JPH0432395B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic musical instrument, and more particularly to a panning control device for an electronic musical instrument.

[Prior art and its problems] Conventionally, conventional technology has an automatic panning function that cyclically moves the sound image formed by the stereo output musical tones by cyclically changing the volume balance of the left and right stereo channels of the musical tones. Panning control devices are known. However, because the same automatic panning effect was applied to all musical tones during a performance, there was a limit to the sound field effects that could be expressed.

[Object of the invention] Therefore, the present invention aims to improve the diversity of musical expression,
To further increase the degree of freedom, it is an object of the present invention to provide a panning control device that can apply independent automatic panning effects to each musical tone system.

[Structure and operation of the invention] According to the present invention, in order to achieve the above object, musical tone signals generated from a sound source having a plurality of sound source channels are formed by a system-based musical sound signal forming means that outputs them by system. System-specific automatic panning setting means sets the position of the sound image for each system to vary periodically, and to make at least the speed of movement of the sound image different for each system.

Then, based on the above-described settings of the system-specific automatic panning setting means, the system-specific automatic panning effect adding means executes panning control for the system-specific musical tone signals, and adds an automatic panning effect to each system.

In this way, an independent automatic panning control mode is set and executed for each system, and a high degree of sound field dynamism can be provided.

In addition to having regularity in the periodic fluctuations of the sound image, it is also possible to incorporate small fluctuations such as 1/f characteristics to give fluctuations to the regularity.

It is also possible to further add system-specific automatic panning prohibition means to the above-described configuration, so that automatic panning control can be prohibited without rewriting the panning control contents preset for each system. .

This eliminates the need to go to the trouble of resetting a certain system and selecting a panning waveform (horizontal line) that makes the sound image stand still, as a special form of automatic panning control.

In addition, an automatic unified panning setting means is provided for the above-mentioned configuration, and independent automatic panning control for multiple systems of musical tone signals is unified into the same form without rewriting the preset panning control contents. It is also possible to make it possible to

In such a case, it is possible to save the effort of setting different panning control settings for each system, resetting data for each system, and inputting the same setting data for other systems.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

<Overall Configuration> FIG. 1 shows the overall configuration of an electronic musical instrument 1 incorporating the features of the present invention. The keyboard 1-1 detects the key code, key pressing speed, key release speed data, and key pressure data after key pressing (aftertouch data on the keyboard) as information about the operated key,
The data is sent to a microcomputer (CPU) 1-2 as a control device of the electronic musical instrument 1. switch 1
-3 consists of a series of function switches, the status of each switch being sent to the microcomputer 1-2 for processing. The controller 1-4 constitutes performance controls other than the keyboard 1, and includes a foot volume operated by the foot, a modulation wheel for changing the depth of the tremolo, and one or more preset controllers. It includes operators such as definable wheels for acting on musical tone components, and each operator's data is stored in a microcomputer 1-1.
Sent to 2. The display section 1-5 consists of an LED, LCD (liquid crystal) display, etc., and displays the current performance status, operating status (system status) of the electronic musical instrument 1, setting data, etc. under the control of the microcomputer 1-2. . MIDI 1-6 is an external interface used by the microcomputer 1-2 to communicate data with external electronic musical instruments, sequencers, etc. Another external interface 1-7 is connected to the microcomputer 1-2.
This is an interface with the IC card, and the microcomputer 1-2 takes in data or programs from the IC card or writes data or programs to the IC card via this external interface 1-7. Microcomputer 1-2 has ROM1-8 and RAM1-
9, the ROM1-8 stores programs for operating the electronic musical instrument 1, tone data, performance data, etc., and the RAM1-9 stores data used during program execution, such as tone data, Tone control data, performance data, performance status data, etc. are temporarily stored.

A sound source 1-10 generates musical tone signals of a plurality of voices under the control of a microcomputer 1-2. As the sound source 1-10, for example,
An iPD (interactive phase distortion method) sound source as shown in No. 249467 can be used. Sound source 1-1
The digital musical tone signals generated by No. 0 are sent to the D/A converter 1-11 for each system (here, two systems), and are converted into analog musical tone signals for each system. Each system of analog musical tone signal from the D/A converter 1-11 is input to a panning effect generator 1-12 controlled by a microcomputer 1-2. The panning effect generator 1-12 has two pairs of VCAs (for two systems) that complementarily control the amplitude of the input analog musical tone signals of each system, and out of the total of four VCAs, two The VCA outputs of each are mixed to form stereo right channel and left channel signals. Thereby, the localization of the sound image is controlled for each system. Each stereo channel signal from panning effect generator 1-12 is passed through filter 1-
13, unnecessary frequency components are removed, and amplifier 1-1
After being amplified by 4, the sound is emitted from left and right speakers 1-15.

