JP2650583B2 - Panning 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 an electronic musical instrument, and more particularly to a panning control device for acoustically panning a musical tone related to a performance.

[0002]

2. Description of the Related Art Conventionally, there has been known a panning control apparatus for automatically controlling the amplitude of tone signals of left and right channels related to performance and automatically moving the position of a sound image formed in a sound field. ing. However, this type of automatic panning control device constantly calculates a panning parameter relating to the sound image position and sends a panning control signal to an amplitude control unit such as a VCA in order to periodically move the sound image position. Therefore, control by the player could not be performed at all, and in particular, the sound image started to move from an unexpected place at the start of the performance, which was often contrary to the intention of the player.

[0003]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a panning control device capable of performing automatic panning control in accordance with a player's expectation.

[0004]

According to the present invention, in order to achieve the above object, a counting means for counting at a predetermined time interval, and a panning control signal generating means for generating a panning control signal in accordance with the count output of the counting means. Means, and a performance start detecting means for detecting the start of a performance, wherein the panning control device comprises a panning effect generating means for controlling the amplitude of the tone signal distributed to the plurality of tone signal channels based on the panning control signal. An initializing means for initializing the counting means to a predetermined value when the performance start is detected by the performance start detecting means is provided.

According to this configuration, when the performance is started, the counting means is initialized to a predetermined value by the initialization means, so that the sound image of panning is started from a position corresponding to the initialization. Therefore, the position and phase of the panning sound image at the start of the performance can be known in advance, and a panning effect that meets the player's expectations can be easily obtained. Preferably, by providing means for variably setting a value for initializing the counting means, panning of the sound image can be started from a position designated by the player.

As the performance start detecting means, for example, a performance input device (for example, a keyboard,
A means for detecting a note-on event given from a sequencer or the like as an event indicating the start of performance can be used. Alternatively, it can be constituted by a measuring means for measuring the pause time of the performance, and a means for detecting a given note-on event as an event indicating the start of the performance when the measured value of the measuring means is equal to or more than a predetermined value. .

Furthermore, a panning control device for controlling a sound image start position for each performance part can be provided by the present invention. That is, a plurality of counting means provided for each performance part and performing a counting operation at predetermined time intervals, a panning control signal generation means for generating a panning control signal for each performance part according to the count output of the counting means, A panning effect generating means for controlling the amplitude of the tone signal distributed to the plurality of tone signal channels based on the panning control signal;
Performance start detection means for detecting the start of performance for each performance part; and counting means for the performance part among the plurality of counting means when the performance start detection means detects the start of performance of the performance part. A panning control device comprising: a performance-part-by-performance-part initialization unit for initializing to a predetermined value.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Basic Example FIG. 1 is an automatic panning function diagram of a panning control device 1 according to the present invention applied to control of a panning effect by two-channel synthesis. An auto pan counter 10 (counting means) is constituted by the pan rate register 20 and the adder 30, and a parameter (pan rate) that determines an automatic panning speed in the pan rate register at predetermined time intervals.
The adder 30 addresses the pan waveform memory 80 with the count output of the auto pan counter 10 and reads out the pan waveform data in the memory 80. The read pan waveform signal is converted by the first span control unit 100 into an automatic panning range (span) from the pan range register 90.
And a panning control signal for the right channel. With the right channel panning control signal, the tone signal of the right channel among the tone signals distributed to the left and right channels is converted to the amplitude modulation section 12.
At 0 the amplitude is modulated. Further, the read-out pan waveform data is scaled by the pan range parameter from the pan range register 90 by the second span control unit 100 which performs a complementary operation with the first span control unit 100, and is used for the left channel. The tone modulation signal of the left channel is amplitude-modulated in the amplitude modulation section 130 by the panning control signal.

Therefore, the pan waveform memory 80, the pan range register 90, and the first and second span controllers 110 constitute a panning control signal generating means for generating a panning control signal in accordance with the count output from the counting means.
Multiple (two in the figure) by the amplitude modulators 120 and 130
The panning effect generating means is configured to control the amplitude of the musical sound distributed to the musical tone channel according to the panning control signal from the panning control signal generating means. In addition,
A conversion table memory such as the pan waveform memory 80 is not always necessary, and an arithmetic type conversion unit that calculates pan waveform data (for example, periodic data such as a sine wave) from count data according to an arithmetic routine can be used. Further, the amplitude modulating means such as 120 and 130 can be realized by either an analog type (typically, an analog voltage control amplifier (VCA)) or a digital type (for example, a digital multiplier).

The tone signals amplitude-modulated by the left and right amplitude modulators 120 and 130 are converted into acoustic signals by left and right speakers (not shown), respectively. Since the relative volume ratio between the sound signals output from the left and right speakers is automatically controlled by the left and right panning control signals (outputs of the span control units 100 and 110) from the panning control signal generation means, The position of the sound image formed by the output also changes correspondingly, thereby providing an automatic sound panning effect.

