JP6027314B2 - Acoustic apparatus, parameter changing method and program - Google Patents

Description

  The present invention relates to an acoustic device capable of changing acoustic parameters.

  In an acoustic apparatus that reproduces sound, various acoustic parameters can generally be changed in order to adjust sound quality. An example of a function for changing such acoustic parameters is an equalizer function. The equalizer function is a function that changes the frequency characteristics of the audio signal by changing parameters such as an amplification degree (gain) and a Q value for each of a plurality of bands. By using such a function, the user can adjust the sound quality of the sound reproduced by the audio device to a desired sound quality.

  Note that there is Patent Document 1 as a document disclosing a technology related to the technology described in this specification.

International Publication No. 2008/090896

  In recent years, there has been proposed an acoustic device that employs a touch panel and can change acoustic parameters when the user touches the touch panel. In general, in an audio device that employs a touch panel, the size of a parameter can be changed by a user touching a command button on a display screen. However, the user has to know in advance how the size of the parameter changes by touching the command button, and the size of the parameter cannot be changed intuitively.

  By the way, when using an acoustic device as an in-vehicle device mounted on a vehicle, during a relatively short period of time such as when a signal is stopped, the user pays attention to the surroundings of the vehicle and the like. There is a scene to change the parameter. For this reason, especially when the acoustic device is an in-vehicle device, there has been a strong demand for a technique that can intuitively change the size of acoustic parameters.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of intuitively changing the size of acoustic parameters.

In order to solve the above-mentioned problem, the invention of claim 1 is an acoustic device, wherein a display means for displaying a graphic indicating the size of an acoustic parameter on a display screen, a touch panel provided on the display screen, And changing means for changing the size of the parameter and the figure in response to operations of pinch-in and pinch-out to the touch panel, and the parameter includes a sound field level indicating a sense of sound spread. The changing means changes the size of the sound field level and the size of the figure in response to the operation of the pinch-in and the pinch-out, and the changing means is one of the figures to the touch panel. The figure is separated into two figures in response to an operation of moving a finger from the outside to the other outside, and each of the two figures after the separation is separated from the acoustic parameters. Indicating the size of the data.

Further, the invention of claim 2, in the audio apparatus according to claim 1, wherein the acoustic device is a vehicle apparatus mounted on a vehicle.

The invention of claim 3 is a parameter changing method for changing acoustic parameters, wherein (a) a graphic indicating the size of the acoustic parameters is displayed on a display screen, and (b) the display. A step of changing the size of the parameter and the figure in response to a pinch-in and pinch-out operation on a touch panel provided on a screen, and the parameter is a sound field level indicating a sense of sound spread The step (b) changes the size of the sound field level and the size of the figure in response to the operation of the pinch-in and the pinch-out, and the step (b) In response to an operation of moving a finger from one outside of the figure to the other to the touch panel, the figure is separated into two figures, and each of the two figures after separation is It indicates the magnitude of the parameters.

According to a fourth aspect of the present invention, there is provided a program executable by a computer, and the execution of the program by the computer displays (a) a graphic indicating the size of an acoustic parameter on the display screen. And (b) changing the size of the parameter and the figure in response to a pinch-in and pinch-out operation on a touch panel provided on the display screen. And (b) changing the size of the sound field level and the size of the figure in response to the operation of the pinch-in and the pinch-out. In the step (b), in response to an operation of moving a finger from one outside of the figure to the other to the touch panel, Separated into shape, each of the two geometries after separating, indicating the size of the parameter for the acoustic.

According to invention of Claim 1 thru | or 4 , the magnitude | size of the parameter for sound can be changed by operation of the pinch in and pinch out to a touch panel, and the magnitude | size after the change can be confirmed with a figure. For this reason, the user can intuitively change the size of the acoustic parameter.

In particular, according to the invention of claim 2 , the user can easily change the size of the acoustic parameter even during a relatively short period such as waiting for a signal.