<Basic Operation> Next, the basic operation of the electronic musical instrument 1 will be explained with reference to FIGS. 2A to 2E and FIG. 3.

FIG. 2A shows the first timer interrupt routine that is started at regular intervals, and this routine 2-1
-1, the state of keyboard 1-1 and switch 1
-3 switch status is microcomputer 1
-Incorporated into 2.

FIG. 2B shows the second timer interrupt routine. In step 2-2-1, the data of the controller 1-4 is taken into the microcomputer 1-2, and from the comparison with the previous control data, changes in the control data are detected. The presence or absence of is checked, and if it has changed, control data change processing 2-2
-2 is executed. In the next step 2-2-3, calculations for realizing LFO vibrato are executed. That is, current vibrato data is generated from data that affects vibrato (reference rate, reference depth, control data for vibrato parameter modulation, and MIDI data).
Next, in step 2-2-4, calculations are performed to change the pitch of the musical tone using the LFO vibrato, MIDI data, and control data according to the pitch change setting status of the system, and the results are sent to the sound source 1-10. Then, the pitch is controlled.
Next, in step 2-2-5, data calculations are performed to realize LFO tremolo (growl) (including calculation processing required when control data or MIDI data modulates tremolo or growl). I do. Next, in step 2-2-6, calculations are performed to make the LFO tremolo, MIDI data (for example, aftertouch data), and control data actually change the tone and volume of the musical sound, and the results are transferred to the sound source 1-10. to control the tone and volume of musical sounds. Next, in step 2-2-7, pan data creation processing is performed to generate a panning effect for the first system of musical tones, and in step 2-2-8, a panning effect is created for the second system of musical tones. Performs pan data creation processing.

FIG. 2C shows a third timer interrupt routine, and in this routine 2-3-1, the microcomputer 1-2 is used to actually realize the panning effect generator 1-12 of FIG. A control signal is sent from

Figure 2D shows the MIDI reception processing routine 2-4 that is activated by an interrupt from the MIDI interface 1-6 when MIDI data is sent.
-1, and here the processing for reception (RAM
1-9 on the MIDI-related buffer, etc.). Figure 2E shows when sending MIDI data to an external electronic musical instrument, etc.
MIDI transmission processing routine 2-5-1 activated by an interrupt from MIDI interface 1-6
This maintains the MIDI data transmission speed.

FIG. 3 shows the general flow (main program) of the microcomputer 1-2. First, when the power is turned on, an initialization routine 3-1 is entered, in which initial settings for the sound source 1-6, initial display data settings for the display section 1-5, various control data, and calculation data are performed. Initial settings such as the following are performed. In step 3-2, the keyboard/switch data acquisition interrupt routine (second
A change in the state of the switch is determined with reference to the result in Figure A), and if there is a change, the switch change processing routine 3-3 is executed. In this routine 3-3, the performance mode settings, tone data settings,
Setting of MIDI control data, setting of panning control data, setting of musical tone control data for sound source 1-10, setting of display data for display section 1-5, initial setting of control data, setting of panning effect generator 1-12 Control, exchange of data or programs with the external interface 1-7 of the IC card, control of the MIDI interface 1-6, etc. are executed according to the system status (hereinafter referred to as menu).

Next, in step 3-4, the MIDI reception routine 2-4-1 (second D
Determine by referring to the inspection flag set in (Figure),
If there is input, MIDI IN processing routine 3-5
Execute. In this input processing routine 3-5,
Identifies MIDI input data and changes the corresponding internal performance mode and tone data according to the results.
Change pan control data, change musical tone control data,
Control of musical tones (note on/off, etc.), control of display data, control of MIDI interfaces 1-6, etc. are executed according to menus and setting data.

