JP6281606B2 - SOUND EFFECT ADJUSTING DEVICE AND METHOD, AND PROGRAM - Google Patents

Description

  The present technology relates to a sound effect adjusting device and method, and a program, and more particularly, to a sound effect adjusting device and method, and a program that can provide a user interface that is easier to understand and use.

  For example, a graphic equalizer is known as a typical acoustic effect adjustment for an acoustic signal (see, for example, Patent Document 1).

  In the graphic equalizer, for example, as shown in FIG. 1, the gain (equalizer) of these frequency components is adjusted by raising and lowering the knob of the slide bar corresponding to each frequency component of the acoustic signal.

  That is, the graphic equalizer shown in FIG. 1 is provided with a knob PH11 corresponding to 100 Hz, a knob PH12 corresponding to 500 Hz, and a knob PH13 corresponding to 10 kHz. In the example of FIG. 1, the frequency that can be adjusted is 100 Hz, 500 Hz, and then jumps to 10 kHz, but it does not actually exist between 500 Hz and 10 kHz, and is omitted for the sake of simplicity. ing.

  The knobs PH11 to PH13 are arranged on a scale on which numerical values from “+3” to “−3” are written, and the user operates those knobs to move them to a desired scale. Adjust the gain of the frequency component corresponding to each knob. In this example, the knob PH11 is located on the scale marked “+1”, the knob PH12 is located on the scale marked “−1”, and the knob PH13 is located on the scale marked “+2”. positioned.

  Thereby, the characteristics shown on the right side in the figure are obtained. That is, the gain of each frequency of the acoustic signal is amplified or attenuated by an amount corresponding to the position of the knob. In the drawing, the horizontal axis and the vertical axis on the right side indicate the frequency and the gain of each frequency, respectively. In this example, the gain of 100 Hz and 10 kHz is amplified by the amount corresponding to the positions of the knobs PH11 and PH13, and the gain of 500 Hz is attenuated by the amount corresponding to the position of the knob PH12.

  As described above, adjustment of sound effects such as graphic equalizers is widely and generally performed.

Japanese Patent No. 4691753

  By the way, the graphic equalizer described above is widely known to users who are familiar with audio equipment. Therefore, such a user can conveniently use the graphic equalizer according to the purpose.

  However, users who have little or no opportunity to obtain knowledge about graphic equalizers, such as small children and the elderly, may not be able to immediately understand what functions and effects the graphic equalizer will produce. High nature. Therefore, even a user who is unfamiliar with such a graphic equalizer cannot use the graphic equalizer as expected. In other words, the current graphic equalizer cannot realize universal design.

  As described above, at present, when the acoustic effect adjustment for the acoustic signal (audio signal) such as the equalizer adjustment is performed, it cannot be said that a user interface that is easy to understand and easy to use is realized.

  The present technology has been made in view of such circumstances, and is intended to provide a user interface that is easier to understand and easier to use.

An acoustic effect adjustment device according to an aspect of the present technology displays a control graphic for adjusting the acoustic effect of an acoustic signal, and continuously changes the control graphic according to a user operation on the control graphic. A plurality of acoustic parameters for applying the acoustic effect to the acoustic signal, which are associated with different parts of the display graphic for display and the control graphic, in conjunction with the change of the graphic for control. the by continuously changing, around the listener in the virtual listening space to be reproduced by the acoustic signal, alters the acoustic characteristics of the virtual listening space, or of the virtual listening space reproduced by an acoustic signal And a control unit that changes the position of the listener.

The acoustic effect adjustment device includes a detection unit that detects the user's operation on the control graphic by detecting the user's operation on a touch panel provided to be superimposed on a display unit that displays the control graphic. further provided, wherein the display control unit is continuously changing the control graphic in accordance with a detection result by the detecting unit, continuously said acoustic parameters to the control unit in response to the detection result of the detecting unit it can be made to vary the.

The sound effect adjusting device further includes a detection unit that detects an operation of the user on the control graphic by detecting an operation on the control graphic by a pointer displayed together with the control graphic, and the display the control unit is continuously changing the control graphic according to the detection result by the detection unit, the said control unit so as to continuously change the acoustic parameters in accordance with the detection result of the detecting unit can do.

  The acoustic effect adjusting device includes: an acoustic effect adjusting unit that applies the acoustic effect to the acoustic signal based on the acoustic parameter changed according to the change of the control graphic; and the acoustic effect adjusting unit A reproducing unit that reproduces sound based on the acoustic signal to which the effect has been applied can be further provided.

The acoustic effect can be continuously changed by parametricizing the acoustic parameter .

The acoustic effect adjustment unit is provided with the acoustic signal subjected to a predetermined first acoustic effect and the second acoustic effect different from the predetermined first acoustic effect. The acoustic effect can be continuously changed by crossfading the acoustic signal according to the change of the acoustic parameter.

  The acoustic effect adjusting apparatus may further include a communication unit that transmits a control signal corresponding to the change of the acoustic parameter to an external device that applies the acoustic effect to the acoustic signal.

  In addition to the control graphic, the display control unit can further display another control graphic different from the control graphic.

The display control unit further displays an image reminiscent of the acoustic parameter together with the control graphic, and continuously changes the control graphic and the image according to the user's operation on the control graphic. Can be.

The display control unit may be configured to continuously deform the control graphic in accordance with the user's operation on the control graphic.

  Different acoustic parameters of different types may be associated with the first vertex and the second vertex of the control graphic.

The display control unit can continuously change the color, resolution, or transparency of the control graphic in accordance with the user operation on the control graphic.

The acoustic effect adjustment method or program according to one aspect of the present technology displays a control graphic for adjusting the acoustic effect of an acoustic signal, and continuously displays the control graphic according to a user operation on the control graphic . is changed to, associated with different portions of the control graphic for a plurality of acoustic parameters for applying the sound effects to the acoustic signal, continuously the acoustic parameters in conjunction with the change of the control graphic by causing to vary, the around the listener in the virtual listening space reproduced by the acoustic signal, it alters the acoustic characteristics of the virtual listening space, or listener of virtual listening space where the reproduced by an acoustic signal Changing the position of.

In one aspect of the present technology, a control graphic for adjusting the acoustic effect of the acoustic signal is displayed, and the control graphic is continuously changed according to a user operation on the control graphic, For a plurality of acoustic parameters associated with different parts of the control graphic for applying the acoustic effect to the acoustic signal, the acoustic parameters are continuously changed in conjunction with the change of the control graphic. Thus, the acoustic characteristics of the virtual listening space change around the listener in the virtual listening space reproduced by the acoustic signal, or the position of the listener in the virtual listening space reproduced by the acoustic signal changes. .

  According to one aspect of the present technology, a user interface that is easier to understand and use can be provided.

It is a figure explaining the conventional equalizer adjustment. It is a figure which shows the structural example of a sound effect adjustment apparatus. It is a figure which shows the structural example of a sound effect adjustment part. It is a figure explaining the gain adjustment by the figure for control. It is a flowchart explaining an acoustic effect adjustment process. It is a figure explaining adjustment of Q value by a figure for control. It is a flowchart explaining an acoustic effect adjustment process. It is a figure explaining other examples of gain adjustment by a figure for control. It is a figure explaining other examples of gain adjustment by a figure for control. It is a figure explaining the conventional surround adjustment. It is a figure which shows the structural example of a surround adjustment part. It is a figure which shows the structural example of a transfer function process part. It is a figure which shows the structural example of a transfer function calculating part. It is a figure which shows the other structural example of a transfer function calculating part. It is a figure explaining adjustment of the feeling of depth by a figure for control. It is a figure which shows the structural example of a sound effect adjustment part. It is a flowchart explaining an acoustic effect adjustment process. It is a figure which shows the other structural example of a sound effect adjustment part. It is a figure explaining the adjustment of the feeling of spread by the figure for control. It is a figure explaining adjustment of a feeling of breadth and a feeling of depth by a figure for control. It is a figure explaining adjustment of the breadth of a feeling of front depth by a figure for control. It is a figure explaining adjustment of a listener position by a figure for control. It is a figure explaining adjustment of the center localization component by a figure for control. It is a figure which shows the structural example of a sound effect adjustment part. It is a flowchart explaining an acoustic effect adjustment process. It is a figure explaining the adjustment of the gain by the figure for control, and a feeling of breadth. It is a figure explaining adjustment of the sound effect by the figure for solid control. It is a figure which shows the example of a use environment where the acoustic effect is felt with display device itself. It is a figure which shows the example of a use environment which can feel an acoustic effect with an external apparatus. It is a figure which shows the structural example of a sound effect adjustment apparatus. It is a figure explaining the file reproduction | regeneration according to a touch position. It is a figure explaining the audio | voice reproduction | regeneration according to page turning. It is a figure which shows the structural example of a computer.

  Hereinafter, embodiments to which the present technology is applied will be described with reference to the drawings.

<First Embodiment>
[Configuration example of sound effect adjusting device]
This technology provides an easy-to-understand and easy-to-use user interface when adjusting an acoustic effect such as an equalizer or surround or switching an acoustic effect for an acoustic signal (audio signal) such as a music signal. It is. That is, the present technology realizes a universal design of a user interface for adjusting various sound effects such as a graphic equalizer.

  FIG. 2 is a diagram illustrating a configuration example of an embodiment of an acoustic effect adjustment device to which the present technology is applied.

  2 includes an input unit 21, a display unit 22, a control unit 23, an acquisition unit 24, a sound effect adjustment unit 25, and a reproduction unit 26.

  The input unit 21 includes, for example, a button operated by a user, a touch panel provided so as to be superimposed on the display unit 22, and supplies a signal corresponding to the user operation to the control unit 23. The display unit 22 includes a liquid crystal display, for example, and displays an image supplied from the control unit 23. The display unit 22 is provided with a touch panel that constitutes the input unit 21 in an overlapping manner.

  The control unit 23 controls the overall operation of the sound effect adjusting apparatus 11. The control unit 23 includes a detection unit 31, a setting unit 32, a display control unit 33, and a control signal generation unit 34.

  The detection unit 31 detects a user operation on the touch panel based on a signal supplied from the touch panel as the input unit 21. The setting unit 32 sets the deformation amount of the graphic for adjusting the acoustic effect displayed on the display unit 22 based on the detection result by the detection unit 31.

  The display control unit 33 controls the display of an image on the display unit 22 according to the detection result of the user operation by the detection unit 31 and the like. The control signal generation unit 34 changes the acoustic parameter for adjusting the acoustic effect performed on the acoustic signal based on the detection result by the detection unit 31 and the deformation amount set by the setting unit 32, thereby adjusting the acoustic effect. A control signal for the above processing is generated and supplied to the sound effect adjusting unit 25.

  The acquisition unit 24 acquires an acoustic signal from a recording medium (not shown) or another device connected by wire or wireless and supplies the acoustic signal to the acoustic effect adjustment unit 25.

  The sound effect adjustment unit 25 adjusts the sound effect of the sound signal supplied from the acquisition unit 24 based on the control signal supplied from the control unit 23 and supplies the sound effect to the reproduction unit 26. The reproducing unit 26 is configured by, for example, a speaker and reproduces sound based on the acoustic signal after the acoustic effect adjustment supplied from the acoustic effect adjusting unit 25.

[Example of configuration of sound effect adjustment unit]
In the sound effect adjusting apparatus 11 shown in FIG. 2, sound effect adjustment such as equalizer and surround is performed on the sound signal. First, the case where the equalizer adjustment is performed as the sound effect will be described.

  In such a case, the acoustic effect adjustment unit 25 is configured as shown in FIG. 3, for example. The acoustic effect adjustment unit 25 shown in FIG. 3 is from the gain adjustment unit 61-1 to the gain adjustment unit 61-n (however, the gain adjustment unit 61-3 to the gain adjustment unit 61- (n-1) are not shown). Composed.

  The gain adjustment unit 61-1 adjusts the gain of a predetermined frequency of the acoustic signal SG supplied from the acquisition unit 24 in accordance with the control signal supplied from the control signal generation unit 34, and the acoustic signal obtained as a result thereof SG1 is supplied to the gain adjusting unit 61-2. For example, the gain adjusting unit 61-1 adjusts the 100 Hz gain of the acoustic signal.

  The gain adjustment unit 61-2 adjusts the gain of the predetermined frequency of the acoustic signal SG1 supplied from the gain adjustment unit 61-1 according to the control signal supplied from the control signal generation unit 34, and is obtained as a result. The obtained acoustic signal SG2 is supplied to the gain adjusting unit 61-3. For example, the gain adjustment unit 61-2 adjusts the 500 Hz gain of the acoustic signal.

  Similarly, the gain adjustment unit 61-i (where 3 ≦ i ≦ n−1) is supplied from the gain adjustment unit 61- (i−1) in accordance with the control signal supplied from the control signal generation unit 34. Then, the gain of the predetermined frequency of the acoustic signal SG (i-1) is adjusted, and the resultant acoustic signal SGi is supplied to the gain adjustment unit 61- (i + 1).

  The gain adjusting unit 61-n has a predetermined frequency of the acoustic signal SG (n-1) supplied from the gain adjusting unit 61- (n-1) according to the control signal supplied from the control signal generating unit 34. The gain is adjusted, and the acoustic signal SG ′ obtained as a result is supplied to the reproduction unit 26. For example, the gain adjustment unit 61-n adjusts the 10 kHz gain of the acoustic signal.

  In the following description, when it is not necessary to individually distinguish the gain adjustment unit 61-1 to the gain adjustment unit 61-n, they are also simply referred to as the gain adjustment unit 61.

[Equalizer adjustment]
When the equalizer adjustment is performed as the sound effect adjustment in the sound effect adjustment unit 25 as described above, for example, the control graphic CR11 shown in FIG. 4 is displayed on the display unit 22 as a user interface for the equalizer adjustment.

  The control graphic CR11 is a quadrilateral image having four points A, B, C, and D as vertices, and the control graphic CR11 is linked to the acoustic parameters of the acoustic signal. That is, when the user performs an operation on the control graphic CR11 and continuously deforms the control graphic CR11, the acoustic parameters are continuously changed in conjunction with the deformation.

  Specifically, the point A of the control graphic CR11 is associated with a low frequency of the acoustic signal, for example, a gain of 100 Hz, and the point B of the control graphic CR11 is associated with the high frequency of the acoustic signal, for example, 10 kHz. Are associated with each other. Further, it is assumed that the state of the control graphic CR11 shown in FIG. 4 is completely flat, that is, the equalizer (gain) adjustment amount of each frequency is zero.

  From such a state, it is assumed that the user pinches out the surface of the touch panel as the display unit 22, that is, the input unit 21, with the two fingers of the right hand HD11. That is, it is assumed that the user touches the touch panel with the index finger and thumb of the right hand HD11 and traces the surface of the touch panel so that the index finger and thumb move away from each other in the vertical direction in the figure.

  Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting device 11 moves the point A and the point B of the control graphic CR11 arranged in the vertical direction to the point A ′ and the point B ′ according to the obtained slide amount, and moves the four points A ′, A rectangular control graphic CR11 ′ having points B ′, C, and D as vertices is used. That is, the control graphic CR11 is transformed into the control graphic CR11 '.

  When such an operation is performed on the control graphic CR11, the 100 Hz characteristic of the acoustic signal associated with the point A and the 10 kHz characteristic of the acoustic signal associated with the point B are shown in FIG. It changes as shown on the right side. In FIG. 4, the horizontal axis and the vertical axis on the right side indicate the frequency and the gain of each frequency, respectively. In particular, a curve C11 and a curve C12 indicate a gain around 100 Hz and a gain around 10 kHz of the acoustic signal.

  In the control graphic CR11, since a gain of 100 Hz is assigned to the point A, the movement amount (change amount) from the point A to the point A ′ means the change amount of the 100 Hz equalizer of the acoustic signal. . Therefore, when the point A moves to the point A ′, the 100 Hz characteristic of the acoustic signal changes from A (that is, 0) to A ′ as indicated by the curve C11. That is, in the diagram of point A, the gain of 100 Hz of the acoustic signal is increased or decreased according to the amount of change in the vertical position.

  Further, in the control graphic CR11, since a gain of 10 kHz is assigned to the point B, the movement amount (change amount) from the point B to the point B ′ means the change amount of the 10 kHz equalizer of the acoustic signal. ing. Therefore, when the point B moves to the point B ′, the 10 kHz characteristic of the acoustic signal changes from B (that is, 0) to B ′ as indicated by the curve C12. That is, in the diagram of the point B, the 10 kHz gain of the acoustic signal is increased or decreased according to the amount of change in the vertical position.

  In more detail, as shown by a curve C11 and a curve C12, the gain in a predetermined frequency band centered on 100 Hz or 10 kHz is adjusted. The unit of gain is, for example, dB.

  As described above, the sound effect adjusting device 11 enables the equalizer adjustment by the deformation of the control graphic CR11, not the equalizer adjustment by the slide bar as shown in FIG.

  The equalizer adjustment by the slide bar described with reference to FIG. 1 is logical, and the adjustment amount can be clearly recognized as a numerical value, but as described above, not everyone can understand its meaning and intention. Further, the operation needs to be individually adjusted for each frequency, and it cannot be intuitively understood what kind of adjustment will give the desired sound effect as a whole.

  On the other hand, in the example of FIG. 4, since only two acoustic parameters of low frequency (100 Hz) and high frequency (10 kHz) are limited, changes in the two acoustic parameters are visualized by one control graphic CR11. Can be grasped. Therefore, the user can recognize the relevance of what acoustic effect is obtained by deforming the control graphic CR11 and can perform intuitive operations. Therefore, the user can adjust the characteristic of the acoustic signal to an equalizer characteristic that matches his / her preference without knowing the details of the acoustic parameter.