By the way, if the panning control device is constituted only by the above-described elements, the panning effect cannot be started from a desired sound image position (panning phase) because the auto pan counter 10 performs free running.

Therefore, according to the present invention, the performance input device 6
Performance start input detector 7 for detecting a performance start input from 0
0, the selector 50 on the count output line of the auto pan counter 10 is controlled by the performance start detection signal from the performance start input detector 70, and the selector 50 outputs the start position from the start position register 40 instead of the count output. The data is selected, and the auto pan counter 10 is initialized to the value of the start position data. As a result, the pan waveform memory 80 of the panning control signal generating means is addressed from the value of this start position data, and the panning phase (the position of the sound image and its moving direction) corresponding to the data of the start position register 40 is used. A panning effect of the musical tone at the start of the performance occurs.

Specific Example Hereinafter, a specific example of an electronic musical instrument incorporating the functions described in FIG. 1 will be described. <Overall Configuration> FIG. 2 shows the overall configuration of the electronic musical instrument 2 according to this example. The keyboard 2-1 detects, as information of the operated key, key pressing speed, key releasing speed data, and key pressure data after key pressing (after touch data on the keyboard), including the key code. Is sent to a microcomputer (CPU) 2-2 as a control device. The switch 2-3 comprises a series of function switches, and the state of each switch is sent to the microcomputer 2-2 for processing. The controller 2-4 constitutes a performance operator other than the keyboard 2-1. The controller 2-4 includes a foot volume operated by a foot, a modulation wheel for changing a tremolo depth, and one or more preset Each controller includes an operator such as a definable wheel for acting on a musical tone component, and each operator data is sent to the microcomputer 2-2. The display unit 2-5 includes an LED, an LCD (liquid crystal) display, and the like.
Under the control of -2, the current playing state, the operating state (system state) of the electronic musical instrument 2, setting data, and the like are displayed. MI
DI2-6 is an external interface used by the microcomputer 2-2 to communicate data with an external electronic musical instrument, sequencer, or the like. Another external interface 2-7 is a microcomputer 2-2.
The microcomputer 2-2 takes in data or programs from the IC card or writes data or programs into the IC card via the external interface 2-7. The microcomputer 2-2 is a ROM 2
-8 and a RAM 2-9. A ROM 2-8 stores a program for operating the electronic musical instrument 2, timbre data, performance data, and the like, and a RAM 2-9 stores data used during execution of the program. For example, timbre data, timbre control data, performance data, performance state data, and the like are temporarily stored.

The sound source 2-10 is a microcomputer 2-
Under the control of 2, a plurality of voice tone signals are generated.
As the sound source 2-10, for example, Japanese Patent Application No. 62-2494
No. 67, iPD (interactive phase distortion type) sound source can be used. The digital tone signal generated by the sound source 2-10 is divided into D / A signals for each system (here, two systems).
The signal is sent to the converter 2-11 and is converted into an analog tone signal of each system. Analog tone signals of respective systems from the D / A converter 2-11 are input to a panning effect generator 2-12 controlled by the microcomputer 2-2.
The panning effect generator 2-12 has two pairs (two systems) of VCAs for controlling the amplitude of the analog tone signal of each system in a complementary manner. Of the four VCAs,
The two VCA outputs are mixed to form stereo right and left channel signals. This allows
The localization of the sound image is controlled for each system. Unnecessary frequency components of each stereo channel signal from the panning effect generator 2-12 are removed by the filter 2-13, and the amplifier 2-1
After being amplified at 4, the sound is emitted from the left and right speakers 2-15.

<Basic Operation> Next, a basic operation of the electronic musical instrument 2 will be described with reference to FIGS. FIG. 3 shows a first timer interrupt routine started at regular intervals. In this routine 3-1, the state of the keyboard 2-1 and the state of each switch of the switch 2-3 are transmitted to the microcomputer 2-2. It is captured.

FIG. 4 shows a second timer interrupt routine. In step 4-1 the data of the controller 2-4 is fetched by the microcomputer 2-2, and the comparison with the previous control data shows the change of the control data. The control data change process 4-2 is executed if the presence or absence of the change is checked. In the next step 4-3, an operation for realizing the LFO vibrato is executed. That is, the current vibrato data is generated from the data (reference rate, reference depth, control data for modulating vibrato parameters and MIDI data) acting on the vibrato. Next, in step 4-4, LFO vibrato and MID are set according to the pitch change setting state of the system.
An operation for changing the pitch of the musical tone is performed based on the I data and the control data, and the result is sent to the sound source 2-10 to control the pitch. Next, in step 4-5, data calculation for realizing LFO tremolo (groll) (including calculation processing necessary when control data or MIDI data is modulated on tremolo or growl) is performed. . Next, in step 4-6, calculations for realizing that the LFO tremolo, MIDI data (for example, after touch data), and control data actually change the tone and volume of the musical tone are performed, and the result is sent to the sound source 2-10. Tones of musical sounds,
Control the volume. Subsequently, in step 4-7, pan data generation processing for generating a panning effect for the first system tone is performed, and in step 4-8, pan data generation for generating the panning effect for the second system tone is performed. Perform processing.

