JP3301458B2 - Sound image moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for moving a sound image, and more particularly to a sound image moving apparatus capable of reproducing a moving state of a sound image specified in advance by manual operation in an automatic operation state.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned sound image moving device, there has been one shown in FIGS. 2 to 4, for example. this is,
As shown in FIG. 2, a sound image is moved in a surround playback device. The surround playback device includes a left speaker 4 provided in the listening room 2, a left input signal, a right speaker 6 provided with a right input signal, and a center speaker 8 provided in the middle of the left and right speakers 4, 6 with left and right speakers. The mixed signal of the input signal is also supplied to a surround speaker 10 provided so as to face the center speaker 8, similarly to the left and right input signals, and is supplied to these speakers 4, 6, 8, and 10. Change the signal level,
Move the sound image.

Therefore, the left input signal supplied to the input terminal 12 and the right input signal supplied to the input terminal 14 are converted into digital signals by A / D converters 16 and 18, respectively, and supplied to the DSP 20. In FIG. 2, DSP2
The functions performed by 0 are shown in blocks. That is, A /
The level of the left input signal digitized by the D converter 16 is adjusted by the variable resistor 22, and then amplified by the amplifier 24.
The signal is converted into an analog signal by the / A converter 26 and supplied to the left speaker 4. Similarly, the level of the right input signal digitized by the A / D converter 18 is adjusted by a variable resistor 28, then amplified by an amplifier 30, converted to an analog signal by a D / A converter 32, and converted to a right speaker. 6

[0004] The digitized left and right input signals are
After the addition by the adder 34 in the DSP 20, the level is adjusted by the variable resistor 36, amplified by the amplifier 38, converted to an analog signal by the D / A converter 40, and supplied to the central speaker 8. Similarly, the output of the adder 34 is adjusted in level by a variable resistor 42,
After amplification in, the signal is converted into an analog signal by the D / A converter 46,
It is supplied to the surround speakers 10.

The variable resistors 22 and 28 are linked, and the level of the signal output from the variable resistor 22 is, for example, K1
When (0 ≦ K1 ≦ 1), the level of the signal output from the variable resistor 28 is (1−K1). Similarly, the variable resistors 36 and 42 are linked, and when the level of the signal output from the variable resistor 36 is K2 (0 ≦ K2 ≦ 1),
The level of the signal output from the variable resistor 42 is (1-K
2).

[0006] Such variable resistors 22, 28, 3
The adjustment of 6, 42 is performed by operating the joystick 48. For example, the value of K1 changes according to the operation of the joystick 48 in the left-right direction, and the value of K2 changes according to the operation in the front-back direction.

In the manual operation state, an operation signal generated by operating the joystick is supplied to the DSP 20 via the changeover switch 50 and also to the CPU 52, and is stored in a memory (not shown) as a history of the operation of the joystick 50. (See FIG. 3).

In the automatic operation state, the changeover switch 50
Is switched, the operation history read from the memory by the CPU 52 is supplied to the DSP 20, and the sound image is moved according to the previously performed operation. At this time, the motor 54 is operated according to the read operation history, and the joystick 48 is operated according to the previous operation (see FIG. 4).

Such an automatic operation is used, for example, in a stage performance or the like. Further, in a state where the moving state of the sound image is desired to be corrected while such an automatic operation is being performed, when the joystick 50 is touched, the changeover switch 50 is automatically switched to the manual operation state.
Thereafter, a manual operation is performed. At this time, if the joystick 48 does not move at all and remains at the original position, the position of the sound image moves to the original position as soon as the joystick 48 is touched. The joystick 50 is moved by the motor 54 according to the history that has been set. This way,
Even if the user switches to manual operation by touching the joystick 50, correction from the sound image position immediately before switching to manual operation becomes possible.

[0010]

However, in such an apparatus, the joystick 50 is moved by the motor 54 in accordance with the movement of the sound image. Also, the joystick 50
Automatically moves, it is difficult to catch the moving joystick 50 with a finger in order to switch to the manual operation.
The 0 hit the finger, sometimes damaging the finger.

[0011]

According to a first aspect of the present invention, there is provided a sound image moving means for moving a sound image in accordance with an input sound image moving signal, and an operation within a predetermined time. An operation element that generates an operation change signal according to the direction and the operation amount; a sound image movement signal generation unit that generates the sound image movement signal based on the sequentially generated operation change signal; and stores the generated sound image movement signal. Storage means for supplying the sound image movement signal stored in the storage means to the sound image movement means; and performing the operation while the supply means supplies the sound image movement signal to the sound image movement means. Correction means for correcting the sound image movement signal supplied by the supply means at that time when the control element is operated, based on the operation change signal generated by the control element at that time. It is intended to.