  Furthermore, in order to make it easier for the user to understand the operation on the control graphic CR11, an image reminiscent of the associated acoustic parameter is displayed in the vicinity of the control graphic CR11. Also good.

  For example, in the example of FIG. 4, the display unit 22 displays a drum image near the point A of the control graphic CR11, displays a hi-hat image near the point B, and further controls these image images. The image is enlarged and reduced in conjunction with the deformation of the figure CR11.

  As a result, the user can more intuitively perform an operation on the control graphic CR11, that is, an equalizer adjustment operation. That is, for example, the user can easily grasp that the operation on the point A is an operation related to the enhancement of the low frequency of the acoustic signal by looking at the image of the drum.

  The image image may be deformed by any method as long as it can image changes in the respective characteristics. Further, while FIG. 4 illustrates an example in which gains are increased for both 100 Hz and 10 kHz, it is of course possible to decrease those gains. Furthermore, gain adjustment of only 100 Hz or only 10 kHz is possible.

[Description of sound effect adjustment processing]
Next, referring to the flowchart of FIG. 5, the acoustic effect adjustment device 11 is a process of performing equalizer adjustment (gain adjustment) on the acoustic signal in response to an operation on the control graphic CR <b> 11 shown in FIG. 4. The adjustment process will be described.

  In step S11, the display control unit 33 supplies the image data of the control graphic CR11 to the display unit 22, and causes the display unit 22 to display the control graphic CR11. Then, the display unit 22 displays the control graphic CR11 based on the image data supplied from the display control unit 33.

  When the control graphic CR11 is displayed on the display unit 22, the user performs an operation on the control graphic CR11. The operation for the control graphic CR11 may be performed on the control graphic CR11, or may be performed in an area near the control graphic CR11.

  When the user performs an operation on the control graphic CR11, the touch panel as the input unit 21 supplies a signal corresponding to the user operation to the control unit 23.

  In step S <b> 12, the detection unit 31 detects a user operation on the touch panel (control graphic CR <b> 11) based on the signal supplied from the input unit 21.

  Specifically, the detection unit 31 detects the touch position of the user on the touch panel, that is, the touch position of the user's finger and the number of touches on the touch panel of the user, that is, the number of fingers touched by the user on the touch panel. Number). Moreover, the detection part 31 detects the moving amount | distance of the user's finger | toe made to contact the touch panel as a sliding amount.

  For example, in the example of FIG. 4, since the user touches the touch panel with the index finger and thumb of the right hand HD11, the number of touches detected by the detection unit 31 is two. In addition, the contact position of the index finger and thumb of the right hand HD11 on the touch panel is detected by the detection unit 31 as a touch position. Further, the movement amount (movement distance) of the index finger of the right hand HD11 on the touch panel and the movement amount of the thumb of the right hand HD11 on the touch panel are detected by the detection unit 31 as the slide amount of each finger.

  In step S <b> 13, the setting unit 32 determines whether the number of touches detected by the detection unit 31 is two. For example, in the example illustrated in FIG. 4, it is determined that the number of touches is two.

  If it is determined in step S13 that the number of touches is 2, in step S14, the setting unit 32 moves the distances of the points A and B of the control graphic CR11 according to the slide amount detected by the detection unit 31. Set.

  Specifically, in the example of FIG. 4, since the slide amount of each finger is detected for each of the index finger and thumb of the right hand HD11, the setting unit 32 selects one of the two slide amounts, for example, Choose the larger of the two slide amounts. Then, the setting unit 32 sets a predetermined distance for the selected slide amount as the movement distance of the points A and B. In this case, the moving distances of point A and point B are the same distance. Here, for example, the movement distance of the point A is a distance between the point A in FIG. 4 and the point A ′ to which the point A is moved.

  Note that the movement distance of the point A and the point B may be determined not only from one of the two slide amounts but also from an average value of the two slide amounts.

  Further, the movement distances of the points A and B may be obtained individually. In such a case, for example, in FIG. 4, the movement distance of the point B is determined based on the slide amount of the index finger whose touch position is on the upper side, and the point A based on the slide amount of the thumb whose touch position is on the lower side. The moving distance is determined.

  In step S15, the display control unit 33 controls the display unit 22 based on the movement distances of the points A and B determined in step S14, and moves the control graphic CR11 in the vertical direction, that is, the points A and B. Deform in the direction of the connecting straight line.

  For example, in the example of FIG. 4, the points A and B are moved by a predetermined moving distance. As a result, point A and point B move to point A 'and point B', respectively, and as a result, the control graphic CR11 is transformed into a control graphic CR11 '.

  When the user's operation on the control graphic CR11 is a pinch-out operation as in the example of FIG. 4, the transformation is performed so that the points A and B move toward the outside of the control graphic CR11. Thus, the control graphic CR11 is enlarged.

  Conversely, the user's operation on the control graphic CR11 is a pinch-in operation, that is, for example, the user brings the index finger and thumb of the right hand HD11 into contact with the touch panel, and the index finger and thumb approach the vertical direction in FIG. Assume that an operation of tracing the surface of the touch panel is performed. In such a case, the point A and the point B are moved closer to each other by a moving distance determined according to the pinch-in operation by the user, and the control graphic CR11 is reduced.

  In step S16, the control signal generator 34 determines a gain according to the deformation of the control graphic CR11.

  For example, in the example of FIG. 4, the control signal generator 34 determines the gain of the 100 Hz equalizer according to the moving distance and moving direction of the point A, and the 10 kHz equalizer according to the moving distance and moving direction of the point B. Determine the gain.

  At this time, when the moving directions of the points A and B are the outward directions of the control graphic CR11, the gains of 100 Hz and 10 kHz of the acoustic signals associated with the points A and B are amplified. On the other hand, when the moving directions of the points A and B are the inner direction of the control graphic CR11, the gains of 100 Hz and 10 kHz of the acoustic signals associated with the points A and B are attenuated. The

  Also, the gain amplification amount or attenuation amount of each frequency associated with the point A or the point B increases continuously as the moving distance of the point increases. It is determined to be.

  The control signal generation unit 34 adjusts the gain of each frequency (equalizer adjustment) based on the positions of the points A ′ and B ′ with respect to the state of the control graphic CR11 that is completely flat, that is, the moving directions and moving distances of the points A and B. When (quantity) is determined, a control signal is generated according to the determined gain. That is, the control signal generation unit 34 generates a control signal indicating the gain of the acoustic signal so as to obtain the determined gain characteristic, and supplies the control signal to each gain adjustment unit 61 of the acoustic effect adjustment unit 25.

  In step S <b> 17, the acoustic effect adjustment unit 25 performs equalizer adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply.

  Specifically, for example, the operation shown in FIG. 4 is performed, and the gain adjustment unit 61-1 and the gain adjustment unit 61-n of the gain adjustment unit 61 perform gain adjustment of 100 Hz and 10 kHz, respectively. .

  In this case, the gain adjustment unit 61-1 performs 100 Hz gain adjustment based on the control signal for the acoustic signal SG supplied from the acquisition unit 24, and the resultant acoustic signal SG1 is used as the gain adjustment unit 61-2. To supply. Also, the gain adjustment unit 61-2 through the gain adjustment unit 61- (n-1) use the acoustic signals supplied from the previous gain adjustment unit 61-1 through the gain adjustment unit 61- (n-2) as they are. The gain adjustment unit 61-3 to the gain adjustment unit 61-n are supplied.

  Further, the gain adjustment unit 61-n performs 10 kHz gain adjustment based on the control signal for the acoustic signal SG (n-1) supplied from the gain adjustment unit 61- (n-1), and the result is obtained. The sound signal SG ′ is supplied to the reproduction unit 26. The reproducing unit 26 reproduces sound based on the acoustic signal SG ′ supplied from the gain adjusting unit 61-n.

  When the gain adjustment of the acoustic signal is performed in this way, the acoustic effect adjustment process ends. Actually, the process of step S15 and the process of step S17 are performed almost simultaneously.

  If it is determined in step S13 that the number of touches is not 2, that is, if the number of touches detected by the detection unit 31 is 1, the process proceeds to step S18.

  In step S18, the setting unit 32 determines whether or not the touch position detected by the detection unit 31 is below the center of the control graphic CR11, that is, the point A side. For example, in FIG. 4, when the touch position by the user is below the straight line connecting the points C and D in the figure, the touch position is determined to be below the center of the control graphic CR11. .

  When it is determined in step S18 that the touch position is below the center of the control graphic CR11, in step S19, the setting unit 32 determines the control graphic according to the slide amount detected by the detection unit 31. The moving distance of the point A of CR11 is set. Specifically, the setting unit 32 sets a predetermined distance for one detected slide amount as the movement distance of the point A.

  In step S20, the display control unit 33 controls the display unit 22 based on the movement distance of the point A determined in step S19, and moves the control graphic CR11 downward, that is, a straight line connecting the point A and the point B. The direction is changed in the direction from point B to point A.

  For example, the control graphic CR11 is transformed into a graphic having points A ′, B, C, and D as vertices. When the user performs an operation to move point A upward in FIG. 4, that is, when the sliding direction of the user's finger is upward in FIG. 4, point A moves upward. The control graphic CR11 is deformed.

  In step S21, the control signal generation unit 34 determines a gain according to the deformation of the control graphic CR11.

  Specifically, the control signal generator 34 determines an equalizer gain of 100 Hz, which is a frequency associated with the point A, according to the moving distance and moving direction of the point A. In step S21, the gain is determined in the same manner as in step S16.

  When the control signal generation unit 34 determines the gain (equalizer adjustment amount) of the frequency associated with the point A, the control signal generation unit 34 generates a control signal according to the determined gain, and each gain adjustment unit 61 of the acoustic effect adjustment unit 25. To supply.

  In step S <b> 22, the acoustic effect adjustment unit 25 performs equalizer adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply. That is, in step S22, the same process as in step S17 is performed. However, in step S22, only the equalizer adjustment (gain adjustment) of the frequency associated with the point A is performed.

  When the sound effect adjustment unit 25 performs the equalizer adjustment of the sound signal, the sound effect adjustment process is completed by supplying the sound signal obtained as a result to the reproduction unit 26. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  Further, when it is determined in step S18 that the touch position is not below the center of the control graphic CR11, that is, the touch position is above the center of the control graphic CR11, the process proceeds to step S23.

  In step S <b> 23, the setting unit 32 sets the movement distance of the point B of the control graphic CR <b> 11 according to the slide amount detected by the detection unit 31. Specifically, the setting unit 32 sets a predetermined distance for one detected slide amount as the movement distance of the point B.

  In step S24, the display control unit 33 controls the display unit 22 based on the movement distance of the point B determined in step S23, and moves the control graphic CR11 upward, that is, a straight line connecting the point A and the point B. The direction is changed in the direction from point A to point B.

  For example, the control graphic CR11 is transformed into a graphic having points A, B ', C and D as vertices. When the user performs an operation to move point B downward in FIG. 4, that is, when the sliding direction of the user's finger is downward in FIG. 4, point B moves downward. Thus, the control graphic CR11 is deformed.

  In step S25, the control signal generator 34 determines a gain corresponding to the deformation of the control graphic CR11.

  Specifically, the control signal generator 34 determines an equalizer gain of 10 kHz, which is a frequency associated with the point B, according to the moving distance and moving direction of the point B. In step S25, the gain is determined in the same manner as in step S16.

  When the control signal generation unit 34 determines the gain (equalizer adjustment amount) of the frequency associated with the point B, the control signal generation unit 34 generates a control signal according to the determined gain, and each gain adjustment unit 61 of the acoustic effect adjustment unit 25. To supply.

  In step S <b> 26, the acoustic effect adjustment unit 25 performs equalizer adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply. That is, in step S26, processing similar to that in step S17 is performed, and the gain of the frequency associated with point B is adjusted.

  When the sound effect adjustment unit 25 performs the equalizer adjustment of the sound signal, the sound effect adjustment process is completed by supplying the sound signal obtained as a result to the reproduction unit 26. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  As described above, the sound effect adjusting device 11 deforms the control graphic CR11 in accordance with the user's operation on the control graphic CR11, and performs equalizer adjustment on the sound signal according to the deformation.

  According to the sound effect adjusting apparatus 11, the control graphic CR11 is deformed by moving the point A and the point B associated with the sound parameters for equalizer adjustment according to the user operation, and at the same time, according to the deformation. By adjusting the sound effect, the user's intuitive operation can be realized. That is, a user interface that is easier to understand and use can be provided to the user. As a result, the user can easily know what acoustic effect can be obtained by deforming the control graphic CR11.

  In this specification, only typical operations for the control graphic CR11 are described, but many other variations of the operation for the control graphic CR11 are conceivable. The present technology can also be applied to the adjustment of the corresponding acoustic effect.

  Further, the example in which the user performs an operation on the control graphic by performing a touch operation or the like on the touch panel as the input unit 21 has been described, but in addition, the user operates the mouse or the like as the input unit 21. An operation on the control graphic may be performed.

  In such a case, for example, the user operates the mouse as the input unit 21 to move the pointer displayed together with the control graphic on the display unit 22 and performs a click operation or a slide operation on the control graphic. Then, the detection unit 31 detects a user's operation on the control graphic based on the signal supplied from the input unit 21, and the display control unit 33 and the control signal generation unit 34 respond to the detection result of the detection unit 31. The control figure is deformed and a control signal is generated.

<Second Embodiment>
[Equalizer adjustment]
Furthermore, in the above description, an example in which gain adjustment at a predetermined frequency is associated with points A and B of the control graphic CR11 has been described. Other acoustic parameters different from the gain may be associated with each other.

  In such a case, for example, as shown in FIG. 6, it is conceivable to associate the Q value (sharpness) of the equalizer as an acoustic parameter with the points C and D. In FIG. 6, the same reference numerals are given to the portions corresponding to those in FIG. 4, and the description thereof is omitted.

  In FIG. 6, a control graphic CR <b> 11 ′ obtained by transforming the control graphic CR <b> 11 is displayed on the display unit 22.

  In the example of FIG. 6 also, a gain of 100 Hz and a gain of 10 kHz are respectively associated with the points A ′ and B ′ of the control graphic CR11 ′, and the control graphic CR11 ′ is 100 Hz from a completely flat state. And the gain of 10kHz has been raised.

  In this example, the point C of the control graphic CR11 'is associated with a Q value of a gain of 100 Hz, and the point D is associated with a Q value of a gain of 10 kHz.

  For example, as shown in FIG. 6, it is assumed that the user pinches out in the horizontal direction with two fingers of the right hand HD11 on the display unit 22 (touch panel). Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting apparatus 11 moves the point C and the point D of the control graphic CR11 ′ arranged in the horizontal direction to the point C ′ and the point D ′ according to the obtained slide amount, and moves the four points A ′. , Point B ′, point C ′, and point D ′ are quadrilateral control figures CR11 ″ having apexes. That is, the control graphic CR11 'is transformed into the control graphic CR11 ".

  Here, a pinch-out operation is performed by the user's right hand HD11 in an area outside the control graphic CR11 ′ on the display unit 22, but the user's operation on the control graphic CR11 ′ is performed by the control graphic CR11. 'Of course it may be done in the inner area.

  When such an operation is performed on the control graphic CR11 ′, the 100 Hz Q value of the acoustic signal associated with the point C and the 10 kHz Q value of the acoustic signal associated with the point D Changes as shown on the right side of the figure. In FIG. 6, the horizontal axis and the vertical axis on the right side indicate the frequency and the gain of each frequency, respectively. In particular, a curve C21 and a curve C22 indicate a gain around 100 Hz and a gain around 10 kHz of the acoustic signal.

  In the control graphic CR11 ′, since the Q value of the gain of 100 Hz is associated with the point C, the movement amount (change amount) from the point C to the point C ′ is the Q value of the 100 Hz equalizer of the acoustic signal. Means the amount of change.

  Therefore, when the point C moves to the point C ′, the gain characteristic of the acoustic signal near 100 Hz changes from the curve C11 to the curve C21. That is, the width (sharpness) in the frequency direction of the curve indicating the gain near 100 Hz of the acoustic signal becomes wider.

  Similarly, in the control graphic CR11 ′, since the Q value of the gain of 10 kHz is associated with the point D, the movement amount from the point D to the point D ′ is the Q value of the 10 kHz equalizer of the acoustic signal. It means the amount of change. Therefore, when the point D moves to the point D ′, the gain characteristic around 10 kHz of the acoustic signal changes from the curve C12 to the curve C22. That is, the width in the frequency direction of the curve indicating the gain around 10 kHz of the acoustic signal becomes wider.

  In this way, when the width of the control graphic CR11 ′ is widened, this corresponds to a decrease in the Q value of the associated frequency and widening of the gain adjustment bandwidth in terms of sound quality. A strong acoustic effect can be obtained.

  The horizontal operation on the control graphic CR11 ′, that is, the operation on the point C and the point D, can be said to be intuitive because the degree of coincidence between the graphic of the control graphic CR11 ′ and the characteristic change of the equalizer is high. . In this way, not only the gain of the equalizer of 100 Hz or 10 kHz but also the adjustment of each Q value can be realized by deforming the same control graphic CR11 ', so that the usability can be improved.