FIG. 1 is a diagram illustrating a configuration of an acoustic device. FIG. 2 is a diagram illustrating an example of an equalizer curve. FIG. 3 is a diagram showing display contents for changing the band curve. FIG. 4 is a diagram for explaining operations of pinch-in and pinch-out. FIG. 5 is a diagram for explaining an operation for changing the magnitude of the “Q value”. FIG. 6 is a diagram for explaining an operation for changing the magnitude of the “amplification degree”. FIG. 7 is a diagram illustrating an operation for changing the magnitude of the “center frequency”. FIG. 8 is a diagram for explaining an operation for changing the magnitude of “level”. FIG. 9 is a diagram showing a flow of processing for changing the size of a parameter. FIG. 10 is a diagram illustrating an operation for changing the size of the “slope”. FIG. 11 is a diagram illustrating an operation for changing the magnitude of the “cutoff frequency”. FIG. 12 is a diagram illustrating an operation for changing the size of “center width”. FIG. 13 is a diagram illustrating an operation for changing the magnitude of the “delay time”. FIG. 14 is a diagram for explaining an operation for changing the magnitude of the “change speed”. FIG. 15 is a diagram for explaining an operation for changing the magnitude of the “target level”. FIG. 16 is a diagram illustrating an operation for changing the magnitude of the “sound field level”. FIG. 17 is a diagram illustrating an operation for changing the size of the “sound image coordinates”. FIG. 18 is a diagram for explaining an operation for separating a region where a sound image is localized. FIG. 19 is a diagram illustrating an operation for changing the size of a character parameter. FIG. 20 is a diagram illustrating an operation for changing the type of character parameter.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1. First Embodiment>
<1-1. Configuration>
FIG. 1 is a diagram illustrating a configuration of an acoustic device 1 according to the present embodiment. The acoustic device 1 is, for example, an in-vehicle device (car audio device) mounted on a vehicle such as an automobile. The sound device 1 is provided in the vehicle interior of the vehicle, reproduces sound based on the recorded contents of the disk 8, and outputs the sound to the vehicle interior via a plurality of speakers 21 provided in the vehicle interior.

  The acoustic device 1 includes a control unit 11, a sound processing unit 12, a disk reading unit 13, a storage unit 14, a display 15, and a touch panel 16.

  The audio processing unit 12 is a dedicated processor (hardware circuit) called DSP (Digital Signal Processor) for the purpose of performing signal processing on an audio signal at high speed. The sound processing unit 12 can change the sound quality of the sound reproduced by the acoustic device 1 by executing various signal processes on the sound signal. The audio processing unit 12 has, for example, an equalizer function that changes the frequency characteristics of the audio signal. The audio processing unit 12 outputs the processed audio signal to the speaker 21. Thereby, the sound whose sound quality has been adjusted is output from the speaker 21.

  The disk reading unit 13 is a reading device for a disk 8 such as a CD or a DVD. The disk reading unit 13 acquires the recorded content of the disk 8 and outputs an audio signal indicating the recorded content to the audio processing unit 12.

  The storage unit 14 is, for example, a nonvolatile memory such as a flash memory, and stores various types of information. The storage unit 14 stores audio data 14a, parameters 14b, and a program 14c.

  The audio data 14a is digital data in a predetermined audio compression format such as MP3. An audio signal can be obtained by decoding the audio data 14a. The audio processing unit 12 can perform signal processing on both an audio signal based on the recorded content of the disk 8 and an audio signal based on the audio data 14a stored in the storage unit 14. That is, the acoustic device 1 can reproduce both the sound based on the disk 8 and the sound based on the audio data 14a. The user instructs which sound the acoustic device 1 plays.

  The parameter 14b is an acoustic parameter used by the sound processing unit 12 for signal processing. The parameter 14b includes, for example, “amplification” and “Q value” of each band in the equalizer function. The audio processing unit 12 executes various signal processes on the audio signal based on the parameter 14b. Therefore, the sound quality of the sound reproduced by the acoustic device 1 is defined by the parameter 14b.

  The display 15 is a thin display device including a liquid crystal panel, for example. The display 15 displays various information according to instructions from the control unit 11. The acoustic device 1 is arranged on an instrument panel or the like in the vehicle cabin so that the display screen of the display 15 can be visually recognized by the user.

  The touch panel 16 is an input device that is operated by a user directly touching with a finger. The touch panel 16 is provided so as to overlap the display screen of the display 15. The touch panel 16 employs a multi-touch method that can be operated by simultaneously touching a plurality of points. Therefore, the user can perform operations on the touch panel 16 using a plurality of fingers such as pinch-in and pinch-out. When the user operates the touch panel 16, a signal indicating the operated point is input to the control unit 11.

  The control unit 11 is a microcomputer that comprehensively controls the entire audio device 1. The control unit 11 includes a CPU, a RAM, a ROM, and the like. Various functions of the control unit 11 are realized by the CPU performing arithmetic processing according to the program 14c stored in the storage unit 14. An operation determination unit 11a, a parameter change unit 11b, and a display control unit 11c illustrated in the drawing are some of the functions of the control unit 11 that are realized by the CPU performing arithmetic processing according to the program 14c.

  When the user operates the touch panel 16, the operation determination unit 11 a determines the operation content of the user based on a signal input from the touch panel 16. The operation determination unit 11a determines whether the user's operation on the touch panel 16 is a tap, a double tap, a drag, a flick, a pinch in, a pinch out, or the like. The operation determination unit 11a also determines the operation direction, the amount of finger movement, and the like when the user operation involves finger movement such as dragging, flicking, pinching in, and pinching out.