Next, in step 3-6, changes in the state of the keyboard 1-1, such as the presence or absence of a key press, the presence or absence of a key release, etc., are determined from the processing results of the interrupt routine 2-1-1 (Fig. 2A), and if there is a change. In this case, in the key change processing routine 3-7, the data changes due to key presses and key releases,
Sound generation assignment, sound generation processing, mute processing, control of MIDI interfaces 1-6, etc. are performed.

This invention relates to a panning effect control technique,
The panning control in this embodiment will be explained in detail below.

<Panning effect generator> Fig. 4 shows the panning effect generator 1-1 of Fig. 1.
2 and its peripheral circuits are shown in detail. Here, the sound source 1-10 consists of a plurality of sound source channels (musical sound generation channels) that operate in a time-division manner, and the musical sound signals generated for each sound source channel are accumulated for each musical sound system at the output stage of the sound source 1-10 ( ) and are input to the D/A converter 1-11 in a time-division manner. The D/A converter 1-11 converts the digital musical tone signal for each system into an analog signal, and sends it through a sample hold circuit (not shown) for each system at the output stage of the D/A converter 1-11. The signals are then distributed and input to a low-pass filter (LPF) 4-1 and a low-pass filter (LPF) 4-2 as analog musical tone signals of a first system (A system) and a second system (B system), respectively. The A-system musical tone signal from the low-pass filter 4-1 is branched to the input terminal IN1 of the A-system VCA in the voltage-controlled amplifier pair (VCA1) 4-3 for the stereo right channel, and to the input terminal IN1 of the A-system VCA for the stereo left channel. Voltage controlled amplifier pair (VCA2) for A system in 4-4
Input to input terminal IN1 of VCA. Similarly, the B-system musical tone signal from the low-pass filter 4-2 is also branched, and is connected to the input terminal IN2 of the B-system VCA in the stereo right channel voltage control amplifier pair (VCA1) 4-3, and the stereo left channel VCA input terminal IN2. B in voltage controlled amplifier pair (VCA2) 4-4 for channel
Input to input terminal IN2 of grid VCA. Each of these VCAs (voltage controlled amplifiers) modulates the amplitude (volume level) of the input musical tone signal according to the control voltage applied to its control terminal (CONT),
Output from the output terminal (OUT). The voltage applied to the control terminals CONT1 and CONT2 of each VCA is controlled by the microcomputer 1-2.
That is, during panning control, a total of four digital control data, two for each system, are input from the microcomputer 1-2 to the D/A converter 4-5, where they are converted to analog control voltages, and the outputs OUT1 and OUT3 are input to the D/A converter 4-5. control voltages that instruct the relative volume of the stereo left channel and the stereo right channel of musical tones of system A are output from the outputs OUT2 and OUT2 of the D/A converter 4-5, respectively.
From OUT4, control voltages are output which instruct the relative volume of the stereo left channel and the relative volume of the stereo right channel of the musical tones of system B, respectively. Complementary control voltages from the outputs OUT1 and OUT3 of this D/A converter 4-5 are the control terminals of the VCA for the stereo left channel and right channel of the A system.
CONT1 and D/A converter 4.
Complementary control voltages from the outputs OUT2 and OUT4 of -5 are applied to the control terminal CONT2 of the VCA for the stereo left channel and right channel of the B system. Musical sound signals A-R and B of the stereo right channel output from VCA1
The system musical tone signals B-R are mixed by an adder 4-6, and sent as a stereo right channel signal to a right speaker 4-1 via a filter 1-3 and an amplifier 1-4.
Musical sound signals A-L and B of the A system of the stereo left channel emitted from 5R and output from VCA2
The system musical tone signals B-L are mixed by an adder 4-7, passed through a filter 1-3 and an amplifier 1-4, and then emitted from the left speaker 4-15L.

The microcomputer 1-2 as a panning control device will be described in detail below.

<Panning parameter settings> Panning parameters can be set by pressing switch 1-1 when the system status is in the pan data setting menu.
According to the switch operation in step 3, switch change processing 3
-3 (Figure 3). Panning parameters set in this setting menu are shown in FIG. 5A. Note that all the parameters shown are for the first
This is placed on RAM1-9 in the figure.

Panning modes can be broadly divided into fixed mode (FIX mode), controller mode (EXT mode), and automatic mode (AUTO mode).
Here, fixed mode is a mode in which the sound image is fixed, and controller mode is a mode in which the sound image is controlled by the controllers on the main unit or the controllers (data) from an external MIDI controller. The automatic mode is a mode in which the sound image changes automatically.