  Further, in order to make it easier for the user to understand the operation on the control graphic CR11 ′, the associated acoustic parameters are recalled in the vicinity of the points C and D of the control graphic CR11 ′. An image to be displayed may be displayed.

  For example, a drum image is displayed in the vicinity of point C, a hi-hat image is displayed in the vicinity of point D, and these image images are enlarged only in the horizontal direction in conjunction with the deformation of the control graphic CR11 ′. Zoom out and display. As a result, the user can more intuitively operate the control graphic CR11 '.

  The image image may be deformed by any method as long as it can image changes in the respective characteristics. However, when a drum or hi-hat image is displayed in the vicinity of the point A 'or the point B', it is necessary to prevent the deformation method of these image images from being the same.

  Specifically, it is assumed that drum image images are displayed in the vicinity of point C and point A ′, and hi-hat image images are displayed in the vicinity of point D and point B ′. In such a case, the size of the image image is changed for the image images arranged in the vicinity of the points A ′ and B ′. For image images arranged in the vicinity of the points C and D, the color density and resolution of the image images are changed. Thereby, a user can be made to grasp | ascertain the difference of an acoustic effect easily.

[Description of sound effect adjustment processing]
As shown in FIG. 6, when a lateral operation is performed on the control graphic, the sound effect adjusting device 11 performs sound effect adjusting processing shown in the flowchart of FIG. 7 to perform equalizer adjustment on the sound signal. Hereinafter, the acoustic effect adjustment processing by the acoustic effect adjustment device 11 will be described with reference to the flowchart of FIG.

  In addition, since the process of step S51 thru | or step S53 is the same as the process of step S11 thru | or step S13 of FIG. 5, the description is abbreviate | omitted. However, in the process of step S51, for example, the control graphic CR11 'shown in FIG. In the following description, the case where the control graphic CR11 'is displayed will be described as an example.

  When it is determined in step S53 that the number of touches is 2, in step S54, the setting unit 32 moves the points C and D of the control graphic CR11 ′ according to the slide amount detected by the detection unit 31. Set the distance. For example, in step S53, processing similar to that in step S14 in FIG. 5 is performed, and the moving distance between point C and point D is set.

  In step S55, the display control unit 33 controls the display unit 22 based on the movement distances of the point C and the point D determined in step S54, and moves the control graphic CR11 ′ in the left-right direction, that is, the point C and the point D. Deform in the direction of a straight line connecting

  For example, in the example of FIG. 6, the point C and the point D are moved by a predetermined moving distance. As a result, the point C and the point D move to the point C ′ and the point D ′, respectively, and as a result, the control graphic CR11 ′ is transformed into the control graphic CR11 ″.

  When the user's operation on the control graphic CR11 ′ is a pinch-out operation as in the example of FIG. 6, the deformation is performed so that the points C and D move toward the outside of the control graphic CR11 ′. As a result, the control graphic CR11 ′ is enlarged. Conversely, when the user performs a pinch-in operation, the point C and the point D are moved closer to each other by a moving distance determined according to the operation, and the control graphic CR11 'is reduced.

  In step S56, the control signal generator 34 determines the Q value of the equalizer according to the deformation of the control graphic CR11 '.

  For example, in the example of FIG. 6, the control signal generation unit 34 determines the Q value of the 100 Hz equalizer according to the moving distance and moving direction of the point C, and the 10 kHz equalizer according to the moving distance and moving direction of the point D. Q value is determined.

  At this time, when the moving direction of the point C and the point D is the outside direction of the control graphic CR11 ′, the Q values of the gains of 100 Hz and 10 kHz of the acoustic signals respectively associated with the point C and the point D are Decrease. On the other hand, when the moving direction of the point C and the point D is the inner direction of the control graphic CR11 ′, the acoustic signals 100 Hz and 10 kHz gain Q corresponding to the points C and D respectively. The value increases.

  Further, the increase or decrease amount of the gain Q value of each frequency associated with the point C or the point D is the absolute value of the increase or decrease amount of the gain Q value as the moving distance of the point becomes longer. The value is determined so as to increase continuously.

  The control signal generation unit 34 determines the Q value of the gain (equalizer) of each frequency based on the positions of the points C ′ and D ′ of the control graphic CR11 ″, that is, the moving direction and moving distance of the points C and D. When determined, a control signal is generated according to the determined Q value. That is, the control signal generation unit 34 generates a control signal indicating the Q value of the acoustic signal so that an equalizer characteristic (gain characteristic) of the determined Q value can be obtained, and each gain adjustment unit of the acoustic effect adjustment unit 25 61 is supplied.

  In step S57, the sound effect adjustment unit 25 performs equalizer adjustment on the sound signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and the sound signal obtained as a result is reproduced by the reproduction unit 26. To supply.

  Specifically, each gain adjustment unit 61 performs gain adjustment on the supplied acoustic signal with the gain and Q value indicated by the control signal. When gain adjustment (equalizer adjustment) is performed on the acoustic signal, the acoustic effect adjustment unit 25 supplies the obtained acoustic signal to the reproduction unit 26. The reproducing unit 26 reproduces sound based on the acoustic signal supplied from the acoustic effect adjusting unit 25. When the equalizer adjustment of the sound signal is performed in this way, the sound effect adjustment process is finished.

  If it is determined in step S53 that the number of touches is not 2, that is, if the number of touches detected by the detection unit 31 is 1, the process proceeds to step S58.

  In step S58, the setting unit 32 determines whether or not the touch position detected by the detection unit 31 is on the left side of the center of the control graphic CR11 ', that is, the point C side. For example, in FIG. 6, when the touch position by the user is on the left side of the line connecting the points A ′ and B ′, it is determined that the touch position is on the left side of the center of the control graphic CR11 ′. The

  When it is determined in step S58 that the touch position is on the left side of the center of the control graphic CR11 ′, in step S59, the setting unit 32 determines the control graphic according to the slide amount detected by the detection unit 31. The moving distance of point C of CR11 ′ is set. Specifically, the setting unit 32 sets a distance determined in advance for one detected slide amount as the movement distance of the point C.

  In step S60, the display control unit 33 controls the display unit 22 based on the moving distance of the point C determined in step S59, and moves the control graphic CR11 ′ in the left direction, that is, the straight line connecting the point C and the point D. In the direction from point D to point C.

  For example, the control graphic CR11 'is transformed into a graphic having points A', B ', C', and D as vertices. Note that when the user performs an operation to move the point C to the right in FIG. 6, that is, when the sliding direction of the user's finger is to the right in FIG. 6, the point C moves to the right. Thus, the control graphic CR11 ′ is deformed.

  In step S61, the control signal generator 34 determines the Q value of the equalizer according to the deformation of the control graphic CR11 '.

  Specifically, the control signal generator 34 determines the Q value of the 100 Hz equalizer associated with the point C according to the moving distance and moving direction of the point C. In step S61, the gain is determined in the same manner as in step S56.

  When the control signal generation unit 34 determines the Q value of the frequency associated with the point C, the control signal generation unit 34 generates a control signal according to the determined Q value and supplies the control signal to each gain adjustment unit 61 of the acoustic effect adjustment unit 25. .

  In step S <b> 62, the acoustic effect adjustment unit 25 performs equalizer adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply. That is, in step S62, the same process as in step S57 is performed.

  When the sound effect adjustment unit 25 performs the equalizer adjustment of the sound signal, the sound effect adjustment process is completed by supplying the sound signal obtained as a result to the reproduction unit 26. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  Furthermore, when it is determined in step S58 that the touch position is not on the left side of the center of the control graphic CR11 ′, that is, the touch position is on the right side of the center of the control graphic CR11 ′, the process proceeds to step S63. .

  In step S63, the setting unit 32 sets the movement distance of the point D of the control graphic CR11 'according to the slide amount detected by the detection unit 31. Specifically, the setting unit 32 sets a predetermined distance for one detected slide amount as the movement distance of the point D.

  In step S64, the display control unit 33 controls the display unit 22 based on the movement distance of the point D determined in step S63, and moves the control graphic CR11 ′ in the right direction, that is, a straight line connecting the point C and the point D. In the direction from point C to point D.

  For example, the control graphic CR11 'is transformed into a graphic having points A', B ', C, and D' as vertices. When the user performs an operation to move the point D to the left in FIG. 6, that is, when the sliding direction of the user's finger is to the left in FIG. 6, the point D moves to the left. Thus, the control graphic CR11 ′ is deformed.

  In step S <b> 65, the control signal generator 34 determines an equalizer Q value according to the deformation of the control graphic CR <b> 11 ′.

  Specifically, the control signal generation unit 34 determines the Q value of the 10 kHz equalizer associated with the point D according to the moving distance and moving direction of the point D. In step S65, the Q value is determined in the same manner as in step S56.

  When the control signal generation unit 34 determines the Q value of the frequency associated with the point D, the control signal generation unit 34 generates a control signal according to the determined Q value and supplies the control signal to each gain adjustment unit 61 of the acoustic effect adjustment unit 25. .

  In step S66, the acoustic effect adjustment unit 25 performs equalizer adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply. That is, in step S66, the same processing as in step S57 is performed, and the gain of the frequency associated with the point D is adjusted.

  When the sound effect adjustment unit 25 performs the equalizer adjustment of the sound signal, the sound effect adjustment process is completed by supplying the sound signal obtained as a result to the reproduction unit 26. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  As described above, the acoustic effect adjusting device 11 deforms the control graphic CR11 ′ according to the lateral operation on the control graphic CR11 ′ by the user, and applies the Q value corresponding to the deformation to the acoustic signal. Perform equalizer adjustment.

  According to the sound effect adjusting apparatus 11, the point C or the point D associated with the sound parameter for equalizer adjustment is moved in accordance with a user operation to deform the control graphic CR11 ′, and at the same time, according to the deformation. By adjusting the sound effect, an intuitive operation by the user can be realized. That is, a user interface that is easier to understand and use can be provided to the user.

  In this specification, only typical operations for changing the Q value for the control graphic CR11 ′ are described, but many other variations of the operation for the control graphic CR11 ′ are conceivable. The present technology can also be applied to adjustment of sound effects corresponding to variations of these operations.

  In addition, the display control unit 33 causes the display unit 22 to display a switching image for changing acoustic parameters associated with the control graphic together with the control graphic CR11 ′, and the user performs an operation on the switching image. The displayed control graphic may be switched. In such a case, for example, when the user touches the switching image in a state where the control graphic CR11 ′ is displayed, the display control unit 33 controls the control graphic CR11 ′ instead of the control graphic CR11 ′ displayed so far. Another control graphic different from the graphic CR11 ′ is displayed. Each vertex of the control graphic is associated with an acoustic parameter for adjusting another acoustic effect different from the equalizer effect, for example.

<Third Embodiment>
[Equalizer adjustment]
Further, from the state of the control graphic CR11 ′ shown in FIG. 4, the user can perform a horizontal operation on the control graphic CR11 ′ to divide the point A ′ and the point B ′ into the other two points. May be.

  In such a case, when a lateral operation is performed on the point A 'of the control graphic CR11', the point A 'is divided into a point A1 and a point A2, for example, as shown in FIG. In FIG. 8, parts corresponding to those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In this example, acoustic parameters are not associated with the points C and D of the control graphic CR11 '. In this example, with the control graphic CR11 'displayed, the user performs a pinch-out operation on the lower area in the figure of the control graphic CR11' with the right hand HD11.

  When such a pinch-out operation is performed, the point A 'of the control graphic CR11' is divided into two points A1 and A2. As a result, the control graphic CR11 'is transformed into a pentagonal control graphic CR12 having the points A1, A2, B', C and D as vertices.

  In the control graphic CR12 obtained by the deformation, a gain of 50 Hz is associated with the point A1, and a gain of 200 Hz is associated with the point A2.

  Further, by dividing the point A ′ into the points A1 and A2, the gain characteristic of the acoustic signal changes as shown on the right side in the figure. In FIG. 8, the horizontal axis and the vertical axis on the right side indicate the frequency and the gain of each frequency, respectively. In particular, a curve C31 and a curve C32 indicate a gain around 50 Hz and a gain around 200 Hz of the acoustic signal.

  In a state where the control graphic CR11 'is displayed, the gain characteristic of 100 Hz associated with the point A' is the characteristic indicated by the curve C11. In this state, the gain at 50 Hz and 200 Hz is zero.

  Thereafter, when the point A ′ is divided into the points A1 and A2, the 100 Hz gain associated with the point A ′ becomes 0, and the 50 Hz associated with the points A1 and A2 obtained by the division and The gain around 200 Hz is as shown by a curve C31 and a curve C32. In this example, the gains of 50 Hz and 200 Hz are the same as the gain of 100 Hz indicated by the curve C11. In this way, by dividing the point A ′ into two points, the points A1 and A2, and changing the gain of the frequency associated with these points, the equalizer characteristics can be finely adjusted.

  When the operation of dividing the point A ′ into the points A1 and A2 is performed as described above, the display control unit 33 displays the divided control graphic CR12 on the display unit 22, and the control signal generation unit 34 displays the point A1. A control signal corresponding to the division of A ′ is generated and supplied to the acoustic effect adjustment unit 25. Then, the acoustic effect adjustment unit 25 adjusts the gain of 50 Hz and 200 Hz of the acoustic signal according to the supplied control signal.

  Although an example in which the point A ′ is divided into the points A1 and A2 has been described here, the point B ′ can be similarly divided into two points B1 and B2. For example, when the division of the point A ′ and the division of the point B ′ are performed, a sliding operation in the horizontal direction by the user is performed in a region above the straight line connecting the point C and the point D in FIG. When done, point B ′ is split. Further, in FIG. 8, when the user performs a sliding operation in the horizontal direction in a region below the straight line connecting the points C and D, the point A ′ is divided.

  Furthermore, the gain frequency associated with the divided points may be changed according to the amount of finger slide such as a pinch-out operation or a pinch-in operation in the lateral direction of the user.

  In addition, when the Q value is associated with the point C or the point D, when the user performs a touch operation in the area inside the control graphic CR11 ′, the Q value associated with the point C or the point D. Is changed, and the point A ′ and the point B ′ may be divided when a touch operation is performed in an area outside the control graphic CR11 ′.

<Variation 1 of the third embodiment>
[Equalizer adjustment]
Further, after the control graphic CR12 of FIG. 8 is displayed, the gain of the frequency associated with the points A1 and A2 is adjusted by the user's operation in the vertical direction with respect to the points A1 and A2. Also good.

  For example, it is assumed that the user has performed an upward sliding operation in the figure with the index finger of the right hand HD11 in the area near the point A2 in a state where the control graphic CR12 is displayed as shown in FIG. 9, parts corresponding to those in FIG. 8 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In FIG. 9, when the user performs a slide operation in an area near the point A2, the point A2 moves in the slide direction by a distance corresponding to the slide amount of the slide operation. In this example, point A2 has moved to point A2 '. As a result, the control graphic CR12 is transformed into a pentagonal control graphic CR12 'having the points A1, A2', B ', C and D as vertices.

  Then, according to the deformation of the control graphic CR12, the 200 Hz gain characteristic of the acoustic signal associated with the point A2 changes as shown on the right side in the figure. In FIG. 9, the horizontal axis and the vertical axis on the right side indicate the frequency and the gain of each frequency, respectively. In particular, a curve C41 indicates a gain around 200 Hz of the acoustic signal.

  That is, when the point A2 moves to the point A2 ′, the gain characteristic around 200 Hz of the acoustic signal changes from the characteristic shown by the curve C32 in FIG. 8 to the characteristic shown by the curve C41 in FIG. Change. In this example, since the point A2 is moving upward in the figure, the gain in the vicinity of 200 Hz is reduced as compared with that before the movement of the point A2.

  As described above, various acoustic parameters related to the equalizer are associated with each vertex of one control graphic, and the acoustic parameters are changed in accordance with the deformation of the control graphic, so that the user is easier to understand and use. An interface can be provided. That is, the user can intuitively adjust the acoustic parameters while watching the change in the shape of the control graphic.

<Fourth embodiment>
[Regarding conventional surround adjustment]
Furthermore, although the case where equalizer adjustment is performed as the adjustment of the sound effect has been described above, surround adjustment of the sound signal may be performed.

  Conventionally, when surround adjustment is performed as sound effect adjustment, for example, as shown in FIG. 10, when the user selects one of several surround modes on the surround selection screen, the selected mode depends on the selected mode. Surround adjustment.

  In FIG. 10, in the figure of the surround selection screen, four selection boxes CK11 to CK14 are arranged in the horizontal direction on the lower side. The user can select one of the selection boxes CK11 to CK14 to select one surround mode. In this example, the selection box CK12 is selected.

  The selection box CK11 is a selection box that is operated when the off mode as the surround mode is selected. In the drawing of the selection box CK11, the character “OFF” is marked on the upper side. The off mode is a mode for turning off the surround effect. When the off mode is selected, the surround effect adjustment for the acoustic signal is not performed.

  The selection box CK12 is a selection box that is operated when the studio mode as the surround mode is selected. In the drawing of the selection box CK12, an image PIC11 that images the sound of the studio mode, that is, a sense of depth and a sense of breadth, is shown above. Is displayed.

  The studio mode is a studio in which a virtual space (hereinafter also referred to as a virtual listening space) in which a user who listens to a reproduced sound signal becomes a listener is small, and the depth and spread of the studio are not so strong. This is a mode in which a surround effect can be obtained.

  Here, the sense of depth refers to the size of the virtual listening space in the depth direction, that is, the spread, as viewed from the user as a listener in the virtual listening space, and the sense of breadth means the user as a listener in the virtual listening space. This refers to the size of the virtual listening space in the horizontal direction.