  The parameter changing unit 11b changes the size of the acoustic parameter in response to a user operation on the touch panel 16. When changing the parameter size, a graphic indicating the size of the target parameter is displayed on the display screen of the display 15. In such a state, the user can perform various operations for instructing the touch panel 16 to change the parameter size. The parameter changing unit 11b changes the size of the acoustic parameter based on such user operation content.

  The display control unit 11 c controls display contents on the display 15. When changing the size of the parameter, the display control unit 11 c displays a graphic indicating the size of the target parameter on the display screen of the display 15. When the parameter size is changed by the parameter changing unit 11b, the display control unit 11c changes the graphic displayed on the display 15 according to the changed parameter size.

<1-2. Overview of equalizer function>
Next, an overview of the equalizer function of the audio processing unit 12 will be described. The equalizer function is a function that changes the frequency characteristics of the audio signal. By using the equalizer function, it is possible to emphasize or weaken a specific frequency band of the audio signal. Such an equalizer function is used for sound quality improvement and active sound creation.

  FIG. 2 is a diagram illustrating an example of an equalizer curve Wa used in the equalizer function. In the figure, the horizontal axis indicates the frequency (Hz), and the vertical axis indicates the gain (dB). The equalizer function of the sound processing unit 12 adjusts the volume of each frequency of the sound signal according to the gain indicated by the equalizer curve Wa.

  In the equalizer function of the present embodiment, seven bands (bands) are set. A band curve Wb is set for each of these seven bands. The gain indicated by the equalizer curve Wa is obtained by adding all the gains indicated by the band curves Wb of these seven bands.

  The band curve Wb of each band is a curve having a mountain-like shape (similar to a Gaussian curve) spreading left and right around a certain frequency. The shape and position of the band curve Wb are defined by parameters such as “amplification degree (gain)” and “Q value” of the band. In the equalizer function of the audio device 1, the shape and position of the band curve Wb of each band can be changed by changing the size of parameters such as “amplification” and “Q value” for each band. Yes.

<1-3. Changing the band curve>
Next, an operation for changing the band curve Wb of each band will be described. The operation of changing the band curve Wb of each band corresponds to the operation of changing the parameter size of each band. FIG. 3 is a diagram showing the display contents of the display screen 15a of the display 15 for changing the band curve Wb of one band. The display content shown in FIG. 3 is displayed after the user performs an operation of selecting one band to be changed from the seven bands in a scene where the setting of the equalizer function is changed. Hereinafter, one band to be changed is referred to as a “target band”.

  As shown in the figure, the band curve Wb of the band of interest and the completion button B are displayed on the display screen 15a. The horizontal axis displayed on the display screen 15a indicates the frequency (Hz), and the vertical axis indicates the gain (dB).

  The center frequency (80 Hz in the figure) of the band curve Wb indicates the size of the “center frequency” of the band of interest. The height of the peak of the band curve Wb (the height at the center frequency) indicates the “amplification degree” of the band of interest. The sharpness of the peak of the band curve Wb indicates the “Q value” of the band of interest. The sharper the peak of the band curve Wb (the narrower the band curve Wb), the greater the “Q value”. That is, the band curve Wb can be said to be a figure showing the magnitudes of the “center frequency”, “amplification”, and “Q value” of the band of interest.

  The user can change the shape and position of the band curve Wb by performing an operation on the touch panel 16 provided so as to overlap the display screen 15a while referring to the display screen 15a. As described above, since the touch panel 16 employs a multi-touch method, the user can perform operations using a plurality of fingers such as pinch-in and pinch-out.

  As shown in FIG. 4, pinch out (pinch open) is an operation of increasing the interval between fingers while touching the touch panel 16 with two fingers F. Pinch-in (pinch close) is an operation of narrowing the interval between fingers while touching the touch panel 16 with two fingers F.

  As shown in FIG. 5, when the pinch-in operation and the pinch-out operation are performed in the horizontal direction on the display screen 15a, the peak sharpness of the band curve Wb can be changed. Thereby, the “Q value” of the band of interest can be changed. Specifically, as shown on the lower side of FIG. 5, when a horizontal pinch-out operation is performed on the display screen 15 a, the width of the band curve Wb widens and the peak sharpness becomes dull. Thereby, the “Q value” of the band of interest can be reduced. Further, as shown in the upper side of FIG. 5, when a pinch-in operation in the horizontal direction of the display screen 15 a is performed, the width of the band curve Wb becomes narrow and the peak sharpness becomes sharp. Thereby, the “Q value” of the band of interest can be increased.

  Also, as shown in FIG. 6, when the pinch-in and pinch-out operations are performed in the vertical direction on the display screen 15a, the peak height of the band curve Wb can be changed. Thereby, the “amplification degree” of the band of interest can be changed. Specifically, as shown in the lower side of FIG. 6, when the pinch-out operation in the vertical direction of the display screen 15 a is performed, the peak height of the band curve Wb increases, and the “amplification” of the band of interest The degree can be increased. Further, as shown in the upper side of FIG. 6, when the pinch-in operation in the vertical direction of the display screen 15a is performed, the peak height of the band curve Wb is lowered, and the “amplification” of the band of interest is reduced. be able to.

