JP3343959B2 - Sound image localization control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound image localization control device, and more particularly, to a sound image localization control device used for an electronic musical instrument or the like and for controlling the sound image localization of an output musical sound.

[0002]

2. Description of the Related Art Conventionally, in an electronic musical instrument or the like, a sound image localization (a position where a sound source is located) is controlled by a sound image localization control device.

[0003] Such an electronic musical instrument outputs generated sound in stereo (two channels), and varies the sound image localization by controlling the output level of each channel. That is, when the output levels of both channels are the same, the sound image localization is centered, and when the output level of the right channel is high and the output level of the left channel is low, the sound image localization is on the right. When the output level of the right channel is lowered and the output level of the left channel is raised, the sound image localization is located on the left.

In recent years, there has been a device which employs a so-called auto pan pot to change the sound image localization, and automatically changes the sound image localization. With this auto pan pot, the output level of each channel is changed, and the sound image localization can be changed in a fixed cycle on a straight line from right to left to right, and so on, or can be changed to draw an arc Let me. This changing form is set in advance and cannot be set freely by the player.

To change the sound image localization using such an auto pan pot, the output level of each channel is changed. As a method of changing the output level,
2. Description of the Related Art Conventionally, there are a type that varies according to an output from an LFO (Low Frequency Oscillator) and a type that varies according to a performance speed.

In an apparatus that changes the output level using an LFO, the output level of an acoustic sound is changed based on a change in a signal generated by the LFO, and the sound image localization is changed right and left and back and forth. In this case, the frequency of the LFO may be adjusted independently from the outside, or adjusted in accordance with the tempo of the music to be played, and the speed of change of the sound image localization may be freely adjusted.

In the case of changing the sound level according to the playing speed, for example, the output level is changed based on the key depression timing, and the sound image localization is changed according to the playing speed.

[0008]

However, in such a conventional sound image localization control device, the sound image localization is performed in a linear or arc shape at a constant period by an auto pan pot or according to a performance speed. Since the sound image localization was changed in accordance with the playing speed and the tempo, the sound image localization was changed in a fixed manner in advance. Is fixed and cannot be freely set by the player, but also has a problem that the change in sound image localization is not interesting.

Therefore, according to the present invention, when the sound image localization is moved along the circumference, the center position and the radius thereof can be easily and easily input, and the sound image localization is centered on the position intended by the player. It is an object of the present invention to provide a sound image localization control device which can be moved on a circle having a radius having an intended length, and which can realize a musically rich and interesting change in sound image localization.

[0010]

According to the above object, according to the sound image localization control device of the present invention, a plane having predetermined two-dimensional coordinates is provided, and data corresponding to coordinates on the plane can be input. Coordinate designation means, and the coordinate designation means
Coordinate storage means for sequentially storing a plurality of coordinate data, before
Coordinates for reading the coordinate data stored in the coordinate storage means
Reading means, length input means capable of inputting length data representing a predetermined length, and read by the coordinate reading means.
Calculating means for sequentially calculating a position on the circumference of a circle having a radius of the length data input by the length input means, with the coordinate data as a center, and a circle calculated by the calculating means .
And localization control means for controlling the localization of the sound image of the acoustic sound generated based on the position on the circumference .

[0011]

Further, for example, as set forth in claim 2 , the sound image localization control device of the present invention further comprises a length storage means for sequentially storing a plurality of length data input by the length input means; Length reading means for reading out the length data stored in the length storing means, wherein the calculating means has a circumference of a circle whose radius is the length data read by the length reading means. This is achieved by sequentially calculating the upper positions.

[0013]

[0014]

According to the above arrangement, data corresponding to the coordinates on the plane is inputted by the coordinate designating means having a plane constituting the predetermined two-dimensional coordinates, and the predetermined length is represented by the length inputting means. Enter the length data. The position on the circumference of a circle whose radius is the length data input by the length input means is sequentially calculated by the calculation means, centering on the coordinate data input by the coordinate designating means. Based on the calculated position data, the localization control means controls the sound image localization of the generated acoustic sound.

Therefore, by inputting the center of the circle to which the sound image localization is moved by the coordinate designating means and inputting the radius of the circle by the length input means, the player intends to change the sound image localization. Easy and easy to specify,
The sound image localization can be changed along the circumference specified by the player. As a result, a musically rich and interesting change in sound image localization can be realized.

Further, a plurality of coordinate data designated by the coordinate designating means are sequentially stored in the coordinate storage means, and the coordinate data stored in the coordinate storage means are read out by the coordinate reading means, and the arithmetic means comprises: The position on the circumference of the circle is sequentially calculated based on the coordinate data read by the coordinate reading means.

Therefore, the center position of the moving circle of the sound image localization can be sequentially changed, and the change of the sound image localization that is more musically rich and interesting can be realized.

Further, a plurality of length data input by the length input means are sequentially stored in the length storage means, and the length data stored in the length storage means is read out by the length reading means. , Calculating means sequentially calculates the position on the circumference of a circle having a radius of the length data read by the length reading means.

Therefore, the radius of the moving circumference of the sound image localization can be sequentially changed, and the change of the sound image localization that is more musically rich and interesting can be realized.

Further, when a touch panel is adopted as the coordinate designating means, coordinate data of a change form of the sound image localization can be easily specified, and the player can easily and easily set the sound image localization intended by the player. Can be.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to embodiments.

FIGS. 1 to 5 are diagrams showing a first embodiment of the sound image localization control device of the present invention.

FIG. 1 is a schematic configuration diagram of an electronic musical instrument 1 to which a sound image localization control device is applied, and the electronic musical instrument 1 has a CPU (Ce).
ntral Processing Unit) 2, ROM (Read Only Memor)
y) 3, a RAM (Random Access Memory) 4, a switch unit 5, a display unit 6, a touch panel 7, a keyboard 8, a sound source 9, a localization control circuit 10, an amplifier circuit 11, a pair of left and right speakers 12a and 12b, and the like. , Each of the above-mentioned parts is
Connected by The ROM 3 stores a basic control program of the electronic musical instrument 1, a sound image localization control program, various fixed data, and the like.

The CPU 2 controls each part of the electronic musical instrument 1 by performing arithmetic processing using the RAM 4 as a work memory in accordance with a program in the ROM 3, performs processing as the electronic musical instrument 1, and performs sound image localization control processing.