  The image PIC11 is, for example, an image image indicated by an arrow Q11, and the character “Studio” indicating the studio mode is also displayed on the image PIC11. The image image indicated by the arrow Q11 is an image representing a virtual listening space. In this image image, three sound sources SO11-1 to SO11-3 are arranged in front of the listener AU11.

  For example, the sound source SO11-1 located at the front center of the listener AU11 is a vocal, the sound source SO11-2 located at the front left of the listener AU11 is a base, and the sound source SO11- located at the front right of the listener AU11. 3 is a sax phone. Hereinafter, the sound sources SO11-1 to SO11-3 are also simply referred to as the sound source SO11 when it is not necessary to distinguish them.

  The selection box CK13 is a selection box that is operated when the small hole mode as the surround mode is selected. In the drawing of the selection box CK13, an image PIC12 that gives an image of a sense of depth and spread in the small hole mode is displayed on the upper side. It is displayed.

  In the small hall mode, the virtual listening space is a room that is somewhat large, such as a live house with a capacity of about several tens to several hundred people, and it has a sense of depth and spread according to the virtual listening space. This is a mode in which a surround effect can be obtained.

  The image PIC12 is, for example, an image image indicated by an arrow Q12, and the characters “Small Hall” indicating the small hall mode are also displayed on the image PIC12. The image image shown by the arrow Q12 is an image representing a virtual listening space. In this image image, three sound sources SO11-1 to SO11-3 are arranged in front of the listener AU11, and the listener AU11 A certain size of audience seat is located behind.

  The selection box CK14 is a selection box that is operated when the large hole mode as the surround mode is selected. In the drawing of the selection box CK14, an image PIC13 that gives an image of a sense of depth and spread in the large hole mode is displayed on the upper side. It is displayed.

  In the large hall mode, the virtual listening space is a space as large as a concert venue with thousands to tens of thousands of people, and a surround effect with a sense of depth and spread according to the virtual listening space is obtained. is there.

  The image PIC13 is, for example, an image image indicated by an arrow Q13, and the characters “Large Hall” indicating the large hole mode are also displayed on the image PIC13. The image image indicated by the arrow Q13 is an image representing a virtual listening space. In this image image, three sound sources SO11-1 to SO11-3 are arranged in front of the listener AU11. There is a large auditorium behind.

  As described above, the user selects the selection box corresponding to the desired surround mode while viewing the image PIC11 to the image PIC13 and the like, so that the surround adjustment corresponding to the selected surround mode is performed on the acoustic signal. At this time, by referring to the image PIC11 to the image PIC13, the user can associate the sound obtained by each surround mode, that is, the sense of depth and the sense of spread.

[Configuration of surround adjustment unit]
Here, in the example illustrated in FIG. 10, a configuration of a surround adjustment unit that performs surround adjustment on an acoustic signal according to the selected surround mode will be described.

  For example, the surround adjustment unit is configured as shown in FIG. Since the surround adjustment is to realize the acoustic effect using a difference between channels or the like, it is assumed that acoustic signals of two or more channels are input. In FIG. 11, the path is represented by one line for the sake of simplicity, but actually, acoustic signals of a plurality of channels are transmitted.

  In the surround adjustment unit 91 illustrated in FIG. 11, an acoustic signal to be processed and a control signal corresponding to the surround mode selected by the user are supplied to the switch 101 including the input terminal IPT11 and the output terminals OPT11 to OPT14. Supplied.

  In the switch 101, an acoustic signal and a control signal are supplied to the input terminal IPT11, and the switch 101 connects the input terminal IPT11 and any one of the output terminals OPT11 to OPT14 according to the control signal.

  Specifically, the switch 101 connects the input terminal IPT11 and the output terminal OPT11 when the off mode is selected. In this case, the acoustic signal supplied to the input terminal IPT11 is directly output to the outside via the output terminal OPT11. That is, in this case, surround adjustment for the acoustic signal is not performed.

  The switch 101 connects the input terminal IPT11 and the output terminal OPT12 when the studio mode is selected. In this case, the acoustic signal input to the input terminal IPT11 is supplied to the transfer function processing unit 102 via the output terminal OPT12.

  The transfer function processing unit 102 multiplies the sound signal supplied from the output terminal OPT12 by the transfer function TF1 for realizing the sound in the studio mode, and outputs the resultant sound signal to the outside.

  When the small hall mode is selected, the switch 101 connects the input terminal IPT11 and the output terminal OPT13, and supplies the acoustic signal input to the input terminal IPT11 to the transfer function processing unit 103 via the output terminal OPT13. . The transfer function processing unit 103 multiplies the acoustic signal supplied from the output terminal OPT13 by the transfer function TF2 for realizing the small-hole mode sound, and outputs the resultant acoustic signal to the outside. .

  Further, when the large hole mode is selected, the switch 101 connects the input terminal IPT11 and the output terminal OPT14, and the acoustic signal input to the input terminal IPT11 is transferred to the transfer function processing unit 104 via the output terminal OPT14. Supply. The transfer function processing unit 104 multiplies the acoustic signal supplied from the output terminal OPT14 by the transfer function TF3 for realizing large hall mode acoustics, and outputs the resulting acoustic signal to the outside. .

[Configuration of transfer function processor]
Further, the transfer function processing unit 102 in FIG. 11 is configured as shown in FIG. 12, for example. In this example, for example, a left channel acoustic signal SL and a right channel acoustic signal SR are input as acoustic signals. Here, the left channel is a channel of an acoustic signal output from the left speaker toward the user's left ear, and the right channel is an acoustic signal channel output from the right speaker toward the user's right ear. .

  The transfer function processing unit 102 includes transfer function calculation units 131 to 134, an addition unit 135, and an addition unit 136. In this example, the left channel acoustic signal SL is supplied to the transfer function calculator 131 and the transfer function calculator 132, and the right channel acoustic signal SR is supplied to the transfer function calculator 133 and the transfer function calculator 134. .

  The transfer function calculation unit 131 multiplies the supplied left channel acoustic signal SL by the transfer function TF1LL from the left speaker to the user's left ear, and the resulting acoustic signal SLL is added to the addition unit 135. Supply. The transfer function calculation unit 132 multiplies the supplied left channel acoustic signal SL by the transfer function TF1LR from the left speaker to the user's right ear, and adds the obtained acoustic signal SLR to the addition unit. 136.

  The transfer function calculation unit 133 multiplies the supplied right channel acoustic signal SR by the transfer function TF1RL from the right speaker to the user's left ear, and the resulting acoustic signal SRL is added to the addition unit 135. Supply. The transfer function calculation unit 134 multiplies the supplied right channel acoustic signal SR by the transfer function TF1RR from the right speaker to the user's right ear, and sends the obtained acoustic signal SRR to the addition unit 136. Supply.

  The adder 135 adds the acoustic signal SLL supplied from the transfer function calculator 131 and the acoustic signal SRL supplied from the transfer function calculator 133, and the acoustic signal SL, which is a left channel signal after surround adjustment. 'And output to the outside.

  Similarly, the addition unit 136 adds the acoustic signal SLR supplied from the transfer function calculation unit 132 and the acoustic signal SRR supplied from the transfer function calculation unit 134, and is a right channel signal after surround adjustment. The sound signal SR ′ is output to the outside.

  As described above, normally, the acoustic signal SL and the acoustic signal SR reproduced as they are are multiplied by the spatial characteristics to obtain the acoustic signal SL ′ and the acoustic signal SR ′. A sense of spread can be felt for the user.

  Although the configuration example of the transfer function processing unit 102 has been described here, the configuration of the transfer function processing unit 103 and the transfer function processing unit 104 in FIG. To do.

[Configuration of transfer function calculation unit]
Furthermore, the transfer function calculation unit 131 shown in FIG. 12 is configured as shown in FIG. 13, for example. That is, in this example, the calculation by the transfer function TF1LL is realized by impulse response convolution.

  In FIG. 13, the transfer function calculation unit 131 includes an input buffer 161, a coefficient holding unit 162, a multiplication unit 163, and an addition unit 164, and the acoustic signal SL is supplied to the input buffer 161.

  The input buffer 161 includes x buffers w1 to wx, and values of each of x consecutive samples of the acoustic signal SL are stored in each of the buffers w1 to wx. That is, the newest sample of the acoustic signal SL is stored in the buffer w1, and the oldest sample of the acoustic signal SL is stored in the buffer wx. Each time a new sample of the acoustic signal SL is supplied to the input buffer 161, the sample stored in the buffer wi (where 1 ≦ i ≦ x−1) is stored in the buffer w (i + 1). The samples that have been stored in the buffer wx so far are discarded.

  The input buffer 161 supplies the value of the sample of the acoustic signal SL stored in each buffer to the multiplier 163.

  The coefficient holding unit 162 holds x coefficients e1 to ex that are entities of the transfer function TF1LL, and supplies these coefficients to the multiplication unit 163.

  The multiplication unit 163 includes x multipliers, multiplies the acoustic signal SL from the input buffer 161 by the coefficient from the coefficient holding unit 162, and supplies the result to the addition unit 164. That is, the value of the sample stored in the buffer wi (where 1 ≦ i ≦ x) is multiplied by the coefficient ei (where 1 ≦ i ≦ x) and supplied to the adder 164.

  The adding unit 164 obtains the sum of the values of the samples of the acoustic signal SL supplied from the multiplying unit 163 and multiplied by the coefficient ei (where 1 ≦ i ≦ x), and obtains the obtained value of the acoustic signal SLL. The value of one sample is output to the adding unit 135.

  As described above, in the transfer function calculation unit 131 illustrated in FIG. 13, the acoustic signal SLL is generated by the convolution calculation using x coefficients for the acoustic signal SL. In this method, since the coefficients e1 to ex are obtained by actual measurement, the reproducibility of the spatial characteristics can be improved. However, since the number of buffers and coefficients constituting the input buffer 161 is increased, the circuit scale and the calculation amount are increased.

  Although the configuration example of the transfer function calculation unit 131 has been described here, the configuration of the transfer function calculation unit 132 to the transfer function calculation unit 134 in FIG. To do.

[Other configuration of transfer function calculation unit]
Further, the transfer function calculation unit 131 illustrated in FIG. 12 may be configured, for example, as illustrated in FIG. In FIG. 14, portions corresponding to those in FIG. 13 are denoted by the same reference numerals, and description thereof is omitted.

  14 includes an input buffer 161, a coefficient holding unit 191-1, a coefficient holding unit 191-2, a multiplying unit 192, and an adding unit 164, and an acoustic signal SL is supplied to the input buffer 161. Is done. In this example, the input buffer 161 includes buffers w1 to wy (where x <y).

  The coefficient holding unit 191-1 holds a coefficient e1 for realizing the primary reflected sound, and supplies the coefficient e1 to the multiplication unit 192. The coefficient holding unit 191-2 holds a coefficient e2 for realizing the secondary reflected sound, and supplies the coefficient e2 to the multiplication unit 192. Hereinafter, the coefficient holding unit 191-1 and the coefficient holding unit 191-2 are also simply referred to as a coefficient holding unit 191 when it is not necessary to distinguish between them.

  The multiplication unit 192 multiplies the sample value of the acoustic signal SL supplied from the buffer wx of the input buffer 161 by the coefficient e1 supplied from the coefficient holding unit 191-1, and at the same time, the acoustic signal SL supplied from the buffer wy. Is multiplied by the coefficient e2 supplied from the coefficient holding unit 191-2. Then, the multiplying unit 192 supplies the value of the sample of the acoustic signal SL multiplied by these coefficients to the adding unit 164. The adder 164 obtains the sum of the values of each sample of the acoustic signal SL multiplied by the coefficient supplied from the multiplier 192 and supplies the obtained value to the adder 135 as the value of one sample of the acoustic signal SLL. Output.

  In this example, the sample stored in the buffer wx is multiplied by the coefficient e1 to generate a primary reflected sound, and further, the sample stored in the buffer wy is multiplied by the coefficient e2 in order to realize a reflection delay. As a result, a secondary reflected sound is generated. Then, the primary reflected sound and the secondary reflected sound are added to generate an acoustic signal SLL.

  Compared with the method shown in FIG. 13, this method can reduce the circuit scale and the amount of calculation because the coefficients can be reduced, but it is difficult to reproduce the detailed characteristics of the actual space. However, by keeping the buffer large, the position of each reflected sound can be moved to an arbitrary delay position, and the coefficient can also take an arbitrary value, so that it is possible to create a spatial characteristic that does not actually exist. In addition to the primary reflection sound and the secondary reflection sound, the reflection sound may be increased to a tertiary reflection sound and a quaternary reflection sound as the system allows.

[Surround adjustment using this technology]
By the way, in the surround adjustment described above, the user can only select one desired surround mode from among a number of surround modes prepared in advance. For this reason, the acoustic effect desired by the user cannot always be obtained by the surround adjustment.

  Therefore, in the present technology, for example, as illustrated in FIG. 15, the control graphic is displayed on the display unit 22 of the sound effect adjusting device 11 so that the sound parameters of the surround effect can be continuously adjusted.

  In FIG. 15, a control graphic CR21 is displayed on the display unit 22 as a user interface for sound effect adjustment, that is, surround adjustment.

  The control graphic CR21 is a quadrilateral image having four points E, F, G, and H as vertices, and the control graphic CR21 is linked with acoustic parameters relating to the surround effect of the acoustic signal. . That is, when the user performs an operation on the control graphic CR21 and continuously deforms the control graphic CR21, the acoustic parameters are also continuously changed along with the deformation.

  For example, acoustic parameters related to the surround effect include a sense of depth and a sense of spread of the acoustic signal. In this example, the sense of depth is associated with the points E and F of the control graphic CR21. More specifically, point E is associated with a sense of depth in the space behind the user (listener) in the virtual listening space, and point F is viewed from the user (listener) in the virtual listening space. A sense of depth in the front space is associated.

  Further, it is assumed that the state of the control graphic CR21 shown in FIG. 15 is a reference state, that is, a state without surround effect (no acoustic effect). When the state of the control graphic CR21 is a reference state, the virtual listening space VS11 shown on the right side in the drawing is reproduced by, for example, an acoustic signal. In FIG. 15, parts corresponding to those in FIG. 10 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In the virtual listening space VS11, three sound sources SO11-1 to SO11-3 are arranged in front of the listener AU11. Even in a state where there is no surround effect on the sound signal, if the sound signal is a stereo signal or the like, the user feels a sense of depth or a sense of breadth to some extent, so that a space feeling like the virtual listening space VS11 can be obtained.

  From such a state, it is assumed that the user pinches out the surface of the display unit 22, that is, the touch panel as the input unit 21, with the two fingers of the left hand HD12 in the vertical direction. Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the acoustic effect adjusting device 11 moves the point E and the point F of the control graphic CR21 arranged in the vertical direction to the point E ′ and the point F ′ according to the obtained slide amount, and moves the four points E ′, It is assumed that the control graphic CR21 ′ is a quadrangle having points F ′, G and H as vertices. That is, the control graphic CR21 is transformed into the control graphic CR21 '.

  When such an operation is performed on the control graphic CR21, the characteristic of the sense of depth behind that is associated with the point E and the characteristic of the sense of depth behind that are associated with the point F are shown in FIG. It changes as shown in the right virtual listening space VS12. That is, the virtual listening space VS12 is a space in which the front and rear directions of the listener AU11 are wider than the virtual listening space VS11.

  In the virtual listening space VS12, the depths of the front and rear of the listener AU11 are larger, and accordingly, the sound sources SO11 are moved to the far rear side away from the listener AU11. In addition, the audience seats of other listeners are provided behind the listener AU11 in accordance with the extent of the rear space.

  The movement of the point E to the point E ′ in the control graphic CR21 means a change in the sense of depth behind the virtual listening space that is felt by the listener who was listening to the sound without the surround effect. Accordingly, the sense of depth behind the virtual listening space VS11 changes. Similarly, the movement of the point F to the point F ′ in the control graphic CR21 means a change in the sense of depth in front of the virtual listening space that is felt by the listener who was listening to the sound without the surround effect. The sense of depth in front of the virtual listening space VS11 changes according to the amount of change.

  That is, in conjunction with the fact that the control graphic CR21 is expanded in the front-rear direction to the control graphic CR21 ′, the depth feeling (surround effect) of the virtual listening space is also expanded back and forth around the listener AU11. Become.

  As described above, the sound effect adjusting device 11 enables surround adjustment by deformation of the control graphic CR21 instead of surround adjustment by a selection box as shown in FIG.

  The adjustment of the surround effect by the conventional selection box is easy to understand intuitively by displaying an image of the surround mode. However, in this method, the surround effect can be obtained only by a preset selected according to the selection box. For this reason, for example, even if the user wants to set a sense of depth and spaciousness of a medium hall, which is a space between a small hall and a large hall, such a setting cannot be made.

  On the other hand, according to the present technology, it is possible to continuously adjust changes in two acoustic parameters, that is, a sense of depth in the front and rear of the virtual listening space, with a single control graphic. In addition, it is possible for the user to highly recognize the relevance of what surround effect can be obtained by deforming the control graphic, and intuitive and continuous operations can be performed. Thereby, the user can enjoy a wider surround effect than the adjustment of the surround effect by a simple selection box.

[Example of configuration of sound effect adjustment unit]
Next, the configuration of the sound effect adjusting unit 25 of the sound effect adjusting device 11 when the surround effect is adjusted by an operation on the control graphic CR21 shown in FIG. In such a case, the acoustic effect adjustment unit 25 is configured as shown in FIG. 16, for example. In FIG. 16, the same reference numerals are given to the portions corresponding to those in FIG.