  The drag is an operation of moving a finger in an arbitrary direction while touching the touch panel 16 as it is. The flick is an operation of moving the finger in any direction after touching the touch panel 16.

  As shown in FIG. 7, when a horizontal drag or flick operation is performed on the display screen 15a, the position of the band curve Wb can be moved left and right. Thereby, the “center frequency” of the band curve Wb can be changed. Specifically, as shown in the lower side of FIG. 7, when a rightward drag or flick operation is performed, the band curve Wb moves to the right side, and the “center frequency” can be increased. Further, as shown in the upper side of FIG. 7, when a drag or flick operation in the left direction is performed, the band curve Wb moves to the left side, and the “center frequency” can be reduced.

  Further, as shown in FIG. 8, when a vertical drag or flick operation is performed on the display screen 15a, the position of the band curve Wb can be moved up and down. Thereby, the “level” of the band of interest can be changed. Specifically, as shown in the lower side of FIG. 8, when a downward drag or flick operation is performed, the band curve Wb moves downward, and the “level” can be reduced. Further, as shown in the upper side of FIG. 8, when an upward drag or flick operation is performed, the band curve Wb moves upward and the “level” can be increased.

  Thus, in the acoustic device 1, the shape and position of the band curve Wb can be changed by an operation on the touch panel 16 including pinch-in and pinch-out. That is, the size of the acoustic parameter can be changed by the pinch-in and pinch-out operations, and the changed parameter size can be confirmed by the figure (band curve Wb). For this reason, the user can intuitively change the size of the acoustic parameter.

  Also, “Pinch-in and pinch-out operations in horizontal direction”, “Pinch-in and pinch-out operations in vertical direction”, “Drag and flick operations in horizontal direction”, and “Drag and flick in vertical direction” Different parameters can be changed by “operation”. Therefore, the user can intuitively change four different acoustic parameters.

<1-4. Flow of processing>
Next, the flow of processing when changing acoustic parameters will be described. FIG. 9 is a diagram showing a flow of processing when changing the parameter size of the band of interest. This process is executed after the user performs an operation of selecting one band (a band of interest) from the seven bands in a scene where the setting of the equalizer function is changed.

  First, the parameter changing unit 11b reads a part of the parameters 14b stored in the storage unit 14 (step S11). The parameters read in this way include parameters of the band of interest such as “center frequency”, “amplification”, and “Q value”.

  Next, the display control unit 11c displays a band curve Wb, which is a graphic indicating the size of the parameter, on the display 15 in accordance with the read parameter of the target band (step S12). Thereby, the display content as shown in FIG. 3 is displayed on the display screen 15 a of the display 15.

  Next, the acoustic device 1 enters a state of waiting for a user operation on the touch panel 16 (step S13). When the user performs an operation on the touch panel 16, the operation determination unit 11a determines the content of the user operation based on a signal input from the touch panel 16 (step S14). The operation determination unit 11a determines whether the user's operation on the touch panel 16 is tap, drag, flick, pinch-in, pinch-out, or the like.

  Furthermore, the operation determination part 11a determines the point which the user touched, when a user's operation is a tap. In addition, when the user's operation is drag, flick, pinch in, or pinch out, the operation determination unit 11a determines the operation direction and the amount of movement of the finger along with the point touched by the user.

  If the user operation is not an operation of tapping the completion button B (No in step S15), the parameter changing unit 11b changes the parameter size of the band of interest in accordance with the user operation (step S16). .

  Specifically, when the user's operation is a pinch-in or pinch-out in the horizontal direction, the parameter change unit 11b changes the “Q value” of the band of interest. At this time, the change amount of the “Q value” is an amount corresponding to the movement amount of the finger. When the user's operation is a pinch-in or pinch-out in the vertical direction, the parameter changing unit 11b changes the “amplification degree” of the band of interest. At this time, the change amount of the “amplification degree” is an amount corresponding to the movement amount of the finger.

  When the user's operation is dragging or flicking in the horizontal direction, the parameter changing unit 11b changes the size of the “center frequency” of the band of interest. At this time, the change amount of the “center frequency” is an amount corresponding to the movement amount of the finger. When the user's operation is dragging or flicking in the vertical direction, the parameter changing unit 11b changes the “level” size of the band of interest. At this time, the amount of change of “level” is an amount corresponding to the amount of finger movement.

  When the size of the parameter of the target band is changed in this way, the changed parameter is reflected in the actual signal processing (step S17). The parameter changing unit 11b inputs the changed parameter to the voice processing unit 12. Then, the audio processing unit 12 performs signal processing on the audio signal using the input changed parameter. As a result, the sound device 1 reproduces the sound having the sound quality affected by the changed parameter. The user can confirm the result of the parameter change by listening to the reproduced sound.