The RAM 4 is used as a work memory of the CPU 2. In particular, coordinate data input from the touch panel 7 and length data (radius data) input from the switch unit 5 in a sound image localization setting mode described later.
Is stored. Further, the RAM 4 has a video area, and stores coordinate data for causing the display unit 6 to display and output the input sound image localization form at a position corresponding to the coordinate data in the video area.

The switch section 5 is provided with various switches required for operating the electronic musical instrument 1, for example, a power switch, a mode switch for selecting various modes, a tone switch, and the like. Is provided with a length input switch (length input means) for inputting the radius (length) of the circle when moving the circle along the circumference. The length data (radius data) input by the length input switch is stored in the RAM 4. Therefore, R
The AM 4 functions as length storage means for storing length data.

The display unit 6 is composed of, for example, a liquid crystal display device, and displays and outputs various information notified to the player from the electronic musical instrument 1, for example, set tone colors and the like. In particular, the display unit 6
Displays and outputs the sound image form input from the touch panel 7 as a graphic, as described later.

As the touch panel 7, a normal touch panel is used. The CPU 2 decomposes the plane of the touch panel 7 into X coordinates and Y coordinates in accordance with the resolution of the touch panel 7, and determines the touched position for sound image localization. The data is read as the X and Y coordinate data of the center of the changing circle and stored in the RAM 4. That is, the touch panel 7 configures two-dimensional coordinates of an X coordinate and a Y coordinate as shown in FIG.
The coordinates are set to represent the position of the sound image in the left-right direction, and the Y coordinates are set to represent the position of the sound image in the front-rear direction. Therefore, the maximum value Ymax on the touch panel 7 as the Y coordinate
Is specified, the sound image localization is located at the rearmost position. When the maximum value Xmax is specified as the X coordinate,
The sound image localization is located on the rightmost side.

Therefore, the touch panel 7 and the CPU 2
Has a plane constituting predetermined two-dimensional coordinates, and functions as a coordinate designation unit capable of inputting data corresponding to coordinates on the plane. The RAM 4 functions as a coordinate storage unit that sequentially stores the input coordinate data.

The keyboard 8 is composed of a plurality of keys, and outputs note information such as key codes and velocity data of keys pressed by the player to the CPU 2. The CPU 2 outputs to the sound source 9 musical note information based on the musical note information and the tone color data set by the switch unit 5.

The sound source 9 generates an audio signal based on the input musical sound information, and outputs the generated audio signal to the localization control circuit 1.
Output to 0.

The localization control circuit 10 is configured as shown in FIG. 3, and includes three multipliers 21, 22, and 23. The localization control circuit 10 includes an acoustic signal from the sound source 9 and three types of operation data (Ymax-
Y) / Ymax, (Xmax-X) / X, X / Xmax
Is entered.

Here, X and Y are coordinate data designated by the touch panel 7 and stored in the RAM 4, and are coordinate data at the timing of the arithmetic processing, for example, a sound image moving on the circumference as shown in FIG. Center position of localization (x
1, y1) is specified, and is coordinate data indicating a position on the circumference of a circle having a radius r whose length is input from the length input switch of the switch unit 5. As is apparent from FIG. 2, the calculated data (Ymax-Y) / Ymax is the coordinate data Y on the circumference is the maximum value Ymax of the Y coordinate.
The calculated data (Xmax−X) / X indicates how close the coordinate data X on the circumference is to the maximum value Xmax of the X coordinate. Indicates the ratio. The calculated data X / Xmax indicates how far the coordinate data X on the circumference is from the maximum value Xmax of the X coordinate by the ratio.

The multiplier 21 stores the sound signal from the sound source 9 and the operation data (Ymax−Y) /
Ymax is input, and the multiplier 21 multiplies the acoustic signal by operation data (Ymax−Y) / Ymax, and outputs a result of the multiplication to the multiplier 22 and the multiplier 23. The operation data X / Xmax is further input to the multiplier 22. The multiplier 22 multiplies the operation result of the multiplier 21 by the operation data X / Xmax, and outputs a left channel output (left c
h output) to the amplifier circuit 11. Further, the arithmetic data (Xmax−X) / X is input to the multiplier 23, and the multiplier 23 multiplies the multiplication result of the multiplier 21 by the arithmetic data (Xmax−X) / X, and The signal is output to the amplifier circuit 11 as a channel output (right channel output).

As the amplifier circuit 11, a normal amplifier circuit is used, and an amplifier circuit is provided for each of the left and right channels. The amplifying circuit 11 amplifies the output of each channel input from the localization control circuit 10 and the corresponding speaker 12
a and 12b.

Next, the operation will be described.

When the electronic musical instrument 1 is turned on, the electronic musical instrument 1 shown in FIG.
First, an initialization process is performed to initialize various registers and the like (step S1). When the initialization process is completed, preset fixed values x0 and y0 are set in an X register and a Y register for storing X and Y coordinate data (step S2), and an R register for storing radius data is set. A fixed value r0 set in advance is set, and a start flag SF ("0", meaning the first processing) indicating whether the processing is the first processing is set to "0", and The switching flag LF indicating whether the sound image localization is located on the upper half circumference or the lower half circumference of the changing circumference is set to "0" (step S3). That is, assuming that the sound image localization moves on the circumference indicated by the solid line in FIG. 2, in this embodiment, the sound image localization starts moving from a position immediately below the center coordinates (x1, y1) of the circle, Move counterclockwise. The switching flag LF is set to “1” when the current position of the sound image is located on the circumference of the upper half of the circle, and is set to “1” when the current position of the sound image is located on the circumference of the lower half. It is set to “0”, and as an initial value,
In this embodiment, since the movement is started immediately below the circle, "0" is set to the switching flag LF.

Next, it is checked whether or not the touch panel 7 has been touched (step S4). If there is a touch, the X and Y coordinates of the touched position are stored in the X register and the Y register.
The data is stored in a register (step S5), and the switch unit 5 is scanned to check whether or not the radius data r has been input by the length input switch (step S6). When the radius data r is input, the input radius data r is stored in the R register (step S7), and a key scan of the keyboard 8 is performed to check a key change (steps S8 and S).
9).