[0012] In a second aspect of the present invention, in the first aspect, means for storing the corrected sound image movement signal in the storage means is provided.

According to a third aspect of the present invention, there is provided a sound image moving means for moving a sound image in accordance with an input sound image moving signal, and an operation element for generating an operation change signal corresponding to an operation direction and an operation amount within a predetermined time. A sound image movement signal updating means for adding the operation change signal to the sound image movement signal in the manual operation state to update the sound image movement signal; and storing each sound image movement signal sequentially updated by the sound image movement signal updating means. Storage means, reading means for sequentially reading the sound image movement signals from the storage means in the automatic operation state, and supplying the sound image movement signals to the sound image movement means; and the manual operation state when the operation element is operated in the automatic operation state And switching means for switching between the two.

[0014]

According to the first aspect, the operation change signal is generated every time the predetermined time elapses according to the operation direction and the operation amount of the operation element within the predetermined time. The sound image movement signal generation means generates a sound image movement signal based on the sequentially generated operation change signals, and stores the sound image movement signal in the storage means and supplies the sound image movement signal to the sound image movement means. Accordingly, the sound image is moved, and the sound image movement signals necessary for the movement are stored. When the supply means supplies the sound image movement signal stored in the storage means to the sound image movement means, the sound image is automatically moved. In this supply state, when the operation element is operated, the correction means corrects the sound image movement signal supplied by the supply means at that time based on the operation change signal generated by the operation element at that time. to correct.

In the second invention, the sound image movement signal corrected as described above is stored in the storage means.
The sound image can be automatically moved based on the corrected sound image movement signal by supplying this to the sound image moving means by the supply means.

According to the third aspect of the invention, the sound image moving means for moving the sound image in accordance with the input sound image movement signal, and the operation change signal is operated in accordance with the operation direction and the operation amount of the operation element within a predetermined time. A child is created. In the manual operation state, the sound image movement signal updating means updates the sound image movement signal by adding the operation change signal from the operator to the sound image movement signal at that time. Each sound image movement signal sequentially updated by the sound image movement signal updating means is stored in the storage means and supplied to the sound image movement means to move the sound image. In the automatic operation state, the above-mentioned sound image movement signals are read out from the storage means by the reading means and supplied to the sound image movement means. When the operator is operated in the automatic operation state, the switching means switches to the manual operation state. As a result, the sound image movement signal is updated again by the updating means in accordance with the operation of the operating element, and the sound image movement signal is manually corrected.

[0017]

This embodiment uses a DSP 20 in the same manner as the conventional one shown in FIG.
The movement of the sound image is performed, and the same parts as those in FIG.

In this embodiment, a track ball 56 is used instead of the joystick. The trackball 56 has a ball therein and generates a pulse according to the rotation of the ball. This pulse is generated in accordance with the component of the rotation of the ball in the x direction (direction along the left and right speakers 4 and 6 in FIG. 2), and the pulse is generated in the y direction of the rotation of the ball (the center and the surround speakers 8 and 10 in FIG. 2).
There are two types that occur depending on the component).
These pulses are generated every time a predetermined angle is rotated in the x direction and a predetermined angle in the y direction, and a positive-phase pulse is generated when the rotation direction is positive, and a negative-phase pulse is generated when the rotation direction is negative. Then, within a predetermined time Δt, how many positive-phase pulses
The amount of change Δx and Δy in the x direction and the y direction is generated depending on whether or not the reverse phase pulse is generated, and is supplied to the CPU 52.

The track ball 56 is provided with a touch sensor 58, which detects that a person has touched the track ball 56 and supplies a detection signal to the CPU 52. The CPU 52 switches the changeover switch 50 in response to the detection signal, and outputs Δx, Δ
The y data is supplied to the accumulating circuit 60, Δx and Δy are respectively accumulated, the positions x and y designated by the trackball 56 are calculated, and supplied to the DSP 20, and the DSP 20 moves the sound image accordingly. . In addition, CPU
The Δx and Δy data supplied to the CPU 52 are also accumulated in the CPU 52 in the same manner as the accumulation circuit 60, and the position designated by the trackball 56 is calculated.
2 is stored in a memory 62 attached to the memory 2.

Therefore, when the trackball 56 is being operated, the accumulation circuit 60
Are sequentially calculated, the sound image is moved to that position, and each of the positions, that is, each position of the sound image, is stored in the memory 62.