  At the same time, the display control unit 11c changes the band curve Wb, which is a graphic indicating the size of the parameter, according to the changed parameter size (step S18). The display control unit 11 c causes the display screen 15 a of the display 15 to display the band curve Wb whose shape or position has been changed so as to indicate the size of the parameter after the change. By visually recognizing the band curve Wb displayed in this way, the user can intuitively grasp the size of the parameter after the change.

  When the band curve Wb is thus changed, the process returns to step S13. The acoustic device 1 again enters a state of waiting for the user's operation on the touch panel 16 (step S13). When the user further performs an operation for changing the parameter, the parameter changing unit 11b changes the parameter of the band of interest in response to the user's operation in the same manner as described above.

  After the parameter of the target band is changed in this way, when the user performs an operation of tapping the completion button B (Yes in step S15), the parameter changing unit 11b sets the changed parameter to the parameter 14b. As a part, it is stored in the storage unit 14 (step S19).

  As described above, the acoustic device 1 includes the display 15 that displays the graphic indicating the size of the acoustic parameter on the display screen 15a, and the display screen 15a of the display 15 is provided with the touch panel 16. . The parameter changing unit 11b of the acoustic device 1 changes the size of the acoustic parameter in response to pinch-in and pinch-out operations on the touch panel 16. And the display control part 11c changes a figure according to the magnitude | size of the parameter after a change.

  Thus, in the acoustic device 1, the size of the acoustic parameters can be changed by pinch-in and pinch-out operations on the touch panel 16, and the size after the change can be confirmed by a figure. For this reason, the user can intuitively change the size of the acoustic parameter. As a result, the user can easily change the size of the acoustic parameter even during a relatively short period such as when the vehicle is waiting for a signal.

  Also, different acoustic parameters can be changed between the pinch-in and pinch-out operations in the horizontal direction and the pinch-in and pinch-out operations in the vertical direction.

  Also, different acoustic parameters can be changed between pinch-in and pinch-out operations and drag or flick operations.

<2. Second Embodiment>
Next, a second embodiment will be described. The acoustic device 1 according to the first embodiment changes the equalizer function parameters as acoustic parameters. Of course, the acoustic parameter to be changed by the acoustic device 1 may be other than the equalizer function. For this reason, in the following embodiments, an aspect in which the size of the acoustic parameter other than the equalizer function is changed will be described. Since the configuration and processing of the acoustic device 1 of the subsequent embodiments are substantially the same as those of the first embodiment, the following embodiments will be described focusing on the differences from the first embodiment. .

  The sound processing unit 12 of the acoustic device 1 according to the second embodiment has a crossover (X-OVER) function. The crossover function is a function of adjusting the frequency band reproduced by each of the subwoofer and the other speakers. The acoustic device 1 according to the second embodiment can change the parameters of the crossover function.

  10 and 11 are diagrams showing display contents on the display screen 15a of the display 15 for changing the size of the parameter of the crossover function. On the display screen 15a, a graphic G1 indicating the size of the parameter of the crossover function is displayed. The horizontal axis displayed on the display screen 15a indicates the frequency (Hz), and the vertical axis indicates the level.

  This figure G1 shows the size of “cutoff frequency” indicating the frequency to be divided and the size of “slope” indicating the degree of sound mixing. The frequency at the intersection CP of two oblique lines intersecting each other of the figure G1 indicates the magnitude of the “cutoff frequency”. In addition, the slopes of the two diagonal lines of the figure G1 indicate the magnitude of the “slope”. The greater the “slope” (the steeper slope), the less the sound that the subwoofer and other speakers play.

  As shown in FIG. 10, when a pinch-in operation and a pinch-out operation are performed in the horizontal direction on the display screen 15a, the inclinations of two oblique lines of the figure G1 can be changed. Thereby, the “slope” can be changed. Specifically, as shown in the lower side of FIG. 10, when a pinch-out operation in the horizontal direction of the display screen 15 a is performed, the slopes of the two oblique lines of the graphic G 1 become gentle and “slope” is set. Can be small. Further, as shown in the upper side of FIG. 10, when a pinch-in operation in the horizontal direction of the display screen 15 a is performed, the slopes of the two diagonal lines of the graphic G <b> 1 become steep and the “slope” can be increased. .

  Also, as shown in FIG. 11, when a dragging or flicking operation in the horizontal direction on the display screen 15a is performed, the position of the intersection CP of two diagonal lines of the figure G1 can be moved to the left and right. Thereby, the “cut-off frequency” can be changed. Specifically, as shown in the lower side of FIG. 11, when a rightward drag or flick operation is performed, the intersection CP moves to the right side, and the “cutoff frequency” can be increased. Further, as shown in the upper side of FIG. 11, when a drag or flick operation in the left direction is performed, the intersection CP moves to the left, and the “cutoff frequency” can be reduced.