In step S9, if no key operation is performed and there is no change, the process returns to step S4 to perform the same processing from the touch detection of the touch panel 7, and turns on the key (ON).
If the operation has been performed, it is checked whether the start flag SF is "1" (step S11). Since this is the first process and has been set to "0" in step S3, the process proceeds to step S12, where the start flag SF is set to "1" and the value of the X register is set to the pointer x. (Step S13) It is checked whether the switching flag LF is "1" (Step S1).
4). Now, the switching flag LF is set to “0” in step S3.
, So the process proceeds to step S15,
The position of the y coordinate is calculated by the following equation (step S1)
5).

Y = Y− {R ² − (x−X) ² } ^1/2 (1) Next, data calculation processing is performed (step S 16).

This data calculation process is performed as shown in FIG.

That is, the CPU 2 controls the localization control circuit 10
Calculation data (Ymax−Y) / Ymax
Is set (step D1), and operation data X / Xmax is set in the multiplier 22 of the localization control circuit 10 (step D1).
2). Further, the CPU 2 supplies the arithmetic data X /
Xmax is set (step D3).

After completing the data calculation process, the CPU 2 increments the pointer x by "1" (step S17), and changes the value of the pointer x to the value of the radius R to the value of the X coordinate of the center coordinate position of the circle. It is checked whether the sum (X + R) has been exceeded (step S18). That is, it is checked whether the sound image localization has moved to the right end of the circle.

When x> X + R is not satisfied, the process directly proceeds to step S20, where the key code corresponding to the depressed key is supplied to the tone generator 9, and a sound-on instruction is given. When the sound source 9 is instructed by the CPU 2 to generate sound, the sound source 9 generates an acoustic signal based on the given key code, outputs the generated acoustic signal to the localization control circuit 10, and returns to step S4.
The localization control circuit 10 multiplies the acoustic signal input from the sound source by the set operation data (Ymax−Y) / Ymax, and outputs the multiplication result to the multiplier 22 and the multiplier 23. Then, the multiplier 22 multiplies the set operation data X / Xmax by the multiplication result of the multiplier 21 and outputs the multiplication result to the amplifier circuit 11 as a left-channel output, and the multiplier 23 sets the multiplication result. Calculation data (Xmax-X) /
X is multiplied by the multiplication result of the multiplier 21, and the multiplication result is output to the amplifier circuit 11 as a right channel output. Amplifier circuit 1
1 amplifies the input left-channel output and right-channel output and emits the sound via the speakers 12a and 12b, respectively.

Returning to step S4, the presence / absence of a touch or the input of radius data r is checked (steps S4, S4).
7) If there is no input of a new center position or radius, the keyboard 8 is scanned to check for a key change (step S).
8, S9).

When detecting that the key is turned off in step S9, the CPU 2 instructs the sound source 9 to mute the sound corresponding to the key (step S10).
Return to 4. If there is no key change in step S9, the process returns to step S4 without performing the sound generation process or the mute process.

When the key ON operation is detected in step S9, the start flag SF is checked. Since the start flag SF is set to "1" in step S12, the process proceeds to step S14. The switching flag LF is checked (step S14). Now, since the switching flag LF remains at "0", step S15
Then, similarly to the above, the arithmetic processing of the value of y and the data arithmetic processing are performed (steps S15 and S16), and the pointer x is incremented (step S17). It is checked whether the incremented pointer x exceeds (X + R) (step S18).

Thereafter, assuming that the sound image localization starts moving from directly below the circumference and moves to the right end of the circumference, x> X + R is satisfied in step S18. When the sound image localization moves to the right end of the circumference in this way, "1" is set to the switching flag LF (step S19), the key code of the key pressed this time is supplied to the sound source 9, and an ON instruction is given. Then, the process returns to step S4 (step S20).

When the processing is performed up to step S14, the switching flag LF is set to "1" in the previous processing. Therefore, the processing shifts from step S14 to step S21. The value of y is calculated by the equation.

Y = Y + {R ² − (x−X) ² } ^1/2 (2) Next, the data arithmetic processing shown in FIG. 5 is performed (step S 22), and the pointer x is set to “1”. Is decremented (step S23), and the decremented pointer x
Is smaller than the value (X−R) obtained by subtracting the radius value R from the X coordinate value X at the center position of the circle, that is, whether the sound image localization has moved to the left end of the circumference. (Step S24).

If it is not x <X-R in step S24, the flow shifts to step S20 to perform sound generation processing, and returns to step S4 to repeat the same processing.

At step S24, when x <X−R,
After determining that the sound image localization has moved to the left end of the circumference, the switching flag LF is set to "0", and then the sound generation process is performed (steps S25 and S20).

Thereafter, the same processing is repeated, and the sound image localization changes along the specified circumference.

If the touch panel 7 is touched during the performance, this touch is detected in step S4, and the X and Y coordinates of the touch can be designated as the center position of the circle for moving the sound image localization in step S5. , The center position where the sound image localization changes can be changed.

Further, when the radius data r is input from the switch unit 5 without performing the touch operation on the touch panel 7,
This switch operation is detected in step S6, and step S6 is performed.
In step 7, the input radius data r can be designated as radius data r of a circle for moving the sound image localization, and the radius of the circle in which the sound image localization changes can be changed.

As described above, when the center coordinates of the circle are designated on the touch panel 7 and the radius of the circle is inputted as the radius data r on the switch unit 5, the designated center coordinates are set as the center and the circle on the circumference of the designated radius is designated. , The sound image localization can be moved, and a musically rich and interesting change in the sound image localization can be realized.

FIGS. 6 and 7 show a second embodiment of the sound image localization control device according to the present invention. In this embodiment, it is possible to continuously input the center coordinates of a circle for changing the sound image localization. ,
The center of the circle in which the sound image localization changes is continuously changed along the continuously input center coordinates.

This embodiment is applied to the same electronic musical instrument 1 as the first embodiment. In the description of this embodiment,
Using the reference numerals used in the above embodiment as they are, only the operation will be described based on the flowcharts shown in FIGS.

The electronic musical instrument 1 has a sound image localization setting mode in which a change mode of the sound image localization is set by a mode switch;
A performance mode in which the sound image localization is changed while performing according to the set change mode of the sound image localization. FIG. 6 shows the sound image localization setting mode processing, and FIG. 7 shows the performance mode processing.