When an instruction for the automatic mode is given to the CPU 52, the CPU 52
0, the position of each sound image is read out from the memory 62 in the order stored, and the DSP 20
Supplied to At this time, Δx, Δy are stored in the accumulation circuit 60.
Is not given, the position of each sound image from the CPU 52 is supplied to the DSP 20. Therefore, the sound image moves as specified by the trackball 56 first.

When the sound image is automatically moving in this way, the operator thinks that it is better to correct the position of the sound image, and when the operator touches the trackball 56, the touch sensor 5
8 detects this. Then, the CPU 52 switches the switch 50 to the trackball 56 side. Then, when the trackball 56 is operated to generate the data of Δx and Δy, the data is supplied to the accumulation circuit 60 for x and y.
, And x and y are updated. The updated data x and y are supplied to the DSP 20 to correct the position of the sound image, and thereafter, the sound image is moved in accordance with the operation of the trackball 56. The data of Δx and Δy from the trackball 56 is also supplied to the CPU 52,
The accumulation is performed in the CPU 52 in the same manner as the accumulation circuit 60. Therefore, when the automatic mode is set next time, the sound image automatically moves to each position of the corrected sound image.

In the above embodiment, the sound image is moved two-dimensionally. However, the present invention can be applied to a case where the sound image is moved only between the left and right speakers. In the above embodiment, the trackball 56 is used, but a mouse may be used. In the above embodiment,
Although the changeover switch 50 and the accumulation circuit 60 are used, processing such as accumulation may be performed by the CPU 52 instead.

[0024]

As described above, according to the present invention, an operation element such as a trackball or a mouse is operated by using an operation change signal generated according to an operation direction and an operation amount within a predetermined time. It is configured to correct the sound image movement signal generated when operating the child, so that the sound image can be moved from the sound image position when operating the operation element, and the joystick can be moved as if using a joystick. It is not necessary to move with the movement of, and the configuration can be simplified. In addition, if the corrected sound image movement signal is stored in the storage unit, the sound image can be automatically moved based on the corrected sound image movement signal.

In the manual operation state, an operation change signal generated by an operator such as a trackball or a mouse in accordance with an operation direction and an operation amount within a predetermined time is transmitted to the sound image movement signal updating means by the sound image movement signal updating means. To sequentially update the sound image movement signal, store these sequentially updated sound image movement signals in the storage means, sequentially read out the sound image movement signals from the storage means, supply the read sound image movement signals to the sound image movement means, and When the operating element is operated in the automatic operation state in which the operating element is automatically moved, the switching means switches to the manual operating state, so that the sound image movement signal read at that time is updated by the updating means. Is updated by the operation change signal generated in accordance with the above, and is supplied to the sound image moving means.
Therefore, it is not necessary to move the joystick together with the movement of the sound image as when using a joystick, and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of a sound image moving device according to the present invention.

FIG. 2 is a block diagram of a conventional sound image moving device.

FIG. 3 is a block diagram showing a manual operation state of the sound image moving device of FIG. 2;

FIG. 4 is a block diagram showing an automatic operation state of the sound image moving device of FIG. 2;

[Explanation of symbols]

 Reference Signs List 20 DSP (sound image moving means) 50 Changeover switch (selecting means) 52 CPU (sound image moving signal generating means, supplying means) 56 Trackball (operator) 60 Accumulation circuit (correcting means, sound image moving signal updating means) 62 Memory (storage) means)

Claims (3)

(57) [Claims] 1. A sound image moving means for moving a sound image according to an input sound image moving signal, an operation element for generating an operation change signal according to an operation direction and an operation amount within a predetermined time, and the operation sequentially generated Sound image movement signal generation means for generating the sound image movement signal based on the change signal; storage means for storing the generated sound image movement signal; and supplying the sound image movement signal stored in the storage means to the sound image movement means. Supply means, and when the operation element is operated in a state where the supply means is supplying the sound image movement signal to the sound image movement means, the sound image movement signal supplied by the supply means at that time is transmitted. At this time, a correction means for correcting based on the operation change signal generated by the operation element,
A sound image moving device, comprising: 2. The sound image moving device according to claim 1, wherein
A sound image moving device, further comprising means for storing the corrected sound image moving signal in the storage means. 3. A sound image moving means for moving a sound image in accordance with an input sound image moving signal, an operation element for generating an operation change signal in accordance with an operation direction and an operation amount within a predetermined time, and Sound image movement signal updating means for adding the operation change signal to the sound image movement signal to update the sound image movement signal; storage means for storing each sound image movement signal sequentially updated by the sound image movement signal updating means; Reading means for sequentially reading the sound image movement signals from the storage means and supplying the sound image movement signals to the sound image movement means, and switching means for switching to the manual operation state when the operation element is operated in the automatic operation state. Sound image moving device.