In FIG. 5A, the signal indicated by PAN1 relates to the first system (A system) of musical tones, and the signal indicated by PAN2
The symbols indicated by are related to the second system (B system) of musical tones. This electronic musical instrument 1 has a mode called a combination mode (including tone mixes, key splits, positional cross fades, velocity splits, etc.) as a musical sound output mode.
Note on/off messages sent from the MIDI controller on the same communication channel and the keyboard 1-
Note on/off related to operation 1), 2
One musical tone system is assigned. In this combination mode, both PAN1 and PAN2 have meaning; in normal mode, which considers only one system of tones for a message, PAN
1 corresponds to one system of musical tones, and PAN2 is not used (note that in normal mode, sound sources 1-10 correspond to 1
Only the musical tones (polyphonics) for the system are generated, and the output thereof passes through the D/A converter 1-11 in FIG. 4 and is on line A. Of course, there is no musical tone signal on the B line). In the following explanation,
Assuming combination mode.

The RAM (register) indicated by 5-0 (MODE) in Figure 5A is a register that selectively indicates each of the above-mentioned FIX, EXT, and AUTO pan modes, and when bit 0 is "1", the FIX mode is selected. When bit 1 is "1", the mode is EXT, and when bit 2 is "1", the mode is AUTO. Furthermore, in AUTO mode, it is possible to select to disable automatic panning for each system, and the value of bit 3 of MODE register 5-0 can be used to turn on/off automatic panning of the first system, or to disable automatic panning of MODE register 5-0. bit 4
The value can be used to turn on/off automatic panning for the second system. Furthermore, in the AUTO mode, instead of automatic panning for each system, you can select a mono mode in which the sound images of the first and second systems move in synchronization, by setting bits 5 of MODE register 5-0.
(MONO-AUTO ON/OFF) indicates whether it is mono or system independent.

FIX-PLACE registers 5-1 and 5-2 are FIX
This is a memory for specifying the position of the sound image of the first system of musical tones and the position of the sound image of the second system of musical tones in each mode with a resolution of 31, where +15 indicates the right, -15 indicates the left, and 0 indicates the center.

EXT-CONT registers 5-3 and 5-4 are EXT
This specifies the type of controller (operator) that controls the sound image of the first and second systems of musical tones in each mode; a value of 1 is for AFTER TOUCH, and a value of 2 is for FUOT. VR), 3 is the modulation wheel (MOD WHEEL), 4 is the differential controller (DEF
CONTROLLER), panning is controlled by the MIDI controller (MIDI PAN) when set to 5.
Further, when the value is "0", there is no panning control by the controller (OFF). In EXT mode, if you select MIDI control instead of the main unit's controllers,
You can select which MIDI control message data controls panning for each system, and the selection results are
MCONT registers 5-5 (first system), 5-6
(second system).

Furthermore, in the EXT mode, it is possible to define the form of panning control (here, regarding the movement range and direction of the sound image) using the controller (operator) assigned for the panning effect. That is, EXT-CONT, RANGE register 5-
As shown in 7 and 5-8, the way the sound image is gripped for controller data values 0 to 7F(H)H) can be changed from left to right (L to R), right to left (R to L), or center. →Left (C→L), left→center (L→C), center→right (C→R), or right→center (R→C) can be selected.

When in AUTO mode, the movement speed RATE and sound image movement width DEPTH in periodic sound image movement.
(depth) can be set variably for each system. AUTO-RATE registers 5-9, 5-10 as shown
respectively store the automatic panning speed of the first system and the automatic panning speed of the second system, and
-DEPTH registers 5-11 and 5-12 store the automatic panning depth of the first system and the automatic panning depth of the second system, respectively. Furthermore,
In AUTO mode, it is also possible to modulate the automatic panning depth with the controller, and whether or not to modulate with the controller, and if so, which controller to use, is determined by the AUTO-CONT register 5-13, 5-
14.