  The acoustic effect adjustment unit 25 illustrated in FIG. 16 includes a transfer function calculation unit 131, a transfer function calculation unit 221, a multiplication unit 222, a multiplication unit 223, and an addition unit 224. The acoustic signal output from the acquisition unit 24 is This is supplied to the transfer function calculator 131 and the transfer function calculator 221.

  The transfer function calculation unit 131 performs a convolution operation using the retained coefficients e1 to ex on the supplied acoustic signal, and supplies the resultant acoustic signal to the multiplication unit 222.

  The transfer function calculation unit 221 performs a convolution calculation using the held coefficients f1 to fx on the supplied acoustic signal, and supplies the resultant acoustic signal to the multiplication unit 223.

  The transfer function calculation unit 221 has the same configuration as that of the transfer function calculation unit 131. The input buffer 231, the coefficient holding unit 232, the multiplication unit 233, and the addition unit 234 that constitute the transfer function calculation unit 221 are respectively This corresponds to the input buffer 161 to the adding unit 164.

  That is, the input buffer 231 includes x buffers w1 to wx, and each buffer stores values of x consecutive samples of the acoustic signal. Then, the input buffer 231 supplies the sample value of the acoustic signal stored in each buffer to the multiplier 233.

  The coefficient holding unit 232 holds x coefficients f1 to fx that are entities of the transfer function, and supplies these coefficients to the multiplication unit 233. The multiplication unit 233 multiplies the acoustic signal from the input buffer 231 by the coefficient from the coefficient holding unit 232 and supplies the result to the addition unit 234. That is, the value of the sample stored in the buffer wi (where 1 ≦ i ≦ x) is multiplied by the coefficient fi (where 1 ≦ i ≦ x) and supplied to the adder 234.

  The adder 234 obtains the sum of the values of each sample of the acoustic signal supplied from the multiplier 233 and multiplied by the coefficient, and outputs the obtained value to the multiplier 223 as the value of one sample of the acoustic signal. .

  Here, the transfer function of the transfer function calculation unit 131 shows a sense of depth in a predetermined space SPA, and the transfer function of the transfer function calculation unit 221 shows a sense of depth in a space SPB different from the space SPA. In the control graphic CR21 of FIG. 15, the sense of depth in the virtual listening space changes in accordance with the deformation of the control graphic CR21. The change in the sense of depth is due to the transfer function of the transfer function calculation unit 131 and the transfer function calculation unit 221. This can be realized by switching between the transfer function. That is, it can be realized by switching whether the transfer function calculation unit 131 performs surround adjustment of the acoustic signal or the transfer function calculation unit 221 performs surround adjustment of the acoustic signal.

  However, when these transfer functions are switched suddenly or discontinuously, the sense of depth of the virtual listening space does not change continuously, so that the change image of the control graphic CR21 does not match the sense of depth. Therefore, in the acoustic effect adjustment unit 25, a multiplication unit 222 and a multiplication unit 223 having variable coefficients are introduced.

  The multiplier 222 continuously changes the variable coefficient g1 in accordance with the control signal supplied from the control signal generator 34, multiplies the acoustic signal supplied from the transfer function calculator 131 by the variable coefficient g1, and adds To the unit 224. Similarly, the multiplication unit 223 continuously changes the variable coefficient g2 according to the control signal supplied from the control signal generation unit 34, and multiplies the acoustic signal supplied from the transfer function calculation unit 221 by the variable coefficient g2. To the adder 224.

  The addition unit 224 adds the acoustic signal supplied from the multiplication unit 222 and the acoustic signal supplied from the multiplication unit 223 to obtain an acoustic signal in which the surround effect is adjusted, and supplies the acoustic signal to the reproduction unit 26. That is, the acoustic signal to which a predetermined acoustic effect (surround effect) is applied in the transfer function calculation unit 131 and the acoustic effect of the transfer function calculation unit 131 in the transfer function calculation unit 221 are different from the predetermined one. The adder 224 crossfades the sound signal to which another sound effect has been applied.

  In other words, the acoustic effect adjustment unit 25 has a plurality of discontinuous settings in advance as the transfer function settings, and changes the acoustic effect (surround effect) from one state to another state. By continuously fading the state settings of the plurality of transfer functions, a continuous change in the acoustic effect is realized.

  In this way, by continuously changing the variable coefficient g1 and the variable coefficient g2 by the control signal, the sense of depth of the virtual listening space can be continuously changed, and the image and depth of the change of the control graphic CR21 can be changed. The degree of coincidence with the change in feeling can be further increased. Thereby, the user can perform a more intuitive and easy-to-understand operation.

  In addition, when there are a plurality of channels of acoustic signals acquired by the acquisition unit 24, a configuration including the transfer function calculation unit 131 to the addition unit 224 may be provided for each channel of the acoustic signal.

[Description of sound effect adjustment processing]
Furthermore, with reference to the flowchart of FIG. 17, the acoustic effect adjustment process performed by the acoustic effect adjusting device 11 when the acoustic effect adjusting unit 25 of the acoustic effect adjusting device 11 has the configuration shown in FIG. .

  In addition, since the process of step S91 thru | or step S93 is the same as the process of FIG.5 S11 thru | or step S13, the description is abbreviate | omitted. However, in the process of step S91, for example, the control graphic CR21 shown in FIG. In the following, description will be continued by taking as an example the case where the control graphic CR21 is displayed.

  When it is determined in step S93 that the number of touches is 2, in step S94, the setting unit 32 moves the distances of the points E and F of the control graphic CR21 according to the slide amount detected by the detection unit 31. Set. For example, in step S94, processing similar to that in step S14 in FIG. 5 is performed to set the movement distance between points E and F.

  In step S95, the display control unit 33 controls the display unit 22 based on the movement distances of the points E and F determined in step S94, and moves the control graphic CR21 in the vertical direction, that is, the points E and F. Deform in the direction of the connecting straight line.

  For example, in the example of FIG. 15, the points E and F are moved by a predetermined moving distance. As a result, the point E and the point F move to the point E ′ and the point F ′, respectively, and as a result, the control graphic CR21 is deformed to become the control graphic CR21 ′.

  When the user's operation on the control graphic CR21 is a pinch-out operation as in the example of FIG. 15, the transformation is performed so that the points E and F move toward the outside of the control graphic CR21. Thus, the control graphic CR21 is enlarged. Conversely, when the user performs a pinch-in operation, the point E and the point F are moved closer to each other by a movement distance determined according to the operation, and the control graphic CR21 is reduced.

  In step S <b> 96, the control signal generation unit 34 determines a sense of depth in front and rear of the virtual listening space according to the deformation of the control graphic CR <b> 21.

  For example, in the example of FIG. 15, the control signal generation unit 34 determines the sense of depth behind the virtual listening space according to the moving distance and moving direction of the point E, and also according to the moving distance and moving direction of the point F. Determine the depth feeling in front of the virtual listening space.

  At this time, when the moving direction of the point E and the point F is the outside direction of the control graphic CR21, the surround effect is enhanced so that the sense of depth in the back and front associated with the point E and the point F is expanded. Adjustments are made. On the other hand, when the moving direction of the point E and the point F is the inner side direction of the control graphic CR21, the surround effect is adjusted so that the sense of depth in the rear and front is narrowed.

  Further, the change amount of the sense of depth associated with the point E or the point F is determined so that the absolute value of the change amount of the sense of depth continuously increases as the moving distance of the point increases. .

  Based on the positions of the points E ′ and F ′ of the control graphic CR21 ′, that is, the moving directions and moving distances of the points E and F, the control signal generating unit 34 provides a sense of depth behind and in the virtual listening space. When the determination is made, a control signal is generated according to the determined sense of depth, and is supplied to the multiplication unit 222 and the multiplication unit 223 of the sound effect adjustment unit 25.

  In step S97, the acoustic effect adjustment unit 25 performs surround adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and the acoustic signal obtained as a result is reproduced by the reproduction unit 26. To supply.

  Specifically, the transfer function calculation unit 131 and the transfer function calculation unit 221 perform a convolution calculation using a coefficient on the acoustic signal supplied from the acquisition unit 24, and multiply the resultant acoustic signal by the multiplication. To the unit 222 and the multiplication unit 223.

  The multiplier 222 and the multiplier 223 change the variable coefficient g1 and the variable coefficient g2 according to the control signal from the control signal generator 34, and multiply the acoustic signals from the transfer function calculator 131 and the transfer function calculator 221. Then, the acoustic signal obtained as a result is supplied to the adder 224. The addition unit 224 adds the acoustic signal from the multiplication unit 222 and the acoustic signal from the multiplication unit 223 and supplies the result to the reproduction unit 26.

  Furthermore, the reproducing unit 26 reproduces sound based on the acoustic signal supplied from the acoustic effect adjusting unit 25. When the surround adjustment of the sound signal is performed in this way, the sound effect adjustment process is finished.

  If it is determined in step S93 that the number of touches is not 2, that is, if the number of touches detected by the detection unit 31 is 1, the process proceeds to step S98.

  In step S98, the setting unit 32 determines whether or not the touch position detected by the detection unit 31 is below the center of the control graphic CR21, that is, the point E side.

  When it is determined in step S98 that the touch position is below the center of the control graphic CR21, in step S99, the setting unit 32 determines the control graphic according to the slide amount detected by the detection unit 31. The moving distance of point E of CR21 is set.

  In step S100, the display control unit 33 controls the display unit 22 based on the movement distance of the point E determined in step S99, and moves the control graphic CR21 downward, that is, a straight line connecting the point E and the point F. The direction is changed in the direction from point F to point E.

  For example, the control graphic CR21 of FIG. 15 is transformed into a graphic having points E ′, F, G, and H as vertices. When the user performs an operation of moving the point E upward in FIG. 15, the control graphic CR21 is deformed so that the point E moves upward.

  In step S101, the control signal generation unit 34 determines the sense of depth behind the virtual listening space according to the deformation of the control graphic CR21. Specifically, the control signal generation unit 34 determines a sense of depth behind the virtual listening space associated with the point E according to the moving distance and moving direction of the point E.

  When the control signal generation unit 34 determines the sense of depth associated with the point E, the control signal generation unit 34 generates a control signal according to the determined sense of depth and supplies the control signal to the multiplication unit 222 and the multiplication unit 223 of the acoustic effect adjustment unit 25. .

  In step S102, the acoustic effect adjustment unit 25 performs surround adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and the acoustic signal obtained as a result is reproduced by the reproduction unit 26. To supply. That is, in step S102, the same process as in step S97 is performed.

  When the sound effect adjusting unit 25 performs the surround adjustment of the sound signal, the sound signal obtained as a result is supplied to the reproducing unit 26, and the sound effect adjusting process ends. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  Furthermore, when it is determined in step S98 that the touch position is not below the center of the control graphic CR21, that is, the touch position is above the center of the control graphic CR21, the process proceeds to step S103.

  In step S <b> 103, the setting unit 32 sets the movement distance of the point F of the control graphic CR <b> 21 according to the slide amount detected by the detection unit 31. Specifically, the setting unit 32 sets a predetermined distance for one detected slide amount as the movement distance of the point F.

  In step S104, the display control unit 33 controls the display unit 22 based on the moving distance of the point F determined in step S103, and deforms the control graphic CR21 upward.

  For example, the control graphic CR21 of FIG. 15 is transformed into a graphic having points E, F ', G, and H as vertices. When the user performs an operation of moving the point F downward in FIG. 15, the control graphic CR21 is deformed so that the point F moves downward.

  In step S <b> 105, the control signal generation unit 34 determines a sense of depth ahead of the virtual listening space according to the deformation of the control graphic CR <b> 21. Specifically, the control signal generation unit 34 determines a forward depth feeling associated with the point F according to the moving distance and moving direction of the point F.

  When the control signal generation unit 34 determines the forward depth sensation associated with the point F, the control signal generation unit 34 generates a control signal according to the determined depth sensation, and sends the control signal to the multiplication unit 222 and the multiplication unit 223 of the acoustic effect adjustment unit 25. Supply.

  In step S <b> 106, the acoustic effect adjustment unit 25 performs surround adjustment on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and reproduces the acoustic signal obtained as a result thereof. To supply. That is, in step S106, the same processing as in step S97 is performed, and the sense of depth (surround) associated with the point F is adjusted.

  When the sound effect adjusting unit 25 performs the surround adjustment of the sound signal, the sound signal obtained as a result is supplied to the reproducing unit 26, and the sound effect adjusting process ends. In the reproduction unit 26, sound is reproduced based on the acoustic signal supplied from the acoustic effect adjustment unit 25.

  As described above, the sound effect adjusting apparatus 11 deforms the control graphic CR21 in accordance with the user's operation on the control graphic CR21 and performs surround adjustment on the sound signal with a sense of depth according to the deformation.

  According to the sound effect adjusting device 11, the point associated with the sound parameter for surround adjustment is moved according to the user operation to deform the control graphic CR21, and at the same time, the sound effect is adjusted according to the deformation. By doing so, an intuitive operation of the user can be realized. That is, a user interface that is easier to understand and use can be provided to the user.

  In this specification, only representative operations for changing the sense of depth with respect to the control graphic CR21 are described, but many other variations of the operation with respect to the control graphic CR21 can be considered. The present technology can also be applied to adjustment of sound effects corresponding to operation variations.

<Variation 1 of the fourth embodiment>
[Another configuration example of the sound effect adjustment unit]
In the above description, an example in which two transfer function calculation units are provided in the acoustic effect adjustment unit 25 has been described. However, a single transfer function calculation unit may continuously change the depth of the virtual listening space. Good.

  In such a case, the acoustic effect adjustment unit 25 is configured as shown in FIG. 18, for example.

  The acoustic effect adjustment unit 25 illustrated in FIG. 18 includes an input buffer 261, a coefficient holding unit 262, a coefficient holding unit 263, a multiplication unit 264, and an addition unit 265, and an acoustic signal is supplied to the input buffer 261.

  The input buffer 261 corresponds to the input buffer 161 in FIG. 16, holds the supplied acoustic signal, and supplies values of some of the samples to the multiplier 264. Here, the input buffer 261 has z buffers, buffers w1 to wz, and the sample values of the acoustic signal are stored in the buffers w1 to wz in order from the newest.

  The coefficient holding unit 262 changes the coefficient e1 for realizing the primary reflected sound according to the control signal CV from the control signal generation unit 34, and supplies the coefficient e1 to the multiplication unit 264. The coefficient holding unit 263 changes the coefficient e2 for realizing the secondary reflected sound in accordance with the control signal CV from the control signal generation unit 34, and supplies the coefficient e2 to the multiplication unit 264.

  The multiplication unit 264 includes two multipliers, and among the buffers constituting the input buffer 261, the coefficient is added to the value of the acoustic signal sample stored in the buffer determined by the control signal CP from the control signal generation unit 34. The coefficients from the holding unit 262 and the coefficient holding unit 263 are multiplied and supplied to the adding unit 265.

  That is, the multiplying unit 264 multiplies the value of the sample stored in the buffer wx determined by the control signal CP (where 1 ≦ x ≦ z) by the coefficient e1 and the buffer wy determined by the control signal CP (where The value of the sample stored in 1 ≦ y ≦ z) is multiplied by a coefficient e2. The positions of the buffer wx and the buffer wy are determined by a control signal CP so as to realize a reflection delay. That is, the positions of the buffer wx and the buffer wy change according to the control signal CP.

  The adder 265 obtains the sum of the values of each sample of the acoustic signal supplied from the multiplier 264 and multiplied by the coefficient, and uses the obtained value as the value of one sample of the acoustic signal after the surround adjustment. 26.

  When there are a plurality of channels of acoustic signals acquired by the acquiring unit 24, the same configuration as that of the input buffer 261 to the adding unit 265 may be provided for each channel of the acoustic signals.

  As described above, the acoustic effect adjusting unit 25 shown in FIG. 18 can arbitrarily change the delay of the acoustic signal, that is, the position of the buffer wx and the buffer wy, and the coefficient e1 and the coefficient e2. By doing so, the sense of depth can be continuously changed. Thereby, the degree of coincidence between the deformation image of the control graphic CR21 and the change in the surround effect can be further increased.

  In other words, the configuration of FIG. 18 is a configuration in which the acoustic effect is continuously changed by parametricizing the acoustic parameters. That is, the acoustic effect adjustment unit 25 illustrated in FIG. 18 is an example in which the transmission function calculation unit 131 illustrated in FIGS. 13 and 14 is parametrically converted. In this example, only a dominant element component (here, primary reflected sound and secondary reflected sound) is extracted as a coefficient to be multiplied by the acoustic signal, and the element component is not a fixed value but a parameter (variable value). It is used as.

  Even when the sound effect adjusting unit 25 is configured as shown in FIG. 18, the same process as the sound effect adjusting process shown in FIG. 17 is performed. However, in such a case, the control signal generation unit 34 generates the control signal CV and the control signal CP according to the deformation of the control graphic CR21, the coefficient holding unit 262, the coefficient holding unit 263, the multiplication unit 264, To supply.