  As described above, in the acoustic device 1 according to the second embodiment, the user can intuitively change the size of the parameter of the crossover function.

<3. Third Embodiment>
Next, a third embodiment will be described. The sound processing unit 12 of the acoustic device 1 according to the third embodiment has a surround function. The acoustic device 1 according to the third embodiment can change the “center width (CENTER WIDTH)” of the parameters of the surround function. “Center with” is a parameter indicating the degree to which the sound in the frequency band to be reproduced by the center speaker is distributed to the left and right front speakers. The larger “Center With”, the more sound is distributed to the left and right front speakers.

  FIG. 12 is a diagram showing the display contents of the display screen 15a of the display 15 for changing the size of “center width”. On the display screen 15a, a substantially elliptic figure G2 indicating the size of the “center width” is displayed together with a figure G9 indicating the interior of the vehicle.

  As shown in FIG. 12, when the pinch-in and pinch-out operations are performed in the horizontal direction on the display screen 15a, the width of the graphic G2 can be changed. Thereby, the “center width” can be changed. Specifically, as shown in the lower side of FIG. 12, when a pinch-out operation in the horizontal direction of the display screen 15 a is performed, the width of the graphic G <b> 2 is widened and “center width” can be increased. . Also, as shown in the upper side of FIG. 12, when a pinch-in operation in the horizontal direction of the display screen 15a is performed, the width of the graphic G2 becomes narrow, and the “center width” can be reduced.

  As described above, in the audio device 1 according to the third embodiment, the user can intuitively change the size of the “center width”.

<4. Fourth Embodiment>
Next, a fourth embodiment will be described. The sound processing unit 12 of the acoustic device 1 according to the fourth embodiment has a time alignment function. The time alignment function is a function for adjusting the delay time for each speaker. The acoustic device 1 according to the fourth embodiment can change the “delay time” for each speaker, which is a parameter of the time alignment function.

  FIG. 13 is a diagram showing the display content of the display screen 15a of the display 15 for changing the size of the “delay time” for each speaker. On the display screen 15a, a figure G9 indicating the interior of the vehicle and four substantially circular figures G3 indicating the size of the “delay time” are displayed. These four figures G3 correspond to the four speakers, the left and right front speakers and the left and right rear speakers, respectively.

  As shown in FIG. 13, when a pinch-in and pinch-out operation is performed in the vicinity of an arbitrary graphic G3, the size of the graphic G3 can be changed. Thereby, the “delay time” of the speaker corresponding to the figure G3 can be changed. As the graphic G3 to be changed, the graphic closest to the point first touched by the user's finger is selected. In the example of FIG. 13, the graphic G3 corresponding to the right front speaker is the object to be changed. Therefore, in this case, the “delay time” of the right front speaker is changed.

  Making the figure G3 smaller gives the user the impression of separating the speakers. For this reason, in the present embodiment, the “delay time” is increased as the figure G3 is reduced. As shown on the lower side of FIG. 13, when the pinch-in operation is performed, the figure G3 becomes smaller, and the “delay time” can be increased. Further, as shown in the upper side of FIG. 13, when a pinch-out operation is performed, the figure G <b> 2 becomes larger and the “delay time” can be reduced.

  As described above, in the acoustic device 1 according to the fourth embodiment, the user can intuitively change the size of the “delay time” for each speaker.

<5. Fifth embodiment>
Next, a fifth embodiment will be described. The sound processing unit 12 of the acoustic device 1 according to the fifth embodiment has an automatic sound volume correction function. The automatic volume correction function is a function that adjusts the volume to a certain level when playing music recorded in different environments. The acoustic device 1 of the fifth embodiment can change the parameters of the automatic volume correction function.

  14 and 15 are diagrams showing the display contents of the display screen 15a of the display 15 for changing the parameter size of the automatic volume correction function. On the display screen 15a, a graphic G4 indicating the parameter size of the automatic volume correction function is displayed. The horizontal axis displayed on the display screen 15a indicates time, and the vertical axis indicates level.

  This figure G4 shows the magnitude of “target level” indicating the level of the volume to be targeted and the magnitude of “change speed” indicating the speed at which the volume is changed. The height at the right end of the figure G4 indicates the size (Hi, Mid, Low) of the “target level”. Further, the slope of the oblique line of the figure G4 indicates the magnitude of the “change speed”. The larger the “change speed” (the steeper slope), the faster the volume is corrected in accordance with the change in the volume of the music.

  As shown in FIG. 14, when a pinch-in operation and a pinch-out operation are performed in the horizontal direction on the display screen 15a, the slope of the oblique line of the figure G4 can be changed. Thereby, the “change speed” can be changed. Specifically, as shown in the lower side of FIG. 14, when a pinch-out operation in the horizontal direction of the display screen 15 a is performed, the slope of the diagonal line of the graphic G 4 becomes gentle, and the “change speed” is reduced. can do. Further, as shown in the upper side of FIG. 14, when a pinch-in operation in the horizontal direction of the display screen 15 a is performed, the slope of the oblique line of the graphic G <b> 4 becomes steep and the “change speed” can be increased.