First, the sound image localization setting mode processing will be described with reference to FIG.

When the power is turned on, the electronic musical instrument 1 first performs an initialization process to initialize various registers and the like (step P1). When the initialization processing is completed, preset fixed values x0 and y0 are stored in all the areas of the RAM 4 where the X and Y coordinates are stored, that is, in all corresponding addresses (step P).
2) The fixed value r0 is stored in the R register and the start flag SF
Is set to "0", and the maximum value Amax that can be taken in the address register A1 for storing the final address is set (step P3).

Next, the switch section 5 is scanned to check the operation states of various switches, particularly the operation state of the mode switch, and to check whether the mode switch has been turned on (step P4). When the mode switch is turned on, the mode flag MF indicating whether the mode is the sound image localization setting mode is inverted (step S).
3). That is, every time the mode switch is turned on, the mode flag MF is inverted.
“1” indicates that the mode is the sound image localization setting mode. Next, “0” is set in the address counter A that specifies the address of the RAM 4, “0” is set in the start flag SF,
Further, "0" is set to the switching flag LF (step P6).

When the processing at the time of turning on the mode switch is completed, it is determined whether or not the mode flag MF is "1" to determine whether or not the sound image localization setting mode is set (step P7). At this time, the process shifts to the performance mode process shown in FIG. When the mode flag MF is "1", it is checked whether or not the touch panel 7 has been touched (step P8). When the touch panel 7 has not been touched, the process proceeds to step P22 to scan the switch unit 5 and perform the radius data Check the input of r (step P23).

If there is a touch on the touch panel 7 in step P8, it is checked whether the start flag SF is "1", that is, the mode shifts to the sound image localization designation mode and the first processing is performed (step P9). If not, the process proceeds to the sound image localization designation mode, it is determined that the process is the first process, and the start flag SF is set to “1” (step P10). X corresponding to the touch position,
The Y coordinate is stored in the RAM 4 (Step P11). The respective values of the X and Y coordinates are stored in the registers X2 and Y2 for storing the previous touch coordinates, respectively (step P12), and stored in the registers X1 and Y1 for storing the current touch coordinates. , This X,
Each value of the Y coordinate is stored (step P13).

Next, it is checked whether the value of the register X1 is equal to the value of the register X2, and whether the value of the register Y1 is equal to the value of the register Y2 (step P14).

This is because when the speed of the operation of designating the center coordinate of the sound image localization by the touch panel 7 is lower than the speed at which the CPU 2 scans the touch panel 7 and detects the X and Y coordinates on the touch panel 7. In addition, the same coordinate is prevented from being detected a plurality of times, so that only the moving center coordinate of the sound image localization can be designated. Therefore, by performing the process in step P14, the performer can specify the center position of the intended circle by specifying only the center position at which the sound image localization is moved without being conscious of the touch speed of the touch panel 7. can do.

Now, this is the first process after the transition to the sound image localization setting mode. Since the same values are stored in the registers X2 and X1 and the registers Y1 and Y2 in steps P12 and P13, the registers X1 and Since X2 and the values of the registers Y1 and Y2 are the same, the process shifts to step P22 to scan the switch unit 5 and check the input of the radius data r (step P23).

That is, the CPU 2 scans the switch section 5 to check whether or not the radius data r has been input by the length input switch (steps P22 and P21).
3) When the radius data r is input, the input radius data r is stored in the R register, and the process returns to Step P4 (Step P24).

When the mode switch is not turned on,
Similarly, the process proceeds from step P4 to step P7, where the sound image localization setting mode is continued, and when the touch panel 7 is touched, it is checked whether or not the start flag SF is “1” (step P9). Now, start flag SF
Is set to "1", the program shifts to step P13, where the values of the X and Y coordinates of the touch position are stored in the registers X1 and Y1, respectively, and the values of the registers X1 and X2 and the registers Y1 and It is checked whether or not the value of the register Y2 is different from the previous touch position (step P14). When the current touch position is the same as the previous touch position, the process proceeds to step P22 without storing the data of the current touch position, but when different from the previous touch position, the address counter A is incremented by "1" (step P15). Using the incremented value of the address counter A as an address, the values of the X and Y coordinates of the current touch position are stored in the RAM 4 (step P16).

Then, the X and Y coordinate values specified this time and stored in the register X1 and the register Y1 are stored in the register X2.
And store it in the register Y2 (step P17), set the value of the address counter A in the address register A1 (step P18), and check whether the value of the address counter A has reached the maximum value Amax that the address counter A can take. (Step P19). That is, R
It is checked whether the maximum address of the sound image localization address of AM4 has been reached.

The value of the address counter A is the maximum value Amax
Is not reached, X in the video area of the RAM 4,
The display data is written at a position corresponding to the value of the Y coordinate, and the X and Y coordinates are displayed on the display unit 6 (step P2).
1) Scan the switch unit 5 to check whether the radius data r has been input (steps P22 and P2)
3). If the radius data r has not been input, the process returns to step P4. If the radius data r has been input, the input radius data r is stored in the R register, and the process returns to step P4 (step P24).

Thereafter, the same processing is performed, and step P1
In step 9, when the value of the address counter A reaches the maximum value Amax, the mode flag MF, the start flag SF, and the switching flag LF are set to "0" (step P20), and after the sound image localization setting mode is released, The X and Y coordinates are displayed on the display unit 6 (Step P21). And
The switch unit 5 is scanned to check whether the radius data r has been input (steps P22 and P23). When the radius data r has been input, the input radius data r
Is stored in the R register, and the process returns to Step P4 (Step P24).

As described above, when the mode switch is turned on, the center coordinates of the circle and the radius of the circle, which are the change modes of the sound image localization changed by the length input switches of the touch panel 7 and the switch unit 5, can be input. In addition, the center coordinates of the circle can be continuously input and stored in the RAM 4. As a result, it is possible to easily input the center coordinates of the circle and the radius of the circle, which are the intended forms of change in the sound image localization, and to set the form of the sound image localization simply and easily.