<Modification 2 of the fourth embodiment>
[Adjustment of feeling of spread]
In the example illustrated in FIG. 15, the case has been described in which a sense of depth is associated with the control graphic CR21. However, a sense of spread may be associated with the control graphic CR21. It should be noted that the adjustment of the feeling of spread can be realized by changing the coefficient of the transfer function calculation unit, as in the case of the feeling of depth basically described above. Whether the sense of depth or the sense of breadth can be changed is not determined by the coefficient of one channel. For example, in the case of the transfer function processing unit 102, the combination of coefficients of all four transfer function calculation units. It is determined. By properly considering the combination of the four coefficients, both the sense of depth and the sense of spread can be adjusted. Since this effect is generally well known, its description is omitted.

  In such a case, for example, as shown in FIG. 19, the left and right feelings of the virtual listening space are associated with the points G and H of the control graphic CR21. In FIG. 19, the same reference numerals are given to the portions corresponding to those in FIG.

  Here, for example, the point G of the control graphic CR21 is associated with the sense of space on the left side as viewed from the user (listener) in the virtual listening space, and the point H in the virtual listening space is A sense of spaciousness on the right side as viewed from the user is associated.

  Further, it is assumed that the state of the control graphic CR21 shown in FIG. 19 is a reference state, that is, a state where there is no surround effect (no acoustic effect), and in the state where the control graphic CR21 is the reference state, In the figure, it is assumed that the virtual listening space VS11 shown on the right side is reproduced.

  From such a state, it is assumed that the user pinches out the display unit 22, that is, the surface of the touch panel as the input unit 21, with the two fingers of the right hand HD13 in the horizontal direction. Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting device 11 moves the point G and the point H of the control graphic CR21 arranged in the horizontal direction to the point G ′ and the point H ′ according to the obtained slide amount, and moves the four points E and A rectangular control graphic CR21 ″ having vertices at F, point G ′, and point H ′ is assumed. That is, the control graphic CR21 is transformed into the control graphic CR21 ''.

  When such an operation is performed on the control graphic CR21, the left spreading characteristic associated with the point G and the right spreading characteristic associated with the point H are shown in FIG. It changes as shown in the right virtual listening space VS21. That is, the virtual listening space VS21 is a space in which the left and right direction of the listener AU11 is wider than the virtual listening space VS11.

  In the virtual listening space VS21, the right and left extents of the listener AU11 are larger, and accordingly, the sound source SO11-2 and the sound source SO11-3 located on the front left and right of the listener AU11 become the sound source SO11-1. On the other hand, it moves so as to spread in the left-right direction.

  The movement of the point G to the point G ′ in the control graphic CR21 means a change in the sense of leftward expansion of the virtual listening space that is felt by the listener who was listening to the sound without the surround effect. Accordingly, the feeling of spreading on the left side of the virtual listening space VS11 changes. Similarly, the movement of the point H to the point H ′ in the control graphic CR21 means a change in the sense of rightward expansion of the virtual listening space that is felt by the listener who was listening to the sound without the surround effect. The feeling of spreading on the right side of the virtual listening space VS11 changes according to the amount of change.

  That is, in conjunction with the horizontal expansion of the control graphic CR21 to the control graphic CR21 ″, the sense of spaciousness of the virtual listening space (surround effect) is also expanded from the listener AU11 to the left and right. become.

  As described above, the sound effect adjusting device 11 enables surround adjustment by deformation of the control graphic CR21 instead of surround adjustment by a selection box as shown in FIG.

  As described above, in the adjustment of the surround effect by the conventional selection box, only one of several surround modes can be selected.

  On the other hand, according to the present technology, it is possible to continuously adjust changes in two acoustic parameters such as the left and right sides of the virtual listening space with a single control graphic. In addition, it is possible for the user to highly recognize the relevance of what surround effect can be obtained by deforming the control graphic, and intuitive and continuous operations can be performed. Thereby, the user can enjoy a wider surround effect than the adjustment of the surround effect by a simple selection box.

  Note that, as shown in FIG. 19, even when a sense of spread is associated with the control graphic CR <b> 21, the sound effect adjusting device 11 is the same as the sound effect adjusting process described with reference to the flowchart of FIG. 17. Since the process is performed, the description thereof is omitted.

<Modification 3 of the fourth embodiment>
[Adjustment of spaciousness and depth]
Furthermore, a feeling of depth in front of the virtual listening space may be associated with the control graphic CR21 shown in FIG.

  For example, as shown in FIG. 20, it is assumed that a control graphic CR21 ″ modified to adjust the left / right spread feeling is displayed. Further, it is assumed that the virtual listening space VS21 shown on the right side in the drawing is reproduced by the acoustic signal with respect to the state of the control graphic CR21 ″. In other words, in this state, a surround effect that expands the sense of left and right expansion of the virtual listening space has already been applied to the acoustic signal.

  In this example, a sense of depth in front of the virtual listening space is further associated with the point F of the control graphic CR21 ″.

  In this state, it is assumed that the user performs a sliding operation on the surface of the display unit 22 with the index finger of the left hand HD14 upward in the drawing. Then, the sound effect adjusting device 11 senses the movement of the user's finger, converts the movement into the sliding amount of the finger, and moves the point F of the control graphic CR21 ″ to the point F ″ according to the sliding amount. The four control points CR31 having four points E, F ″, G ′, and H ′ as vertices are obtained. That is, the control graphic CR21 ″ is transformed into the control graphic CR31.

  When such an operation is performed on the control graphic CR21 ″, the forward depth characteristic associated with the point F changes as shown in the right virtual listening space VS31 in the drawing. In other words, the virtual listening space VS31 has a wider depth in front of the listener AU11 than the virtual listening space VS21, and each sound source SO11 moves away from the listener AU11 as the forward depth increases. Is moving in the depth direction.

  The movement of the point F to the point F ″ in the control graphic CR21 ″ means a change in the depth feeling in front of the virtual listening space, and the depth feeling in front of the virtual listening space VS21 according to the amount of change. Is adjusted so that the sound signal changes.

  Note that, as shown in FIG. 20, even when a sense of spread is associated with the control graphic CR21 ″, the sound effect adjusting device 11 performs the sound effect adjusting process described with reference to the flowchart of FIG. Since the same processing is performed, description thereof is omitted. In addition, here, an example in which the sense of depth in front of the virtual listening space is associated with the point F has been described, but the sense of depth in the rear of the virtual listening space may also be associated with the point E.

<Modification 4 of the fourth embodiment>
[Adjustment of forward spread]
Further, in the example shown in FIG. 20, the user may perform an adjustment to further widen the sense of depth forward in the virtual listening space by operating the control graphic CR31.

  In such a case, for example, as shown in FIG. 21, it is assumed that the control graphic CR31 deformed so that the point F moves to the point F ″ is displayed on the display unit 22. Further, it is assumed that the virtual listening space VS31 shown on the right side in the drawing is reproduced by an acoustic signal with respect to the state of the control graphic CR31. In FIG. 21, the same reference numerals are given to the portions corresponding to those in FIG. 20, and the description thereof will be omitted as appropriate.

  In the state in which the control graphic CR31 is displayed, the sound has already been sounded so that the sense of breadth in the left-right direction is expanded and the sense of depth in the forward direction is also enlarged from the reference state without the surround effect. A surround effect is applied to the signal.

  From this state, the user pinches out the surface of the display unit 22 with the two fingers of the right hand HD15 in the horizontal direction in order to further widen the sense of depth to the front of the virtual listening space from side to side. And Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting apparatus 11 divides the point F ″ of the control graphic CR31 into two points F1 and F2 according to the obtained slide amount. As a result, the control graphic CR31 is transformed into a pentagonal control graphic CR31 'having vertices at point E, point F1, point F2, point G', and point H '.

  As described above, the operation of dividing the point F into the points F1 and F2 means that the forward depth feeling is further expanded to the left and right, and the position according to the sliding amount at the time of the user's pinch-out operation. The points F1 and F2 are positioned.

  Then, according to the distance from the point F to the point F1 or the point F2, the characteristics of the left and right depth sensations associated with the points F1 and F2 are shown in the right virtual listening space VS41 in the figure. Change. That is, in the virtual listening space VS41, the depth in front of the listener AU11 further expands to the left and right as compared with the virtual listening space VS31, and accordingly, the sound source SO11-2 and the sound source SO11-3 are also in the left back direction and the right back Moving in the direction.

  As described above, when the point F is divided into the points F1 and F2, the left / right feeling of the depth feeling in front of the virtual listening space changes. The sound effect adjusting unit 25 adjusts the surround effect on the sound signal so that the front depth of the virtual listening space is expanded to the left and right according to the control signal supplied from the control signal generating unit 34 according to the user's operation. To do.

  Even in this case, the sound effect adjusting apparatus 11 performs the same process as the sound effect adjusting process described with reference to the flowchart of FIG.

<Variation 5 of the fourth embodiment>
[Regarding listener position adjustment]
In the above description, the method for changing the acoustic characteristics of the virtual listening space with the listener as the center in the virtual listening space, that is, the method for adjusting the front / rear / left / right surround effect, has been described. Adjustment of the surround effect may be performed.

  In such a case, for example, as shown in FIG. 22, it is assumed that the control graphic CR31 'obtained by dividing the point F into the points F1 and F2 is displayed on the display unit 22. Further, it is assumed that the virtual listening space VS41 shown on the right side in the drawing is reproduced by the acoustic signal with respect to the state of the control graphic CR31 '. In FIG. 22, the same reference numerals are given to the portions corresponding to those in FIG. 21, and description thereof will be omitted as appropriate.

  In the state in which the control graphic CR31 'is displayed, the surround effect has already been applied to the acoustic signal so that the forward depth feeling is further expanded to the left and right.

  In this state, it is assumed that the user performs a slide operation on the surface of the display unit 22 in the horizontal direction in the drawing with the index finger of the right hand HD15. Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting device 11 moves the point E ″ of the control graphic CR31 ′ to the point E ″ according to the obtained slide amount, and moves the five points E ″, F1, F2, and G A pentagonal control graphic CR41 having “and point H” as vertices is used. That is, the control graphic CR31 'is transformed into the control graphic CR41.

  The operation of moving the point E to the point E ″ means moving the position of the listener in the virtual listening space, and the point E moves to a position corresponding to the slide amount of the user's slide operation.

  Then, according to the moving direction and moving distance of the point E, the position of the listener associated with the point E changes as shown in the right virtual listening space VS51 in the drawing. That is, in the virtual listening space VS51, the position of the listener AU11 has moved to the left in the drawing compared to the position of the listener AU11 in the virtual listening space VS41.

  As described above, when the point E moves to the point E ″, the position of the listener in the virtual listening space moves. The sound effect adjusting unit 25 adjusts the surround effect on the sound signal so that the position of the listener in the virtual listening space is changed according to the control signal supplied from the control signal generating unit 34 according to the user's operation. To do.

  Even in this case, the sound effect adjusting apparatus 11 performs the same process as the sound effect adjusting process described with reference to the flowchart of FIG.

  According to the operations described above, not only the change in the surround effect centered on the listener, but also the change in the surround effect equivalent to moving the listener's position in the venue is a change in the control graphic. It can be realized in conjunction. Of course, the position of the listener can be changed to various positions by deforming the control graphic, and an unprecedented user interface and sound effect can be realized.

<Fifth embodiment>
[Adjustment of central stereotaxic component]
Further, the central localization component of the acoustic signal may be adjusted by associating the gain of the central localization component with the control graphic.

  In such a case, for example, it is assumed that the control graphic CR21 shown in FIG. Here, points E and F of the control graphic CR21 are associated with a sense of depth in the rear and front of the virtual listening space.

  In this state, as shown in FIG. 23, when the user touches (tap) the inside of the control graphic CR21 with the right hand HD16, the point K, the point L, the point M, and the point N are further added to the control graphic CR21. A control graphic CR51 having a quadrangle as a vertex is displayed. In FIG. 23, parts corresponding to those in FIG. 15 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. Further, the operation for displaying the control graphic CR51 is not limited to the operation of tapping the area in the control graphic CR21, and may be any operation.

  When the control graphic CR51 is displayed, the user can adjust the acoustic effect on the central localization component of the acoustic signal by performing an operation on the control graphic CR51.

  For example, it is assumed that the state of the control graphic CR51 shown in FIG. 23 is a reference state, that is, a state where the central localization component is not changed and the acoustic effect is zero.

  When the state of the control graphic CR51 is a reference state, for example, it is assumed that the virtual listening space VS61 shown on the right side in the drawing is reproduced by an acoustic signal. In the virtual listening space VS61, the three sound sources SO11-1 to SO11-3 are arranged in front of the listener AU11, and the images of the sound sources SO11 are almost the same size.

  From such a state, it is assumed that the user slides the display unit 22 with the index finger of the right hand HD16. Then, the sound effect adjusting device 11 senses the movement of the user's finger and converts the movement into a finger slide amount. Then, the sound effect adjusting device 11 enlarges the control graphic CR51 in accordance with the obtained slide amount, and has a rectangular control graphic with the points K ′, L ′, M ′, and N ′ as vertices. Transform to CR51 ′.

  Here, the change in the size of the control graphic CR51 indicates the change in the gain of the central localization component of the acoustic signal. When the control graphic CR51 is enlarged, the gain of the central localization component increases and the control graphic CR51 increases. When the CR 51 is reduced, gain adjustment is performed so that the gain of the central localization component decreases.

  For example, when the position first touched by the user during the sliding operation to the control graphic CR51 is inside the control graphic CR51, the control graphic CR51 is reduced. On the other hand, if the position first touched by the user is outside the control graphic CR51 and is an area inside the control graphic CR21, the control graphic CR51 is enlarged.

  When an operation by the user is performed outside the control graphic CR21, the sense of depth may be adjusted by performing an operation on the control graphic CR21. Further, if the position first touched by the user is outside the control graphic CR51, the control graphic CR51 may be enlarged even if the position is an area outside the control graphic CR21.

  In the example of FIG. 23, since the user performs a slide operation by touching an area inside the control graphic CR51 and outside the control graphic CR51, the control graphic CR51 is enlarged and displayed as a control graphic CR51 ′. Is done.

  When the control graphic CR51 is enlarged and displayed in this way, the gain of the sound from the sound source SO11-1, which is the central localization component, is amplified from the state of the virtual listening space VS61, and the virtual listening space VS62 shown on the right side in the figure. The virtual listening space changes to the state of. In the virtual listening space VS62, as compared with the virtual listening space VS61, the image of the sound source SO11-1 is larger by the gain amplification. Accordingly, the sound effect adjustment unit 25 amplifies the central localization component of the sound signal.

  The enlargement of the image of the sound source SO11-1 in the virtual listening space VS62 here simulates the amplification of the sound from the sound source SO11-1. Further, in the gain adjustment of the central localization component, the gain adjustment amount may be expressed not only by changing the size of the control graphic CR51 but also by changing the color of the control graphic CR51, for example. Specifically, the color of the control graphic CR51 may be changed by replacing a change from a bright color to a dark color with a numerical magnitude relationship.

  Further, an arbitrary image may be displayed, and the gain adjustment amount of the central localization component may be expressed by changing the resolution of the image. Specifically, the change from the high image resolution state to the low image state may be replaced with a numerical magnitude relationship.

  In addition, an arbitrary image may be displayed and the adjustment amount of the central localization component may be expressed by changing the transparency of the image. Specifically, a change from a state where the transparency of the image is zero to a state where the image is completely transmissive, that is, a state where the image cannot be seen may be replaced with a numerical magnitude relationship.

  Thus, not only the modification of the control graphic but also the expression of the gain adjustment amount by changing the color and resolution is not limited to this example, and can be applied to all examples disclosed in this specification. is there. For example, the color, resolution, transparency, and the like of the above-described control graphic CR11 may be changed according to the user's operation on the control graphic CR11.

  As for the method of increasing or decreasing the center localization component, for example, if the input acoustic signal is a 5.1 channel signal, the gain of only the center channel (center channel) may be adjusted. If the input acoustic signal has only two channels, the two-channel acoustic signal is decomposed into left channel, central channel, and right channel components by signal processing, and then the central channel as the central localization component. Only the gain adjustment may be performed.

  As described above, a user interface that is more intuitive and easy to use can be provided by associating the gain of the central localization component as an acoustic parameter with the control graphic CR51.

  For example, in a 5.1 channel content such as a movie, there may be a line in the center channel, which is a central localization component. In this case, the gain of the center channel can be changed manually so that it is easy to hear the speech, but for this purpose, the user can make adjustments if the gain setting menu of each channel of 5.1 channel cannot be reached. Can not.

  Further, in the case of normal two-channel content, particularly music, the karaoke function can be realized by removing the central localization component by signal processing. However, in order to realize the karaoke function, the function must be validated by, for example, pressing a karaoke function button after proceeding to a deeper menu. In other words, even by adjusting the same central localization component, there are a plurality of menus and a plurality of functions, and it cannot be said that the current interface is easy to use.

  On the other hand, in the present technology, it is possible to add a function for realizing the adjustment of the central localization component only by giving one more command on the screen on which the surround adjustment is performed. Also, since a new control graphic CR51 is displayed in the middle of the control graphic CR21, it is easy to associate it if this control graphic CR51 is for adjusting the central localization component.

  Therefore, compared to the conventional method in which functions are called from separate menus and individually adjusted, this technology realizes extremely high convenience that a plurality of acoustic parameters can be continuously adjusted on one screen. Can do.

[Example of configuration of sound effect adjustment unit]
Next, the configuration of the acoustic effect adjustment unit 25 when the gain of the central localization component is adjusted using the control graphic CR51 shown in FIG.

  For example, it is assumed that the acoustic signal output from the acquisition unit 24 is a three-channel signal including a left-channel acoustic signal SL, a right-channel acoustic signal SR, and a central-channel acoustic signal SC. This corresponds to the fact that the content to be played is recorded in multiple channels.