Figure 5B shows the memory CONTROL DATA RAM that stores the input controller data, and the aftertouch data from the main unit is stored in the AFTER touch data.
TOUCH, Fututoporium data is FUOT
VR, modulation wheel data
MOD WHEEL, definable control data is DEF CONTROLLER, data of each controller from MIDI controller is MIDI CONT0
It is stored in each register shown by 7. The memory PAN OUT RAM shown in FIG. 5C stores panning output data to be given to the panning effect generators 1-12 (VCA1 and VCA2 in FIG. 4), and is used for the first system (PAN OUT1) and the second system. (PAN
OUT2).

<Panning data creation process, transfer process> The panning output data to be given to the panning effect generator 1-12 is performed according to the settings of the panning parameter settings described above, according to the panning data creation process flow 2-2 of the timer interrupt routine (Figure 2B).
-7, 2-2-8 are executed for each system.

That is, as shown in FIG. 6, the bread mode is identified and processing is performed according to the mode. According to the flow shown in Figure 6, in step 6-1
Bit 0 of MODE register 5-0 (Figure 5A)
is tested, and if it is “1” (FIX mode), FIX mode processing 6-3 is performed and MODE bit 0 = 0.
If so, bit 1 is tested, and if it is "1" (EXT mode), EXT mode processing 6-4 is performed, and if bit 1 = 0, it is AUTO mode.
AUTO mode processing 6-5 is performed.

The details of the FIX mode processing are as shown in Figure 7. In step 7-1, the data in the FIX-PLACE register (register 5-1 for the first system, register 5-2 for the second system) is If the polarity (POL) is right (+), right data conversion is performed (7-2, 7-3), and if polarity is left (-), left data conversion is performed (7-2, 7-4). For details, see FIX
-Convert the PLACE data 0 to F(H)H) to 0 to 3F, add 40 if the polarity is on the right, or 40 if the polarity is on the left.
Subtract from. and PAN OUT this data
RAM (from PAN OUT1 to PAN OUT in Figure 5C)
2) (step 7-5).

Details of the EXT mode processing are shown in FIG. EXT
-CONT register 5-3 (for the first system), 5
-3 (for the second system) and test it (step 8-1). If it is OFF, it is finished, and if it is ON, it is the controller (operator).
(for MIDI controllers, identify the type of
Check the contents of EXT-HCONT registers 5-5 and 5-6 to identify the type of controller data), retrieve the corresponding control data from CONTROL DATA RAM according to the identification result, and
Change the range using definition data indicating the mode of panning control in CONT RANGE registers 5-7 and 5-8 (RANGE processing 8-3), and PAN the result.
Write to OUT RAM (8-4).

In RANGE processing 8-3, 0:L→R 1:R→L 7F-DATA 2:C→L 40-DATA/2 3:L→C DATA/2 4:C→R 40+DATA/2 5:R →C 7F-DATA/2 (here, DATA is the operator data selected from CONTROL DATA RAM).

Details of the AUTO mode processing 6-5 are shown in FIG. (a) PAN1 is the AUTO mode processing of the first system (A system), (b) PAN2 is the second system (B system)
This is AUTO mode processing.

In the case of the first system, in step 9-1, bit 3 of MODE register 5-0 is tested to identify whether automatic panning of the first system is on or off.
Using the data in AUTO DEPTH registers 5-11 (data modulated with the selected automatic pan depth modulation control data when AUTO-CONT is on), calculate the address value for the sine table. Then, access the sign table and convert the sign (sin1 creation process 9-2),
Write it to PAN OUT1 (9-2).

In the case of the second system, select MODE in step 9-4.
Test bit 4 of register 5-0 to identify whether automatic panning is on or off for the second system. If it is off, end the process; if it is on, test bit 5 of MODE register 5-0 in step 4-5 to start the system. Determine whether independent auto-panning or system-synchronized mono auto-panning is specified,
If system independent, AUTO RATE register 5-1
0. Create panning data unique to the second system using the data in the AUTO DEPTH register 5-12 and the sign table (sin2 creation process 9-6),
Write to PAN OUT2 (9-8), and if the system is synchronized, copy the contents of PAN-OUT1 to PAN OUT2 so that the same panning control as the first system is performed (9-7, 9-8).