In this way, when the sound image localization is designated and the mode switch is turned on, the turning on of the mode switch is detected in step P4, and the mode flag MF is inverted to "0" in step P5. You. Then, the process exits the sound image localization setting mode, resets the address counter A to "0", resets the start flag SF to "0", and sets the switching flag LF to "0" (step P6). When the value of the address counter A reaches the maximum value Amax, the mode flag MF, the start flag SF, and the switching flag LF are set to "0" in Step P20. Thereafter, in step P7, the mode flag MF is checked, and the process exits the sound image localization setting mode and shifts to the performance mode shown in FIG. The video RA
Since the clearing process of M is not performed, it is possible to display and output the sound image localization form on the display unit 6 based on the data in the video area of the RAM 4 by a suitable switch operation. When the sound image localization is not displayed in the performance mode, the process of clearing the video area of the RAM 4 may be performed in step P6.

Next, the performance mode processing will be described with reference to FIG.

In the performance mode, the keyboard 8 is first scanned to check whether a key operation has been performed (steps P25 and P26), and the key is now turned on (ON).
If the operation has been performed, it is checked whether the start flag SF is "1" (step P27). Now, since the start flag SF is set to “0” in step P6 or step P20 in FIG. 6, the process shifts to step P28 to set the start flag SF to “1”.
In addition, the check flag CF indicating whether the sound image localization starts moving when making a full circle on the circumference is set to "0", and the address counter A is set to "0" (steps P28 to P28).
(Step P30) The values of the X and Y coordinates are read from the RAM 4 using the value of the address counter A as an address (Step P31). The read X coordinate value is set in the pointer x (step P32), and it is checked whether the switching flag LF is "1" (step P33).

Since the switching flag LF is set to "0" in step P6 or step P20, the position of the y coordinate is calculated by the above equation (1) (step P34).

Next, data calculation processing is performed (step P35). This data calculation process is the same as the calculation process shown in FIG. 5, and a description thereof will be omitted.

When the data operation processing is completed, the pointer x
Is incremented by “1” (step P36),
Whether the incremented value of the pointer x is greater than the value (X + R) obtained by adding the radius value R from the X coordinate value X of the center coordinate of the circle, that is, whether the sound image localization has moved to the right end of the circumference (Step P3
7).

If x> X + R is not satisfied in step P37, the process directly proceeds to step P39, in which the key code corresponding to the depressed key is supplied to the tone generator 9, and a sound-on instruction is given. When the sound source 9 is instructed to generate sound by the CPU 2, the sound source 9 generates an audio signal based on the given key code, and outputs the generated audio signal to the localization control circuit 10.
The localization control circuit 10 performs arithmetic processing based on the arithmetic data set in the data arithmetic processing, and emits sound through the amplifier circuit 11 and the speakers 12a and 12b.

Thereafter, it is checked whether or not the value of y matches the value (Y−R) obtained by subtracting the value of the current radius data R from the value Y of the Y coordinate. Check whether it is located at the movement start position (Step P
40) If they match, it is checked whether the check flag CF is "1" to check whether the movement has been started or whether the sound image localization has returned to the movement start position after making a round (step P41). . Now that the movement has started, and the check flag CF has been set to "0" in step P29, the check flag CF is set to "1", and the process returns to step P4 in FIG.

As long as the mode flag is not turned on, the performance mode is continued, and the performance processing of FIG. 7 is performed. In FIG. 7, the key change is checked as described above (step P26).
Upon detecting the key OFF operation, the CPU 2 instructs the sound source 9 to mute the sound corresponding to the key (step P4).
3) Return to step P4. If there is no key change in step P26, the process returns to step P4.

Next, when the key ON operation is detected, the start flag SF is checked. Since the start flag SF is already set to "1" in step P28, the flow shifts to step P33. , The switching flag LF is checked.

When the switching flag LF is "0", similarly to the above, the value of y is calculated, the data is calculated, the pointer x is incremented (steps P34 to P36), and the sound image localization is performed. It is checked whether the right end has been reached (step P37). When the sound image localization reaches the right end of the circumference, the switching flag LF is set to "1" (step P38), the key code is supplied to the sound source 9, and the sound generation is instructed (step P3). Then, it is checked whether or not the sound image localization is at the movement start position (step P40). When the sound image localization is not at the movement start position, the process returns to step P4 to perform the same processing.

Next, when the key is turned on, the same processing as described above is performed, and the flow shifts to step P33 to check the switching flag LF.
Since it is set to "1" at 38, the value of y is calculated by the above equation (2) (step P44), and data calculation processing is performed (step P45). Thereafter, the pointer x is decremented by "1" (step P46), and the decremented pointer x is obtained by subtracting the radius value R from the X coordinate value X of the center position of the current circle (X-R). ) To check whether the sound image localization has moved to the left end of the circumference (step P47).

If it is not x <X−R in step P47, the process proceeds to step P39 to perform sound generation processing, and it is checked whether the sound image localization has returned to the movement start position (step P40). If the sound image localization has not returned to the movement start position, the process returns to step P4, and the same processing is repeated. Each time a key ON operation is performed, the sound image localization is moved along the circumference.

In step P47, when x <X−R,
After determining that the sound image localization has moved to the left end of the circumference, the switching flag LF is set to "0", and then a sound generation process is performed (steps P48 and P39), and it is checked whether the sound image localization has returned to the movement start position. (Step P40).

Since the sound image localization has just come to the left end of the circumference, the process returns to step P4 and the same processing is repeated. When y = YR in step P40, the sound image localization is at the movement start position. And check flag C
By checking F, it is determined whether or not it is time to start moving.
It is checked whether the vehicle has returned to the movement start position after making a round (step P41). Since the check flag CF has been set to "1" in step P42 and has returned to the movement start position after making a round, the check flag CF is set to "0" (step P49) and the address counter is set. A is incremented by "1" (step P50). This incremented address counter A
The values of the X and Y coordinates are read from the RAM 4 using the value of the address as an address (step P51). That is, the X and Y coordinates of the center position of the circle, which are continuously input in the sound image localization setting mode and are stored at the next address, are read, and the value X of the X coordinate is set in the pointer x (step P52). Then, the address counter A reads the value of the address register A1,
That is, it is checked whether the address has reached the maximum address (step P53). If the address has not reached the maximum address, the process returns to step P4 and the same processing as described above is performed. That is, the sound image localization is moved along the circumference around the newly set X and Y coordinates.

The above processing is sequentially repeated, and each time the sound image localization is completed on the circumference, the center position is sequentially changed, and the sound image localization is moved along the circumference at the new center position.