  Also, as shown in FIG. 15, when a vertical drag or flick operation is performed on the display screen 15a, the right end position of the figure G4 can be moved up and down. Thereby, the “target level” can be changed. Specifically, as shown in the lower side of FIG. 15, when a downward drag or flick operation is performed, the right end of the figure G4 moves downward, and the “target level” can be reduced. . Further, as shown in the upper side of FIG. 15, when an upward drag or flick operation is performed, the right end of the graphic G4 moves upward, and the “target level” can be increased.

  As described above, in the acoustic device 1 according to the fifth embodiment, the user can intuitively change the parameter size of the automatic volume correction function.

<6. Sixth Embodiment>
Next, a sixth embodiment will be described. The sound processing unit 12 of the acoustic device 1 according to the sixth embodiment has a sound image adjustment function. The sound image adjustment function is a function for adjusting a region where the sound image is localized. The acoustic device 1 according to the sixth embodiment can change the parameters of the sound image adjustment function.

  16 and 17 are diagrams showing display contents on the display screen 15a of the display 15 for changing the size of the parameter of the sound image adjustment function. On the display screen 15a, a graphic G5 indicating a region where the sound image is localized is displayed together with a graphic G9 indicating the interior of the vehicle.

  This figure G5 shows the size of two “sound image coordinates” which are two-dimensional coordinates indicating the position where the sound image is localized, and the size of “sound field level” indicating the sense of sound spread. The position of the figure G5 indicates the size of two “sound image coordinates” in the vertical and horizontal directions. The size of the figure G5 indicates the size of the “sound field level”.

  As shown in FIG. 16, when a pinch-in and pinch-out operation is performed, the size of the figure G5 can be changed. Thereby, the “sound field level” can be changed. Specifically, as shown in the lower side of FIG. 16, when a horizontal pinch-out operation is performed on the display screen 15a, the size of the figure G5 increases and the “sound field level” increases. be able to. In addition, as shown in the upper side of FIG. 16, when a pinch-in operation in the horizontal direction of the display screen 15 a is performed, the size of the figure G <b> 5 is reduced and the “sound field level” can be reduced.

  Also, as shown in FIG. 17, when a drag operation is performed on the graphic G5, the graphic G5 can be moved to a desired position. Thereby, two “sound image coordinates” can be changed.

  As described above, in the acoustic device 1 according to the sixth embodiment, the user can intuitively change the parameter size of the sound image adjustment function.

  In the example of FIGS. 16 and 17, only one area is used to localize the sound image, but two different areas may be set for the front seat and the rear seat. In this case, a graphic indicating a region where the sound image is localized on the front seat and a graphic indicating the region where the sound image is localized on the rear seat may be individually displayed.

  Also, as shown in FIG. 18, when an operation of moving the finger F (operation to cut the graphic G5) is performed while touching the touch panel 16 from one outside of the graphic G5 to the other external, the graphic G5 May be separated into two figures G5f and G5r. In this case, only one region for sound image localization can be set while only one graphic G5 is displayed, and two regions for sound image localization can be set after separation into two graphics G5f and G5r. Become.

<7. Seventh Embodiment>
Next, a seventh embodiment will be described. The acoustic device 1 according to the seventh embodiment can change the parameter size of the sound image adjustment function as in the sixth embodiment. The acoustic device 1 according to the seventh embodiment can further change the size of acoustic parameters other than the sound image adjustment function on the display screen 15a for changing the parameters of the sound image adjustment function.

  19 and 20 are diagrams showing display contents on the display screen 15a of the display 15 for changing the parameter size of the sound image adjustment function. On the display screen 15a, a graphic G6 indicating a region where the sound image is localized is displayed together with a graphic G9 indicating the interior of the vehicle.

  The figure G6 shows two “sound image coordinates” and “sound field level” as in the figure G5 of the sixth embodiment. Similarly to the sixth embodiment, when the pinch-in and pinch-out operations are performed, the size of the graphic G6 can be changed, and when the drag operation is performed, the graphic G6 can be moved to a desired position.

  In addition, in the graphic G6, the size of the acoustic parameter other than the sound image adjustment function is indicated by characters. Hereinafter, parameters indicated by characters are referred to as “character parameters”. In the example of FIG. 19, “volume” is shown as a character parameter.

  As shown in FIG. 19, when the character parameter is flicked in the vertical direction of the display screen 15a, the size of the character parameter can be changed. Specifically, as shown on the lower side of FIG. 19, the character parameter can be reduced when the downward flick operation is performed. In the example of FIG. 19, the “volume” can be reduced. Further, as shown in the upper side of FIG. 19, when an upward flick operation is performed, the character parameter can be increased. In the example of FIG. 19, the “volume” can be increased.