PAN data creation process 2-2-7, 2-2-8
(Figures 6 to 9), PAN OUT RAM
Panning data written in (Figure 5C)
PAN OUT1 and PAN OUT2 are PAN control processing routines 2-3-1 activated by timer interrupts.
(Fig. 2C), it is read out and output from the microcomputer 1-2 to the D/A of Fig. 4.
It is set in converter 4-5. As a result, the panning effect generators VCA1 and VCA2 are controlled, and the sound images of the respective systems of musical tones are controlled. Microcomputer 1-2 is PAN
In the control process, an analog signal corresponding to the data taken out from PAN OUT1 is output from the output terminal OUT1 of the D/A converter 4-5, and the PAN
An analog signal corresponding to the complement of the data taken out from OUT1 is sent to the output terminal of the D/A converter 4-5.
The analog signal that is output from OUT3 and corresponds to the data taken out from PAN OUT2 is the output terminal.
The D/A converter 4-5 is set so that an analog signal corresponding to the complement of the signal outputted from OUT2 is outputted from the output terminal OUT4.

<Operation of panning effect generator during automatic panning> FIGS. 10 to 12 illustrate input and output signals of the panning effect generators (VCA1, VCA2) under automatic panning mode. Figure 10 relates to the musical tones of the A system and their panning effects, Figures 11 and 12 relate to the musical tones of the B system and their panning effects, and in Figures 10 and 11, the A and B systems are automatically automatically A case where panning control is performed is shown, and FIGS. 10 and 12 show a case where A system and B system are synchronized and mono automatic panning control is performed.

To the first input terminals IN1 of the VCAs 1 and 2, musical tone signals of system A as illustrated in FIG. 10a are input. Synchronizing signals with a phase shift of 180° as illustrated in FIGS. 10b and 10c are input to the first control terminals CONT1 of the VCAs 1 and 2. At this time, VCA1, 2
The musical tone signals shown in FIGS. 10d and 10e are outputted to the first output terminal OUT1. As a result, the sound image formed when the A-system musical tone signal is output through the left and right stereo speakers 1-15R and 1-15L changes as shown in FIG. 10f.

When system-independent automatic panning control is performed, the panning effect (f) for musical tones in system A as shown in FIG. occurs for. Since this is system independent, the 11th
As shown in b and c in the figure, the second control input CONT2 of VCA1 and VCA2, which controls the amplitude of musical tones of B system,
This is because a control signal that is generally different from the first control input CONT1 (here, the amplitude is the same but the synchronization (the time for the sound image to go back and forth from left to right) is different) is provided. On the other hand, when system synchronization automatic panning control is performed, the same control signal is given to system A and system B (Fig. 10b, c and 1).
2), a synchronized panning effect (f in FIG. 10 and f in FIG. 12) will occur.

<Modifications> Although the description of the embodiments has been completed above, various modifications and changes can be made without departing from the scope of the present invention.

For example, in the above embodiment, MIDI messages from an external MIDI controller (external performance control input device) and messages from the main unit's controller set (performance control input device) are handled without distinction in terms of musical tone generation and output. However, they may be partially differentiated or treated completely independently. When completely differentiated, functionally,
There are electronic musical instruments that act as slaves to MIDI controllers, and electronic musical instruments that use the main unit's performance control input device as a master.
This means that it can be an electronic instrument that only has one function (an electronic instrument that is simply a MIDI slave, or a standalone electronic instrument that does not have MIDI functionality).

In addition, as a MIDI mode, an electronic musical instrument that can operate in a mode called multi-channel mode (here, used to include the case of omni-off mono) that can identify and receive messages from multiple different MIDI channels by channel. However, in such a case, independent automatic panning control may be performed for each MIDI channel according to the present invention. That is, MIDI
This means that one channel is considered a system of musical tones.

Furthermore, in multi-channel mode, each
The present invention can also be applied to the case where a plurality of musical tone systems are assigned to the pronunciation information of a MIDI channel.

In the case of this invention, a system is a unit in which panning control can be performed independently. Therefore, in order to control the panning of musical tones in N systems, it is necessary to have a function to independently change the volume balance of musical tones for each of the N systems. When devices (typically voltage controlled amplifiers) are used, the number of devices is N times the number of stereo channels (S). However, when adding amplitude modulation to a digital device, hardware can be shared by using time division (TDM) technology. The number of stereo channels can be any number greater than or equal to two. Also, any suitable communication interface other than MIDI may be used.

[Effects of the Invention] As described in detail above, in the panning control device of claim 1, the position of the sound image of each musical tone varies periodically, and at least the speed of movement of the sound image differs depending on the system. It is possible to automatically change the sound image independently for each system, and it is possible to provide a performance effect using automatic panning with a higher degree of freedom than ever before.