If the address counter A matches the address register A1 in step P53, it is determined that the maximum address of the X and Y coordinates has been reached, and "-1" is set in the address counter A (step P54). Returning to Step P4, the same processing is repeated. That is, when the center position of the circle is moved to the final position of the X and Y coordinates set in the sound image localization setting mode, the address counter A
Is set to “−1”, and the value obtained by incrementing the address counter A in step P50, that is, RAM
The sound image localization is moved again from the circumference of the circle centered on the X and Y coordinates stored at the head address of No. 4. For example, as shown in FIG. 2, the centers x1 and y1 of circles indicated by solid lines
From the coordinate position, the center position is moved along the sequentially designated X and Y coordinates, and x2 and y at the center of the circle indicated by the broken line
After moving to the final position of the two coordinates, the sound image localization is similarly moved from the first circumference shown by the solid line.

As described above, according to this embodiment, the center position of the sound image localization moving on the circumference is continuously designated, stored, and stored along the circumference centered on the stored center position. Thus, the sound image localization can be moved, and a more musically rich and interesting change in the sound image localization can be realized.

8 to 10 show a third embodiment of the sound image localization control device according to the present invention. In this embodiment, the center coordinates and radius data of a circle for changing the sound image localization are continuously input. It is possible to change the sound image localization continuously along the center of the circle where the sound image localization changes along the continuously input center coordinates, and continuously on the circumference of the continuously input radius. To change it.

This embodiment is applied to the same electronic musical instrument 1 as the first embodiment, and in the description of this embodiment,
Using the symbols used in the above embodiment as they are, only the operation will be described based on the flowcharts shown in FIGS.

Also in this embodiment, the electronic musical instrument 1 has a sound image localization setting mode and a performance mode. The sound image localization setting mode processing is shown in FIGS. 8 and 9, and the performance mode processing is shown in FIG. I have.

First, the sound image localization setting mode processing will be described with reference to FIGS.

When the power is turned on, the electronic musical instrument 1 first performs an initialization process to initialize various registers and the like (step Q1). When the initialization processing is completed, preset fixed values x0 and y0 are stored in all the areas of the RAM 4 where the X and Y coordinates are stored, that is, all the corresponding addresses (step Q).
2) The fixed value r0 is stored in the R register and the start flag SF
In the address register A1 and the maximum value A in the address register A1.
max is set (step Q3).

Next, the switch section 5 is scanned to check whether the mode switch has been turned on (step Q4). When the mode switch is turned on, the mode flag MF is inverted (step Q5). Next, "0" is set in the address counter A and the start flag S
F is set to "0" and the switching flag LF is set to "0" (step Q6).

When the processing at the time of turning on the mode switch is completed, it is checked whether or not the mode flag MF is "1" (step Q7). When the mode flag MF is "0", the processing shifts to the performance mode processing shown in FIG. I do. When the mode flag MF is "1", it is checked whether or not the touch panel 7 has been touched (step Q8). When the touch panel 7 has not been touched, the process proceeds to step Q24, where the switch unit 5 is scanned and the radius data is scanned. r
Is checked (step Q25).

In step Q8, if the touch panel 7 is touched, it is checked whether the start flag SF is "1" (step Q9). If not, the start flag SF is set to "1" (step Q9). Q1
0), using the value of the address counter A as an address, the X and Y coordinates corresponding to the touch position on the touch panel 7
(Step Q11). The value of the R register is stored in the RAM 4 using the address counter A as an address.
(Step Q12), and stores the respective values of the X and Y coordinates in the registers X2, Y2, X1, and Y1 (steps Q13, Q1).
4).

Next, it is checked whether the value of the register X1 and the value of the register X2 are the same, and whether the value of the register Y1 and the value of the register Y2 are the same (step Q15).

Now, since the process is shifted to the sound image localization setting mode and is the first process, the values of the registers X1 and X2 and the values of the registers Y1 and Y2 are the same. Perform a scan,
Check input of radius data r (step Q2
5).

When the radius data r is input, the start flag SF is checked (step Q26). If the start flag SF is not "1", the start flag SF is checked.
Is set to "1" (step Q27). Thereafter, fixed values x0 and y0 are set in the registers X2 and Y2 (step Q28), and the inputted radius data r is set to R
It is set in a register (step Q29), and as shown in FIG. 9, the coordinates of the register X2 and the register Y2 are stored in the RAM 4 using the value of the address counter A as an address (step Q30). Here, the fixed values x0 and y0 are set because the radius data r may be input before the center position is input from the touch panel 7,
In this case, the fixed value x is set in the register X2 and the register Y2.
This is because, when 0 and y0 are set, the next time a touch is made, the judgment process can be appropriately performed in step P15. Further, the value of the R register is stored in the RAM using the value of the address counter A as an address (step Q31), and the address counter A is incremented by "1" (step Q32). Thereafter, the value of the address counter A is set in the address register A1 (step Q33), and it is checked whether or not the address counter A has reached the maximum value Amax that the address counter A can take (step Q34). If the value of the address counter A has not reached the maximum value Amax, the process returns to step Q4.

Similarly, when the mode switch is not turned on, the process proceeds from step Q4 to step Q7, where the sound image localization setting mode is continued, and when the touch panel 7 is touched, it is checked whether the start flag SF is "1". (Step Q9). Now, start flag SF
Is set to "1", the process proceeds to step Q14, where the values of the X and Y coordinates of the touched position are stored in the registers X1 and Y1, respectively, and the values of the registers X1 and X2 and the registers Y1 and It is checked whether or not the value of the register Y2 is different from the previous touch position (step Q15). If the current touch position is the same as the previous touch position, the process proceeds to step Q24 without storing the data of the current touch position, but if different from the previous touch position, the address counter A is incremented by "1" (step Q16). The X and Y coordinate values of the current touch position are stored in the RAM 4 using the incremented value of the address counter A as an address (step Q17). The value of the R register is stored in the RAM 4 using the value of the address counter A as an address (step Q18), and the values of the X and Y coordinates stored in the register X1 and the register Y1 designated this time are stored in the register X2 and the register Y2. Thereafter (step Q19), the value of the address counter A is set in the address register A1 (step Q20), and it is checked whether the value of the address counter A has reached the maximum value Amax (step Q2).
1).