  Here, for example, if the reproduction by the reproduction unit 26 is reproduction on a stereo channel (two channels), it is necessary to perform a so-called mixdown process on the multi-channel acoustic signal.

  In general, the mixdown process is a process of reducing the number of channels to two channels by mixing the signals of each channel at a constant ratio so that a multi-channel signal can be reproduced by a two-channel speaker.

  Therefore, when the acoustic signal output from the acquisition unit 24 is a three-channel signal, the central channel acoustic signal SC is added to the left-channel acoustic signal SL and the right-channel acoustic signal SR at a constant ratio. It corresponds to that.

  However, the sound effect adjusting device 11 does not perform this mixdown process at a constant ratio, and generates a control signal according to the deformation amount of the control graphic CR51. Then, the sound effect adjusting device 11 varies the mixing ratio of the sound signal SC of the center channel to the sound signal SL of the left channel and the sound signal SR of the right channel according to the control signal.

  Thereby, the gain of the central localization component can be adjusted according to the user's operation. For example, it is possible to increase the mixing ratio to emphasize the central localization component, or to reduce the mixing ratio and use it like karaoke.

  As described above, when the mixing ratio of the sound signal SC of the central channel is made variable by the control signal corresponding to the deformation amount of the control graphic CR51, the sound effect adjusting unit 25 has a configuration for adjusting the surround effect, A configuration for adjusting the central localization component shown in FIG. 24 is provided.

  In FIG. 24, the illustration of the configuration for adjusting the surround effect is omitted. The acoustic effect adjustment unit 25 illustrated in FIG. 24 includes a gain adjustment unit 291, an addition unit 292, and an addition unit 293.

  In this example, a control signal corresponding to the amount of deformation of the control graphic CR51 is supplied to the gain adjustment unit 291 and an acoustic signal SC of the center channel is supplied to the gain adjustment unit 291. Further, the left channel acoustic signal SL and the right channel acoustic signal SR are supplied to the adder 292 and the adder 293, respectively.

  The gain adjustment unit 291 adjusts the gain of the supplied acoustic signal SC based on the control signal supplied from the control signal generation unit 34, and supplies the gain to the addition unit 292 and the addition unit 293.

  The adding unit 292 adds the acoustic signal SC supplied from the gain adjusting unit 291 to the supplied acoustic signal SL to obtain the left channel acoustic signal SL ′ after gain adjustment, and supplies the acoustic signal SL ′ to the reproducing unit 26. Further, the adding unit 293 adds the acoustic signal SC supplied from the gain adjusting unit 291 to the supplied acoustic signal SR to obtain the right channel acoustic signal SR ′ after gain adjustment, and supplies the acoustic signal SR ′ to the reproducing unit 26. .

  If the acoustic signal is a left and right channel signal, a signal corresponding to the center channel is generated using the left channel and right channel signals, and the gain of the signal is adjusted to achieve the center localization. The gain of the component can be adjusted.

  Further, the gain adjustment of the central localization component may be performed on the acoustic signal after the surround adjustment, or the surround adjustment may be performed on the acoustic signal after the gain adjustment of the central localization component.

[Description of sound effect adjustment processing]
Further, referring to the flowchart of FIG. 25, the sound effect adjusting unit 25 is configured as shown in FIG. The sound effect adjustment process performed by will be described.

  In step S131, the display control unit 33 supplies the image data of the control graphic CR21 to the display unit 22 and causes the display unit 22 to display the control graphic CR21. Then, the display unit 22 displays the control graphic CR21 based on the image data supplied from the display control unit 33.

  When the user wants to adjust the gain of the central localization component, the user taps the inside of the control graphic CR21, that is, the area of the control graphic CR21 to instruct the display of the control graphic CR51. When the user performs an operation on the control graphic CR21, the touch panel as the input unit 21 supplies a signal corresponding to the user operation to the control unit 23.

  In step S <b> 132, the detection unit 31 detects an operation of the user inside the control graphic CR <b> 21 based on the signal supplied from the input unit 21. Specifically, the detection unit 31 detects an operation of the user inside the control graphic CR21 from the touch position of the user on the touch panel.

  When an operation to the inside of the control graphic CR21 is detected, the display control unit 33 supplies image data of the control graphic CR51 to the display unit 22 in response to the detection in step S133, and the control graphic in the display unit 22 is supplied. A control graphic CR51 is further displayed inside the CR21. Thereby, the display unit 22 displays the control graphic CR51 inside the control graphic CR21, for example, as shown in FIG.

  When the control graphic CR51 is displayed, the user performs a slide operation on the control graphic CR51 to instruct the gain adjustment of the central localization component of the acoustic signal.

  It should be noted that, depending on whether the central localization component is increased or decreased, the user operates the control graphic CR51, that is, operates on the area of the control graphic CR51, or outside the control graphic CR51 and the control graphic. Perform operations on the area inside CR21.

  In step S134, the detection unit 31 detects the user's operation on the area inside the control graphic CR21 based on the signal supplied from the input unit 21 in response to the user's operation on the control graphic CR51.

  Specifically, the detection unit 31 detects the touch position of the user on the touch panel and the slide amount that is the amount of movement of the user's finger that is in contact with the touch panel.

  In step S135, the setting unit 32 determines whether or not the touch position detected by the detection unit 31 is an area outside the control graphic CR51 displayed inside. That is, when the first touch position by the user is inside the control graphic CR21 and is an area outside the control graphic CR51, it is determined that the touch position is an area outside the control graphic CR51.

  If it is determined in step S135 that the touch position is an area outside the control graphic CR51, the process proceeds to step S136.

  In step S136, the setting unit 32 sets the enlargement amount of the control graphic CR51 displayed inside the control graphic CR21 according to the slide amount detected by the detection unit 31. For example, the enlargement amount is determined such that each point (vertex) of the control graphic CR51 moves by a predetermined distance with respect to the slide amount.

  In step S137, the display control unit 33 controls the display unit 22 based on the enlargement amount determined in step S136, and enlarges the control graphic CR51. Thereby, for example, the control graphic CR51 shown in FIG. 23 is enlarged and displayed on the control graphic CR51 '.

  In step S138, the control signal generator 34 determines the amount of increase in the gain of the central localization component in accordance with the amount of enlargement of the control graphic CR51. The control signal generation unit 34 generates a control signal for increasing the gain of the central localization component of the acoustic signal by the determined increase amount, and supplies the control signal to the gain adjustment unit 291 of the acoustic effect adjustment unit 25.

  In step S139, the acoustic effect adjustment unit 25 performs gain adjustment of the central localization component on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and the acoustic signal obtained as a result thereof Is supplied to the reproduction unit 26.

  Specifically, the gain adjustment unit 291 adjusts the gain of the supplied acoustic signal SC based on the control signal supplied from the control signal generation unit 34, and supplies it to the addition unit 292 and the addition unit 293. Then, the adding unit 292 adds the acoustic signal SC supplied from the gain adjusting unit 291 to the supplied acoustic signal SL to obtain an acoustic signal SL ′, which is supplied to the reproducing unit 26. Further, the adding unit 293 adds the acoustic signal SC supplied from the gain adjusting unit 291 to the supplied acoustic signal SR to obtain an acoustic signal SR ′, which is supplied to the reproducing unit 26.

  The reproduction unit 26 reproduces sound based on the acoustic signals supplied from the addition unit 292 and the addition unit 293.

  When the gain adjustment of the central localization component of the acoustic signal is performed in this way, the acoustic effect adjustment processing is completed.

  If it is determined in step S135 that the touch position is not an area outside the control graphic CR51, that is, an area inside the control graphic CR51, the process proceeds to step S140.

  In step S140, the setting unit 32 sets the reduction amount of the control graphic CR51 displayed inside the control graphic CR21 according to the slide amount detected by the detection unit 31.

  In step S141, the display control unit 33 controls the display unit 22 based on the reduction amount determined in step S140 to reduce the control graphic CR51.

  In step S142, the control signal generator 34 determines the amount of decrease in the gain of the central localization component according to the amount of reduction of the control graphic CR51. The control signal generation unit 34 generates a control signal that decreases the gain of the central localization component of the acoustic signal by the determined reduction amount, and supplies the control signal to the gain adjustment unit 291 of the acoustic effect adjustment unit 25.

  In step S143, the acoustic effect adjustment unit 25 performs gain adjustment of the central localization component on the acoustic signal supplied from the acquisition unit 24 based on the control signal from the control signal generation unit 34, and the acoustic signal obtained as a result thereof Is supplied to the reproduction unit 26. That is, in step S143, processing similar to that in step S139 is performed.

  When the gain of the central localization component of the acoustic signal is adjusted and the acoustic signal is supplied from the acoustic effect adjustment unit 25 to the reproduction unit 26, the reproduction unit 26 is based on the acoustic signal supplied from the acoustic effect adjustment unit 25. Then, the sound is reproduced, and the sound effect adjustment process ends.

  As described above, the sound effect adjusting device 11 deforms the control graphic CR51 in accordance with the user's operation on the control graphic CR51 and adjusts the gain of the central localization component of the acoustic signal according to the deformation. .

  According to the sound effect adjusting device 11, the control graphic CR51 associated with the sound parameter for gain adjustment is deformed according to the user operation, and at the same time, the sound effect is adjusted according to the deformation, thereby allowing the user to Intuitive operation can be realized. That is, a user interface that is easier to understand and use can be provided to the user.

  In this specification, only typical operations for the control graphic CR51 are described. However, many other variations of the operation for the control graphic CR51 are conceivable. The present technology can also be applied to the adjustment of the corresponding acoustic effect.

<Sixth embodiment>
[Equalizer adjustment and surround adjustment]
Further, acoustic parameters of different categories (types) such as an acoustic parameter for equalizer adjustment and an acoustic parameter for surround adjustment may be associated with each vertex of the control graphic.

  For example, when an acoustic parameter for equalizer adjustment and an acoustic parameter for surround adjustment are associated with the control graphic, an operation is performed on the control graphic as shown in FIG. In FIG. 26, the same reference numerals are given to the portions corresponding to those in FIG. 4 or FIG.

  For example, assume that a control graphic CR11 having points A, B, C, and D as vertices is displayed on the display unit 22 as shown in the upper side of FIG.

  In the control graphic CR11, the point A and the point B are associated with a gain of 100 Hz and a gain of 10 kHz of the acoustic signal. Further, points C and D are associated with a sense of leftward and rightward expansion of the virtual listening space.

  Therefore, for example, as shown in the upper side in the figure, when the user performs a pinch-out operation in the vertical direction with the right hand HD11, the control graphic CR11 is expanded in the vertical direction according to the operation and transformed into the control graphic CR11 ′. The Then, according to the deformation of the control graphic CR11, as shown by the right curve C11 and curve C12 in the figure, the sound signal gain adjustment (equalizer adjustment) so that the 100 Hz characteristic and the 10 kHz characteristic of the acoustic signal change. ) Is performed by the acoustic effect adjusting unit 25.

  Further, as shown on the lower side in the figure, when the user performs a pinch-out operation in the horizontal direction with respect to the control graphic CR11 ′ with the right hand HD11, the control graphic CR11 ′ is expanded in the horizontal direction according to the operation. Then, it is transformed into a control graphic CR61. The control graphic CR61 is a quadrangle having points A ′, B ′, C ″, and D ″ as vertices.

  When the control graphic CR11 'is transformed into the control graphic CR61, the sense of expansion of the virtual listening space of the acoustic signal in the left-right direction is expanded as shown on the right side in the drawing according to the deformation. In this example, the virtual listening space VS71 in a state where the control graphic CR11 'is displayed is changed to a virtual listening space VS72 along with the deformation to the control graphic CR61. That is, the virtual listening space is expanded in the left-right direction, and the positions of the sound source SO11-2 and the sound source SO11-3 are moved outward so as to move away from the sound source SO11-1 according to the expansion.

  When the control graphic CR11 'is expanded in the horizontal direction, the acoustic effect adjusting unit 25 adjusts the sense of breadth to the acoustic signal, that is, adjusts the surround effect so that the sense of breadth of the virtual listening space is magnified.

  As described above, the equalizer adjustment can be associated with the vertical operation of one control graphic CR11 and the surround adjustment can be associated with the horizontal operation. Therefore, compared to the conventional method in which functions are called from separate menus and adjusted individually, the present technology allows continuous adjustment of a plurality of acoustic parameters on a single screen, resulting in higher convenience. Can be provided to the user.

  The user may be allowed to set what acoustic parameters are associated with each part (vertex) of the control graphic.

<Seventh embodiment>
[Equalizer adjustment and surround adjustment]
In the above description, an example in which an acoustic parameter is associated with a vertex of one graphic has been described. However, a control graphic may be displayed on each surface of a three-dimensional graphic.

  In such a case, for example, as shown in FIG. 27, the display control unit 33 causes the display unit 22 to display the three-dimensional control graphic DCR11. In this example, the three-dimensional control graphic DCR11 is a cube, and the control graphic is displayed on the surface of the cube. Specifically, as shown on the upper side in the figure, a control graphic CR71, a control graphic CR72, and a control graphic CR73 are displayed on the front, top, and right side of the three-dimensional control graphic DCR11, respectively. Yes.

  For example, the control graphic CR71 is a control graphic for equalizer adjustment, and gain characteristics of 10 kHz and 100 Hz are associated with the upper and lower points in the vertical direction of the control graphic CR71, respectively.

  The control graphic CR72 is a control graphic for surround adjustment, and the control graphic CR73 is a control graphic for equalizer adjustment. In particular, gain characteristics of 5 kHz and 500 Hz are associated with the upper and lower points in the vertical direction of the control graphic CR73, respectively.

  In such a three-dimensional control graphic DCR11, for example, it is possible to operate only on the control graphic displayed on the surface located on the front side when viewed from the user. Therefore, in the upper side of the figure, the control figure CR71 displayed on the front can be operated.

  Also, from this state, when the user performs a finger slide operation in the direction indicated by the arrow Q31, that is, in the left direction in the figure, the three-dimensional control graphic DCR11 rotates leftward, as shown in the lower right in the figure. Then, the control graphic CR73 is positioned in front. In this state, the user can adjust the sound signal equalizer by operating the control graphic CR73.

  Furthermore, when the user performs a finger slide operation in the direction indicated by the arrow Q32 from the state shown in the upper side in the drawing, that is, the lower side in the drawing, the three-dimensional control graphic DCR11 rotates downward, As shown in the lower left, the control graphic CR72 is positioned in front. In this state, the user can adjust the surround sound signal by operating the control graphic CR72.

  Here, an example in which the control graphic is displayed on the three surfaces of the three-dimensional control graphic DCR11 has been described, but the control graphic may be displayed on all surfaces. In this case, the user rotates the three-dimensional control graphic DCR11 in an arbitrary direction to display a desired surface in front, and adjusts the acoustic effect by performing an operation on the control graphic displayed on the surface. be able to. Of course, the user can rotate the stereoscopic control graphic DCR11 one or more times in the same direction or in the opposite direction.

  The solid control graphic is not limited to a cube, and may be a solid graphic having a plurality of surfaces such as a rectangular parallelepiped, a tetrahedron, and an octahedron. Furthermore, according to the adjustment amount of the acoustic parameter associated with each surface of the three-dimensional control graphic DCR11, what adjustment is performed on each surface by changing the brightness and color of the surface. Can be grasped more easily.

  In this way, by assigning acoustic parameters to each plane on one stereoscopic control graphic DCR11, items of acoustic parameters are displayed in a row in the vertical or horizontal direction as text on the screen as in the past. The acoustic parameters can be selected more easily than in the case of

<Eighth embodiment>
[Usage environment]
In the above description, it has been described that the sound effect adjusting device 11 is also a display device, and the sound effect can be felt by the display device itself.

  That is, as shown in FIG. 28, for example, the sound effect adjusting apparatus 11 is provided with a speaker 321-1 and a speaker 321-2 as the playback unit 26, and the sound from these speakers 321-1 and 321-2. Audio based on the signal is output. Hereinafter, the speaker 321-1 and the speaker 321-2 are also simply referred to as the speaker 321 when it is not necessary to distinguish between them.

  In addition, a control graphic CR81 associated with an acoustic parameter is displayed on the display unit 22 of the acoustic effect adjusting device 11, and sound with an acoustic effect corresponding to the control graphic CR81 is reproduced from the speaker 321. The

  Further, when an operation is performed on the control graphic CR81, the control graphic CR81 is transformed into a control graphic CR81 'as shown on the lower side in the drawing.

  Then, the acoustic effect is adjusted with the deformation of the control graphic CR81. Here, for example, it is assumed that the control graphic CR81 is associated with a sense of left and right spreading as a surround effect. In such a case, the sense of lateral expansion increases with the deformation of the control graphic CR81, and the speaker 321 moves to the outside with respect to the sound effect adjusting device 11, as indicated by arrows Q41 and Q42. The sound effect can be obtained. That is, the user can feel the acoustic effect corresponding to the operation on the control graphic CR81 with the acoustic effect adjusting device 11.

  In addition to the usage environment in which the display device itself can feel the acoustic effect, the present technology can be applied to a usage environment in which the display device itself is not provided with a speaker and the display device is a remote commander. It is.

  In such a case, for example, as shown in FIG. 29, the sound effect adjusting device 351 that is a display device is not provided with a speaker, and the sound effect adjusting device 351 functions as a remote commander and is connected to the external device 352. To instruct sound signal reproduction and sound effect adjustment.