The panning control device according to claim 2 further sets prohibition/permission of the panning effect for each system, so it is easy to change the panning effect when automatic change of the sound image is not desired for some or all systems. Can correspond to

The panning control device according to claim 3 further uses means for unifying the panning control in the same form for a plurality of musical tones, so that the user can easily adjust the panning control settings that differ for each system. After making the input, it is possible to save the effort of selecting the systems one by one again and inputting the same data this time.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of an electronic musical instrument to which the present invention is applied, and FIG. 2A is a timer interrupt processing diagram for importing the states of the keyboard 1-1 and switches 1-3 shown in FIG. 1 into the microcomputer 1-2. Flowchart: FIG. 2B is a flowchart of a timer interrupt routine in which processing for controlling various musical tone characteristics is performed; FIG. 2C is a flowchart of the panning effect generator 1 of FIG. 1.
- Flowchart for executing control to 12, second
Figure D is a flowchart of MIDI reception processing, 2nd E
The figure is a flowchart of MIDI communication processing, Figure 3 is a flowchart of the overall operation, Figure 4 is a detailed view of the panning effect generator 1-12 of Figure 1 and its surroundings, and Figure 5A is a diagram of the panning effect generator 1-12 of Figure 1 and its surroundings. placed in RAM1-9
PAN parameter RAM configuration diagram, Figure 5B is the first
CONTROL DATA placed in RAM1-9 in the diagram
A configuration diagram of RAM (operator data RAM), Figure 5C shows the PAN OUT located in RAM1-9 in Figure 1.
RAM (Pan output RAM) configuration diagram, Figure 6 is the overall flowchart for creating pan data, Figure 7 is a flowchart for creating pan data in fixed mode where the sound image is fixed, Figure 8 is the sound image is the controller Figure 9 is a flowchart for creating panning data in the automatic panning mode in which the sound image is automatically controlled. Figure 10 is a flowchart for creating panning data in the automatic panning mode. A waveform diagram illustrating various signals of the panning effect generator, FIG. 11 is the first waveform diagram shown in FIG. 10.
FIG. 12 is a waveform diagram illustrating various signals of the panning effect generator of the second system when independent automatic panning control is performed for the second system for panning of the system. Various signals of the panning effect generator of the second system when automatic panning control is performed in synchronization with the first system are illustrated. 1-1...Keyboard, 1-2...Microcomputer, 1-3...Switch, 1-4...Controller, 1-6...MIDI, 1-8...ROM, 1
-9...RAM, 1-10...Sound source, 1-12...
...Panning effect generator.

Claims (1)

[Scope of Claims] 1 System-specific musical tone signal forming means for grouping musical tone signals generated for each sound source channel in a sound source having a plurality of sound source channels into systems, and system-specific musical tones output from the system-specific musical tone signal forming means. The system has a characteristic in which the position of a sound image for each system formed by outputting a signal to the outside varies periodically, and automatic panning control is provided in which at least the speed of movement of the sound image is varied for each system. According to the system-specific automatic panning setting means to be set, and the setting contents of the system-specific automatic panning setting means, panning control is performed on the system-specific musical tone signals outputted from the system-specific musical tone signal forming means, and automatic panning effect is created for each system. A panning control device comprising system-specific automatic panning effect adding means for adding system-specific automatic panning effect. 2. The panning control device according to claim 1, further comprising a system for prohibiting automatic panning control for musical tone signals of any system set by the system-specific automatic panning setting means for each system without rewriting preset contents. It further comprises a separate automatic panning prohibition means, and the system-specific automatic panning effect adding means adds an automatic panning effect to musical tone signals of systems whose automatic panning state is prohibited by the system-specific automatic panning prohibition means. A panning control device that prevents panning from occurring. 3. The panning control device according to claim 1, wherein the independent form of automatic panning control for musical tone signals of a plurality of systems set by the automatic panning setting means for each system can be performed in the same manner without rewriting the preset contents. further comprising automatic unified panning setting means for unifying the form, and when the automatic unified panning setting means sets the same form of panning control for musical tone signals of a plurality of systems, the system-specific automatic panning effect adding means The panning control device is characterized in that the same type of panning control as described above is performed for the plurality of systems.