When the value of the address counter A is the maximum value Amax
If not, the X and Y coordinates are written in the video area of the RAM 4 as the X and Y coordinates, and displayed on the display unit 6 (step Q23), and the switch unit 5 is scanned.
It is checked whether the radius data r has been input (steps Q24, Q25). When the radius data r has not been input, the process directly returns to step Q4. When the radius data r has been input, the start flag SF is set to “1”.
It is checked whether it is (step Q26). Since the start flag SF is set to "1", the input radius data r is set in the R register (step Q29), and the coordinates of the register X2 and the register Y2 are set using the value of the address counter A as an address. The value of the R register is stored in the RAM 4 (Steps Q30, Q31). Then, the address counter A is incremented, the incremented address counter A is set in the address register A1 (steps Q32, Q33), and the value of the address counter A is compared with the maximum value Amax (step Q34).

The above processing is sequentially repeated, and the newly touched coordinate position is stored in the RAM 4, and the newly input radius data r is stored in the RAM 4. As described above, the center position of the circumference for moving the sound image localization can be continuously input by the touch panel 7, and the radius of the circle can be continuously input by the length input switch. The center position and the radius of the circular orbit to be formed can be easily and easily input.

The processing is sequentially performed as described above.
When the value of the address counter A matches the maximum value Amax in step Q21 or step Q34, the mode flag MF, the start flag SF, and the switching flag LF are set to "0".
(Step Q22, Step Q35), and exits the sound image localization setting mode. The sound image localization setting mode can be removed by turning on the mode switch. That is, when the mode switch is turned on, this is detected in step Q4, and after inverting the mode flag MF, the address counter A, the start flag SF, and the switching flag LF are set to "0" (steps Q5, Q5).
6).

When the mode flag MF is set to "0" in this way, it is detected in step Q7 that the mode flag MF is "0", and the process exits the sound image localization setting mode and shifts to the performance mode.

Next, the performance mode processing will be described with reference to FIG.

In the performance mode, first, the keyboard 8 is scanned to check whether or not a key operation has been performed (steps Q36 and Q37). Is checked to see if it is "1" (step Q38). Now, since the start flag SF is set to "0" when shifting from the sound image localization setting mode to the performance mode, the start flag SF is set to "1", the check flag CF is set to "0", and the address counter is further set. A is set to "0" (steps Q39 to Q41), the values of the X and Y coordinates are read from the RAM 4 using the value of the address counter A as an address, and the value of the address counter A is used as an address.
The radius data r is read from AM4 and stored in the R register (steps Q42, Q43). The value of the read X coordinate is set in the pointer x (step Q44), and it is checked whether the switching flag LF is "1" (step Q44).
45).

Now, the switching flag LF is set in step Q6,
Since "0" has been set in step Q22 or step Q35, the position of the y coordinate is calculated by the above equation (1) (step Q46).

Next, data calculation processing is performed (step Q47). This data calculation process is the same as the calculation process shown in FIG. 5, and a description thereof will be omitted.

When the data operation processing is completed, the pointer x
Is incremented by “1” (step Q48),
Whether the incremented value of the pointer x is larger than the value (X + R) obtained by adding the radius value R to the X coordinate value X of the center coordinate of the circle, that is, whether the sound image localization has moved to the right end of the circumference (Step Q4)
9).

If x> X + R is not satisfied in step Q49, the flow directly advances to step Q51 to supply the key code corresponding to the depressed key to the tone generator 9 and give an instruction to turn on the sound.

Then, depending on whether the value of y matches the value (YR) obtained by subtracting the value of the current radius data R from the value Y of the Y coordinate, the sound image localization is shifted to the movement start position on the circumference. It is checked whether it is located (step Q52), and if they match, it is checked whether the check flag CF is "1" (step Q53). Since the movement has just started, the check flag CF is set to "1", and the process returns to step Q4 in FIG.

As long as the mode flag is not turned on, the performance mode is continued, and the performance processing of FIG. 10 is performed. FIG.
0, the key change is checked in the same manner as described above (step Q3).
7) Upon detecting the key OFF operation, the CPU 2 instructs the sound source 9 to mute the sound corresponding to the key (step Q55), and returns to step Q4. Step Q37
If there is no key change, the flow directly returns to step Q4.

Next, when the key ON operation is detected, the start flag SF is checked. Since the start flag SF has already been set to "1" in step Q39, the flow shifts to step Q45. , The switching flag LF is checked.

When the switching flag LF is "0", similarly to the above, the value of y is calculated, the data is calculated, the pointer x is incremented (steps Q46 to Q8), and the sound image localization is performed. (Step Q49). When the sound image localization reaches the right end of the circumference, the switching flag LF is set to "1" (step Q50), and the key code sound source 9 is supplied.
A pronunciation instruction is issued (step Q51). Then, it is checked whether the sound image localization is at the movement start position (step Q5).
2) If it is not at the movement start position, the process returns to step Q4 to perform the same processing.

Next, when the key is turned on, the same processing as described above is performed, and the flow shifts to step Q45 to check the switching flag LF.
Since it is set to "1" at 50, the value of y is calculated by the above equation (2) (step Q56), and data calculation processing is performed (step Q57). Thereafter, the pointer x is decremented by "1" (step Q58), and the decremented pointer x is obtained by subtracting the radius value R from the X coordinate value X of the current center position of the circumference (X-R). ) To check whether the sound image localization has moved to the left end of the circumference (step Q59).

If it is not x <X−R in step Q59, the process proceeds to step Q51 to perform sound generation processing, and it is checked whether the sound image localization has returned to the movement start position (step Q52). When the sound image localization has not returned to the movement start position, the process returns to step Q4 to repeat the same processing, and moves the sound image localization along the circumference every time the key is turned on.

In step 59, when x <X−R, it is determined that the sound image localization has moved to the left end of the circumference, the switching flag LF is set to “0”, and the sound generation process is performed (step Q60, Q51), it is checked whether the sound image localization has returned to the movement start position (step Q52).