  As shown in FIG. 20, when the character parameter is flicked in the horizontal direction on the display screen 15a, the type of the character parameter can be changed. In the example of FIG. 20, when the flick operation in the right direction is performed, the type of the character parameter can be changed from “volume” to “equalizer preset”. After the character parameter type is changed in this way, the size of the changed type character parameter can be changed by a flick operation in the vertical direction.

  As described above, in the acoustic device 1 according to the seventh embodiment, the user also refers to the same display screen 15 a while setting the size of the acoustic parameters other than the sound image adjustment function to the touch panel 16 along with the parameters of the sound image adjustment function. It can be changed by the operation.

<8. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible. Below, such a modification is demonstrated. All the forms including the above-described embodiment and the form described below can be appropriately combined.

  In the above embodiment, when an operation is performed on the touch panel 16, the size of the parameter is first changed, and then the figure is changed so as to indicate the size of the parameter after the change. On the other hand, when an operation is performed on the touch panel 16, the figure may be first changed, and the parameter size may be changed according to the changed figure.

  In the above embodiment, an in-vehicle device has been described as an example of the acoustic device. However, the acoustic device may be a home acoustic device, a portable acoustic device, or the like. The acoustic device may be a computer that functions as an acoustic device by executing a program. Such computers include portable devices such as mobile phones and smartphones.

  In the above embodiment, the user can select one band from a plurality of bands and change the shape and position of the band curve Wb of the band by operating the touch panel 16. On the other hand, the shape of the equalizer curve Wa in the entire region as shown in FIG. 2 can be directly changed by an operation on the touch panel 16, and the selection of the band may be unnecessary. Even in this case, the user can intuitively change the size of the acoustic parameter. In this case, for example, when the user performs a pinch-in and pinch-out operation, the parameter changing unit 11b identifies the band closest to the two points where the user's finger first contacts, and the “amplification degree” of the band "Or" Q value "(band curve shape) is changed according to the pinch-in and pinch-out operations. When the user performs a drag or flick operation, the parameter changing unit 11b identifies the band closest to the point where the user's finger first touched, and the “center frequency” or “level” ( Change the position of the band curve. In this case, it is desirable to set bands with relatively fine frequency intervals.

  Further, in the above-described embodiment, it has been described that various functions are realized in software by the arithmetic processing of the CPU according to the program. However, some of these functions are realized by an electrical hardware circuit. Also good. Conversely, some of the functions realized by the hardware circuit may be realized by software.

DESCRIPTION OF SYMBOLS 1 Sound apparatus 11a Operation determination part 11b Parameter change part 11c Display control part 12 Audio | voice processing part 15 Display 15a Display screen 16 Touch panel

Claims (4)

An audio device,
Display means for displaying on the display screen a graphic indicating the size of the acoustic parameter;
A touch panel provided on the display screen;
In response to an operation of pinch-in and pinch-out to the touch panel, the size of the parameter, and a changing means for changing the figure,
With
The parameters include a sound field level indicating a sense of sound spread,
The changing means changes the size of the sound field level and the size of the figure in response to the operation of the pinch-in and the pinch-out ,
In response to an operation of moving a finger from one outside of the figure to the other outside of the figure on the touch panel, the changing unit separates the figure into two figures,
Each of the two figures after being separated indicates the size of the acoustic parameter . The acoustic device according to claim 1,
The acoustic device is an in-vehicle device mounted on a vehicle . A parameter changing method for changing acoustic parameters,
(A) displaying a graphic indicating the size of the acoustic parameter on the display screen;
(B) in response to a pinch-in and pinch-out operation on a touch panel provided on the display screen, changing the size of the parameter and the graphic;
With
The parameters include a sound field level indicating a sense of sound spread,
The step (b) changes the size of the sound field level and the size of the figure in response to the operations of the pinch-in and the pinch-out,
In the step (b), in response to an operation of moving a finger from one outside of the figure to the other to the touch panel, the figure is separated into two figures,
Each of the two figures after separation indicates the size of the acoustic parameter. A program executable by a computer,
Execution of the program by the computer causes the computer to
(A) displaying a graphic indicating the size of the acoustic parameter on the display screen;
(B) in response to a pinch-in and pinch-out operation on a touch panel provided on the display screen, changing the size of the parameter and the graphic;
And execute
The parameters include a sound field level indicating a sense of sound spread,
The step (b) changes the size of the sound field level and the size of the figure in response to the operations of the pinch-in and the pinch-out,
In the step (b), in response to an operation of moving a finger from one outside of the figure to the other to the touch panel, the figure is separated into two figures,
Each of the two figures after separation indicates a size of the acoustic parameter.

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