  In this example, the external device 352 is provided with two speakers 353-1 and a speaker 353-2. The external device 352 adjusts the acoustic effect of the acoustic signal according to the control of the acoustic effect adjusting device 351, and outputs sound based on the acoustic signal from the speaker 353-1 and the speaker 353-2. Hereinafter, the speaker 353-1 and the speaker 353-2 are also simply referred to as the speaker 353 when it is not necessary to distinguish between them.

  For example, a control graphic CR91 associated with an acoustic parameter is displayed on the display screen of the acoustic effect adjustment device 351, and an acoustic effect corresponding to the control graphic CR91 is displayed from the external device 352 as shown in the upper left in the figure. Is played.

  Further, when an operation is performed on the control graphic CR91, the control graphic CR91 is transformed into a control graphic CR91 'as shown on the lower side in the drawing.

  Then, the sound effect adjusting device 351 transmits a control signal indicating that the sound effect according to the deformation of the control graphic CR91 is applied to the external device 352, and causes the external device 352 to adjust the sound effect according to the control signal. .

  Here, for example, it is assumed that the control graphic CR91 is associated with a sense of left and right spreading as a surround effect. In such a case, the sound effect adjusting device 351 transmits a control signal to the external device 352 to instruct to adjust the feeling of spread so that the feeling of breadth in the horizontal direction increases with the deformation of the control graphic CR91. To do. Then, the external device 352 receives a control signal from the sound effect adjusting device 351. Furthermore, the external device 352 can obtain an acoustic effect as if the speaker 353 has moved outward relative to the external device 352 based on the received control signal, for example, as indicated by arrows Q51 and Q52. Adjust the surround sound signal. Thereby, the user can feel the acoustic effect according to the operation on the control graphic CR91.

[Configuration example of sound effect adjusting device]
As described above, when the sound effect adjusting device 351 functions as a remote commander and instructs the external device 352 to adjust the sound effect, the sound effect adjusting device 351 is configured as shown in FIG. 30, for example. In FIG. 30, portions corresponding to those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  A sound effect adjusting device 351 shown in FIG. 30 includes an input unit 21, a display unit 22, a control unit 23, and a communication unit 371.

  The control unit 23 displays a control graphic on the display unit 22 based on a signal supplied from the input unit 21 such as a touch panel, or instructs the communication unit 371 to transmit a control signal to the external device 352. To do.

  The control unit 23 includes a detection unit 31, a setting unit 32, a display control unit 33, and a control signal generation unit 34. For example, the control signal generation unit 34 generates a control signal instructing adjustment of the acoustic effect in response to a user operation on the control graphic, and supplies the control signal to the communication unit 371.

  The communication unit 371 transmits the control signal supplied from the control signal generation unit 34 and instructing adjustment of the acoustic effect to the external device 352 by, for example, wireless communication. In addition, the communication unit 371 also transmits to the external device 352 a control signal for instructing the reproduction or stop of the sound signal according to the control of the control unit 23.

  The sound effect adjusting device 351 also performs the same processing as the sound effect adjusting device 11 described above, and controls the adjustment of the sound effect of the sound signal.

<Ninth embodiment>
[Sound effects for each touch position]
In the above, the sound effect has been adjusted by deforming the control graphic on the screen of the display unit, but a new user interface is constructed by changing the sound effect according to the position of touching the screen itself. It is also possible.

  For example, as shown in FIG. 31, when the display screen of the sound effect adjustment device 381 is divided into 20 parts and the user touches (contacts) any of the divided areas, the sound is heard from the area touched by the user. Sound effect that makes you hear is realized.

  In this example, the sound effect adjusting device 381 is provided with two speakers 382-1 and a speaker 382-2, and the sound effect adjusting device 381 is based on the sound signal subjected to the sound effect, and these speakers 382. -1 and the speaker 382-2. Hereinafter, the speaker 382-1 and the speaker 382-2 are also simply referred to as the speaker 382 when it is not necessary to distinguish between them.

  In addition, on the display screen of the sound effect adjusting device 381, any one of the letters “A” to “T” is displayed in each of the 20 divided areas, and each area is a square area. Hereinafter, each divided area is referred to as a character area displayed in the area. That is, for example, an area where the character “A” is displayed is also referred to as an A area.

  In such an acoustic effect adjusting device 381, for each of the areas A to T, when the sound is reproduced by the speaker 382, an acoustic signal file to which an acoustic effect is output such that sound is output from the area is stored in advance. Prepared and held. When the user performs a touch operation on the display screen of the sound effect adjusting device 381, a file (acoustic signal) associated with the touched area is reproduced.

  For example, when the user touches the area P on the display screen of the sound effect adjusting device 381, it is as if sound is output from the position on the lower left side of the sound effect adjusting device 381, as shown on the left side in the figure. The sound signal of the sound effect is reproduced by the speaker 382.

  Also, for example, when the user touches the area E on the display screen of the sound effect adjustment device 381, as shown on the right side in the figure, it is as if sound is output from the position on the upper right side of the sound effect adjustment device 381. An acoustic signal having such an acoustic effect is reproduced by the speaker 382.

  In addition, the expression of the left and right position of the screen by sound, that is, the control of the position of the virtual sound source in the left and right direction is realized by changing the volume balance of the sound output from the speaker 382-1 and the speaker 382-2, for example. Can do. It is also known that the expression of the vertical position of the screen by sound can be reproduced by giving a special notch characteristic to the sound reproduced by the speaker 382-1 and the speaker 382-2.

  Furthermore, most effectively, if the speaker 382-3 and the speaker 382-4 are provided in the vertical direction of the sound effect adjusting device 381 in addition to the speaker 382-1 and the speaker 382-2, the sound is more surely up and down. The position can be expressed.

  For example, in the tablet, distribution and subscription of electronic books are becoming common. As an application program for displaying such an electronic book, there is a program that outputs a sound when a page is turned. However, with such an application program, the same sound is output only wherever the user touches the screen.

  On the other hand, according to the sound effect adjusting device 381, when turning the page of the electronic book, the user feels that the sound can be heard from the left side if the user touches the left side of the screen and from the upper side if the user touches the upper side of the screen. And the reality can be further improved.

  Therefore, it is possible to increase the degree of coincidence between the physical book operation feeling that many users are accustomed to and the operation sound reproduced by the tablet. As a result, it is possible to configure a user interface with a high degree of user satisfaction that reduces the uncomfortable feeling of operation.

  The configuration of the sound effect adjusting device 381 is the same as that of the sound effect adjusting device 11 shown in FIG. For example, the display control unit 33 displays the areas A to T on the display unit 22, and when an operation is performed on these regions by the user, a signal corresponding to the user operation is sent from the input unit 21 to the control unit 23. Is supplied.

  Then, the detection unit 31 identifies an area touched by the user based on the signal from the input unit 21, and the control signal generation unit 34 supplies a control signal corresponding to the identification result to the acoustic effect adjustment unit 25. To do. Then, the acoustic effect adjustment unit 25 acquires the acoustic signal file specified by the control signal from the control signal generation unit 34 from the acquisition unit 24 and supplies the file to the reproduction unit 26, and the reproduction unit 26 supplies the received acoustic signal. Based on the output.

<Tenth embodiment>
[Sound effects according to the sliding direction]
Furthermore, according to the present technology, when playing an electronic book or the like, for example, when the paper displayed on the screen is slid in a predetermined direction so as to turn the page, the sliding direction is determined according to the sliding direction. It is also possible to realize an acoustic effect.

  In such a case, for example, as illustrated in FIG. 32, a paper image as an electronic book is displayed on the display unit 421 of the sound effect adjustment device 411 to which the present technology is applied. The paper displayed on the display unit 421 is overlapped, and each paper forms one page. Further, the display unit 421 is provided with a touch panel corresponding to the input unit 21 in FIG. 2 in an overlapping manner, and an operation on the display unit 421 by the user is accepted by the touch panel.

  Furthermore, two speakers 422-1 and 422-2 are provided at the left and right ends in the drawing of the sound effect adjusting device 411, and the sound effect adjusting device 411 receives sound signals according to the page turning operation by the user. Based on the above, sound is output from the speaker 422-1 and the speaker 422-2. Hereinafter, the speaker 422-1 and the speaker 422-2 are also simply referred to as a speaker 422 when it is not necessary to distinguish between them.

  For example, when the user performs a slide operation with the finger on the surface of the display unit 421 so that the paper displayed on the foremost side as shown in FIG. 32 is turned to the right side in the drawing, the display unit is displayed according to the slide operation. 421 slides the foremost paper from the left to the right.

  At the same time, the sound effect adjusting device 411 outputs sound based on the sound signal from the speaker 422-1 at time T1, as indicated by an arrow Q61, in order to express such a slide operation with sound. Further, the sound effect adjusting device 411 then outputs sound based on the sound signal from the speaker 422-2 at time T2. As a result, an acoustic effect expressing a sense of movement from the left side to the right side of the page (paper) can be obtained, so that the degree of coincidence between the movement of the paper on the screen of the display unit 421 and the sound can be further increased. .

  Furthermore, the sound effect adjustment device 411 may output a sound based on the sound signal from the speaker 422 as indicated by an arrow Q62 in accordance with a rightward slide operation by the user.

That is, the sound effect adjusting apparatus 411, to output a sound based on the acoustic signal from the speaker 422-1 at time T1, the volume of the voice decreases with time, the output of the audio from the speaker 422-1 is at time T _mid Control the volume of the audio so that it stops. In Figure 32, the straight line C71 indicates the volume of sound output from the speaker 422-1, the sound volume of the sound is smaller with decreasing distance from the time T1 to the time T _mid.

Furthermore, the sound effect adjusting apparatus 411, to output a sound based on the acoustic signal from the speaker 422-2 at time T _mid, volume of the sound increases with time until the time T2, then the voice volume until time T _end The sound volume is controlled so that becomes smaller with time.

In Figure 32, the straight line C72 indicates the volume of sound output from the speaker 422-2, the sound volume of the sound, from the time T _mid increases and approaches the time T2, from time T2 to time T _end The sound volume is gradually decreasing. Also, audio playback is stopped at time T _end .

  When such a sound is reproduced, particularly when the movement of the paper is slow, the degree of coincidence between the reproduced sound and the sound change caused by the actual page turning increases.

  As described above, by changing the sound corresponding to the movement of the moving object (image) on the screen, the reality can be further improved. As a result, it is possible to configure a user interface with a high degree of user satisfaction that reduces the uncomfortable feeling of operation.

  The configuration of the sound effect adjusting device 411 described with reference to FIG. 32 is also the same as the configuration of the sound effect adjusting device 11 of FIG. That is, the user's slide operation is detected by the detection unit 31, and a control signal for controlling the sound volume according to the detected operation is generated by the control signal generation unit 34. Then, the acoustic effect adjustment unit 25 controls the volume of the acoustic signal based on the control signal generated by the control signal generation unit 34, thereby realizing an acoustic effect corresponding to the movement of the object such as page turning.

  As described above, according to the present technology, the acoustic effect is changed in accordance with the change or position of the figure or the image on the screen, so that it is more effective than the conventional acoustic adjustment method without image. An easy-to-understand and easy-to-use user interface can be provided.

  By the way, the above-described series of processing can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software is installed in the computer. Here, the computer includes, for example, a general-purpose personal computer capable of executing various functions by installing a computer incorporated in dedicated hardware and various programs.

  FIG. 33 is a block diagram illustrating a configuration example of hardware of a computer that executes the above-described series of processing by a program.

  In a computer, a CPU (Central Processing Unit) 701, a ROM (Read Only Memory) 702, and a RAM (Random Access Memory) 703 are connected to each other by a bus 704.

  An input / output interface 705 is further connected to the bus 704. An input unit 706, an output unit 707, a recording unit 708, a communication unit 709, and a drive 710 are connected to the input / output interface 705.

  The input unit 706 includes a keyboard, a mouse, a microphone, a touch panel, and the like. The output unit 707 includes a display, a speaker, and the like. The recording unit 708 includes a hard disk, a nonvolatile memory, and the like. The communication unit 709 includes a network interface. The drive 710 drives a removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.

  In the computer configured as described above, the CPU 701 loads the program recorded in the recording unit 708 into the RAM 703 via the input / output interface 705 and the bus 704 and executes the program, for example. Is performed.

  The program executed by the computer (CPU 701) can be provided by being recorded on a removable medium 711 as a package medium, for example. The program can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.

  In the computer, the program can be installed in the recording unit 708 via the input / output interface 705 by attaching the removable medium 711 to the drive 710. Further, the program can be received by the communication unit 709 via a wired or wireless transmission medium and installed in the recording unit 708. In addition, the program can be installed in the ROM 702 or the recording unit 708 in advance.

  The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  The embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology.

  For example, the present technology can take a configuration of cloud computing in which one function is shared by a plurality of devices via a network and is jointly processed.

  In addition, each step described in the above flowchart can be executed by being shared by a plurality of apparatuses in addition to being executed by one apparatus.

  Further, when a plurality of processes are included in one step, the plurality of processes included in the one step can be executed by being shared by a plurality of apparatuses in addition to being executed by one apparatus.

  DESCRIPTION OF SYMBOLS 11 Sound effect adjustment apparatus, 21 Input part, 22 Display part, 23 Control part, 25 Sound effect adjustment part, 26 Playback part, 31 Detection part, 32 Setting part, 33 Display control part, 34 Control signal generation part

Claims (14)

A display control unit for displaying a control graphic for adjusting the acoustic effect of the acoustic signal, and continuously changing the control graphic in accordance with a user operation on the control graphic;
For a plurality of acoustic parameters associated with different portions of the control graphic for applying the acoustic effect to the acoustic signal, the acoustic parameters are continuously changed in conjunction with the change of the control graphic. With that
Change the acoustic characteristics of the virtual listening space around the listener of the virtual listening space reproduced by the acoustic signal,
Or a control unit that changes the position of the listener in the virtual listening space reproduced by the acoustic signal. A detection unit that detects the user's operation on the control graphic by detecting the user's operation on a touch panel provided to be superimposed on a display unit that displays the control graphic;
The display control unit continuously changes the control graphic according to the detection result by the detection unit,
The acoustic effect adjustment apparatus according to claim 1, wherein the control unit continuously changes the acoustic parameter according to the detection result of the detection unit. A detection unit for detecting an operation of the user on the control graphic by detecting an operation on the control graphic by a pointer displayed together with the control graphic;
The display control unit continuously changes the control graphic according to the detection result by the detection unit,
The acoustic effect adjustment apparatus according to claim 1, wherein the control unit continuously changes the acoustic parameter according to the detection result of the detection unit. An acoustic effect adjustment unit that applies the acoustic effect to the acoustic signal based on the acoustic parameter changed in accordance with a change in the control graphic;
The sound effect adjustment apparatus according to any one of claims 1 to 3, further comprising: a reproduction unit that reproduces sound based on the sound signal to which the sound effect is applied by the sound effect adjustment unit. The acoustic effect adjustment apparatus according to claim 4, wherein the acoustic effect is continuously changed by parametricizing the acoustic parameter . The acoustic effect adjustment unit includes the acoustic signal that has been subjected to a predetermined first acoustic effect and the acoustic that has been subjected to a second acoustic effect that is different from the predetermined first acoustic effect. The sound effect adjusting apparatus according to claim 4, wherein the sound effect is continuously changed by crossfading a signal according to a change in the sound parameter. The acoustic effect according to any one of claims 1 to 3, further comprising a communication unit that transmits a control signal corresponding to a change in the acoustic parameter to an external device that applies the acoustic effect to the acoustic signal. Adjustment device. The sound effect adjustment apparatus according to any one of claims 1 to 7, wherein the display control unit further displays a control graphic different from the control graphic together with the control graphic. The display control unit further displays an image reminiscent of the acoustic parameter together with the control graphic, and continuously changes the control graphic and the image in accordance with the user operation on the control graphic. The sound effect adjusting device according to any one of claims 1 to 7. The acoustic effect adjustment apparatus according to any one of claims 1 to 9, wherein the display control unit continuously deforms the control graphic in accordance with an operation of the user with respect to the control graphic. The acoustic effect adjustment device according to claim 10, wherein the acoustic parameters of different types are associated with the first vertex and the second vertex of the control graphic. The said display control part changes the color, the resolution, or the transparency of the said control figure continuously according to the said user's operation with respect to the said control figure. Sound effect adjusting device. While displaying a control graphic for adjusting the acoustic effect of the acoustic signal, continuously changing the control graphic according to the user's operation on the control graphic,
For a plurality of acoustic parameters associated with different portions of the control graphic for applying the acoustic effect to the acoustic signal, the acoustic parameters are continuously changed in conjunction with the change of the control graphic. With that
Change the acoustic characteristics of the virtual listening space around the listener of the virtual listening space reproduced by the acoustic signal,
Or an acoustic effect adjustment method including a step of changing a position of a listener in a virtual listening space reproduced by the acoustic signal. While displaying a control graphic for adjusting the acoustic effect of the acoustic signal, continuously changing the control graphic according to the user's operation on the control graphic,
For a plurality of acoustic parameters associated with different portions of the control graphic for applying the acoustic effect to the acoustic signal, the acoustic parameters are continuously changed in conjunction with the change of the control graphic. With that
Change the acoustic characteristics of the virtual listening space around the listener of the virtual listening space reproduced by the acoustic signal,
Or a program for causing a computer to execute a process including a step of changing a position of a listener in a virtual listening space reproduced by the acoustic signal.

Images