Since the sound image localization has just come to the left end of the circumference, the process returns to step Q4 to repeat the same processing. When y = YR in step Q52, the sound image localization is at the movement start position. And check flag C
By checking F, it is determined whether or not it is time to start moving.
It is checked whether the vehicle has returned to the movement start position after making a round (step Q53). Since the check flag CF has been set to "1" in step Q54 and has returned to the movement start position after making a round, the check flag CF is set to "0" (step Q61), and the address counter is set. A is incremented by "1" (step Q62). This incremented address counter A
The value of the X and Y coordinates is read from the RAM 4 using the value of the address as the address, and the radius data r is read from the RAM 4 using the value of the address counter A as the address and stored in the R register (steps Q63 and Q64). Thereafter, the same processing is performed, and the sound image localization is moved along the circumference having the new X, Y coordinates as the center of the circle and the new radius data r as the radius. Then, when it is detected in step Q52 and step Q53 that a new circle has been made, the check flag CF is similarly reset to “0” (step Q6).
1) The address counter A is incremented, the new X, Y coordinates and radius data r are read out (steps Q62 to Q63), and the sound image localization is performed on the circumference of the new radius at the new center position. To move.

That is, when the sound image localization is made to go around the circumference from the movement start position, the sound image is moved on the circumference having the next new X and Y coordinates as the center position and the radius data r as the radius.

The above processing is sequentially repeated, and the process proceeds to step Q66.
When the address counter A reaches the value of the address register A1, it is determined that the processing has been completed up to the last address.
"-1" is set in the address counter A, and the same processing is performed. That is, X set in the sound image localization setting mode,
By moving the center position of the circle to the final position of the Y coordinate,
Next, "-1" is set in the address counter A to return the center position of the circle to the initial position. Similarly, while moving the center position of the circle, the center position of the circle is Move the sound image localization along.

As described above, according to the present embodiment, the center position and the radius data of the sound image localization moving on the circumference are continuously designated, stored, and the stored center position is set as the center.
The sound image localization can be moved along the circumference of the radius data r that is stored, and the change in the sound image localization that is more musically rich and interesting can be realized.

In the above embodiment, the case where the present invention is applied to an electronic musical instrument is described. However, the present invention is not limited to this. The present invention can be applied to general musical instruments that provide sound image localization to an input acoustic signal.

In the above embodiment, the case where the sound image localization is moved in a manual performance in which a key is operated to perform is described. However, the present invention can be similarly applied to an automatic performance.

[0127]

According to the present invention, data corresponding to coordinates on a plane is inputted by coordinate designating means having a plane constituting predetermined two-dimensional coordinates, and a predetermined length is inputted by length input means. Is input. The position on the circumference of a circle whose radius is the length data input by the length input means is sequentially calculated by the calculation means, centering on the coordinate data input by the coordinate designating means. The localization control means controls the sound image localization of the generated acoustic sound based on the calculated position data. Therefore, the center of the circle for moving the sound image localization is input by the coordinate designating means,
Just by inputting the radius of the circle with the length input means, the player can easily and easily specify the circle intended to change the sound image localization. Along with the sound image localization. As a result, a change in sound image localization that is musically rich and interesting can be easily and easily realized.

Further, a plurality of coordinate data designated by the coordinate designating means are sequentially stored in the coordinate storage means, and the coordinate data stored in the coordinate storage means is read out by the coordinate reading means, and Since the position on the circumference of the circle is sequentially calculated with the coordinate data read by the coordinate reading means as the center, the center position of the circumference on which the sound image localization moves can be sequentially changed, thereby further improving the musical quality. It is possible to realize a rich and interesting change in sound image localization.

Further, a plurality of length data input by the length input means are sequentially stored in the length storage means, and the length data stored in the length storage means is read out by the length reading means. Since the calculating means sequentially calculates the position on the circumference of the circle whose radius is the length data read by the length reading means, the radius of the moving circumference of the sound image localization is sequentially changed. Thus, a change in sound image localization that is more musically rich and interesting can be realized.

Further, if a touch panel is adopted as the coordinate designating means, coordinate data of a change form of the sound image localization can be easily specified, and the player can easily and easily set the sound image localization intended by himself / herself. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic musical instrument to which a first embodiment of a sound image localization control device according to the present invention is applied.

FIG. 2 is an explanatory diagram of X and Y coordinates of the touch panel of FIG. 1;

FIG. 3 is a detailed circuit configuration diagram of the localization control circuit of FIG.

FIG. 4 is a flowchart showing a sound image localization setting process and a performance process.

FIG. 5 is a flowchart showing the detailed processing of the calculation processing of FIG. 4;

FIG. 6 is a flowchart showing a sound image localization setting mode process of a second embodiment of the sound image localization control device according to the present invention.

FIG. 7 is a flowchart showing a performance mode process of a second embodiment of the sound image localization control device according to the present invention.

FIG. 8 is a flowchart showing a sound image localization setting mode process of a third embodiment of the sound image localization control device according to the present invention.

FIG. 9 is a flowchart showing a process subsequent to the sound image localization setting mode of the third embodiment of the sound image localization control device according to the present invention.

FIG. 10 is a flowchart showing a performance mode process of the third embodiment of the sound image localization control device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic musical instrument 2 CPU 3 ROM 4 RAM 5 Switch part 6 Display part 7 Touch panel 8 Keyboard 9 Sound source 10 Localization control circuit 11 Amplification circuit 12a, 12b Speaker

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G10K 15/00 G10H 1/00 G10H 1/053 H04S 1/00 H04S 7/00

Claims (2)

(57) [Claims] 1. A coordinate designating means having a plane constituting predetermined two-dimensional coordinates, capable of inputting data corresponding to coordinates on the plane, and a plurality of coordinate data designated by the coordinate designating means.
A coordinate storage means for sequentially storing, and a coordinate reading means for reading coordinate data stored in the coordinate storage means
Mark reading means, length input means capable of inputting length data representing a predetermined length, and a length inputted by the length input means centering on the coordinate data read by the coordinate reading means Calculating means for sequentially calculating the position on the circumference of the circle having the radius as the data; and localization control means for controlling sound image localization of the acoustic sound generated based on the position on the circumference of the circle calculated by the calculating means. A sound image localization control device, comprising: 2. The sound image localization control device according to claim 1, wherein the plurality of length data input by the length input means is provided.
Length storage means for sequentially storing, and length for reading out the length data stored in the length storage means
Reading means, and wherein the calculating means has a length read by the length reading means.
2. The sound image localization control device according to claim 1, wherein positions on a circumference of a circle having a radius of the data are sequentially calculated.