FIG. 5 shows a third timer interrupt routine. In this routine 5-1, the microcomputer 2-2 for causing the panning effect generator 2-12 shown in FIG. Sends a control signal. FIG. 6 shows that when MIDI data is sent, M
This is a MIDI reception processing routine 6-1 activated by an interrupt from the IDI interface 2-6. Here, only a reception process (such as setting a data in a MIDI-related buffer on the RAM 2-9) is performed. is there. FIG.
Is a MIDI transmission processing routine 7-1 activated by interruption from the MIDI interface 2-6 when MIDI data is transmitted to an external electronic musical instrument or the like;
Thereby, the transmission speed of MIDI data is maintained.

FIG. 8 shows a general flow (main program) of the microcomputer 2-2. First, when the power is turned on, an initialization routine 8
At this point, the initial setting for the sound source 2-10, the setting of the initial display data on the display unit 2-5, the initial setting of each control data, the calculation data, and the like are performed. In step 8-2, a change in the state of the switch is determined with reference to the result of the interrupt routine (FIG. 3) for keyboard / switch data acquisition. If there is a change, the switch change processing routine 8-3 is executed. Run. In this routine 8-3, the setting of the performance mode, the setting of the timbre data, the setting of the MIDI control data, the setting of the pan control data, the setting of the tone control data for the tone generator 2-10, the display data on the display unit 2-5 Setting, initial setting of control data, control of the panning effect generator 2-12, transmission and reception of data or programs with the external interface 2-7 of the IC card,
The control of the MIDI interface 2-6 is executed according to the state of the system (hereinafter, referred to as a menu).

Next, in step 8-4, it is determined whether or not MIDI data has been input from the MIDI interface 2-6 with reference to the check flag set in the MIDI reception routine 6-1 (FIG. 6). M if present
An IDIIN processing routine 8-5 is executed. In this input processing routine 8-5, MIDI input data is identified,
According to the result, the corresponding internal performance mode is changed, tone data is changed, pan control data is changed, tone control data is changed, tone control (note on / off, etc.), display data control, MIDI interface 2-6 is changed. Control and the like are executed according to menus and setting data.

Next, at step 8-6, a change in the state of the keyboard 2-1 is determined from the processing result of the interrupt routine 3-1 (FIG. 3), that is, whether or not a key is pressed, whether or not a key is released. In the case of (1), the key change processing routine 8-7 performs data change upon key depression and key release, sound generation assignment, sound generation processing, mute processing, control of the MIDI interface 2-6, and the like. The present invention relates to a technique for controlling a panning effect, and the panning control in this example will be described in detail below.

<Panning Effect Generator> FIG. 9 shows the panning effect generator 2-12 of FIG. 2 and its peripheral circuits in detail. Here, the sound source 2-10 is composed of a plurality of sound source channels (tone generation channels) that operate in a time-division manner, and the tone signals generated for each tone channel are accumulated for each tone system at the output stage of the tone source 2-10 ( And input to the D / A converter 2-11 in a time sharing manner. D
The / A converter 2-11 converts the digital tone signal for each system into an analog signal, and converts it into a sample / hold circuit (not shown) for each system at the output stage of the D / A converter 2-11. , And are input to a low-pass filter (LPF) 9-1 and a low-pass filter (LPF) 9-2 as analog musical sound signals of a first system (A system) and a second system (B system), respectively. Low pal filter 9
The tone signal of the A-system from -1 is branched into voltage control amplifier pairs (VCA1) 9 for the stereo right channel, respectively.
Input terminal IN1 of the VCA for A system in -3 and a voltage control amplifier pair (VCA2) 9-4 for the stereo left channel
Is input to the input terminal IN1 of the A system VCA. Similarly, the B-system tone signal from the low-pass filter 9-2 is also branched, and the B-system VCA input terminal IN2 in the stereo right channel voltage control amplifier pair (VCA1) 9-3 and the stereo left channel, respectively. The signal is input to the input terminal IN2 of the V-system VCA in the channel voltage control amplifier pair (VCA2) 9-4. Each of these VCAs (voltage control amplifiers) controls the amplitude (volume level) of the input tone signal in accordance with the control voltage applied to its control terminal (CONT).
Is modulated and output from the output terminal (OUT). Each VCA
The voltage applied to the control terminals CONT1 and CONT2 is controlled by the microcomputer 2-2. That is, a total of four digital control data, two per system, are input to the D / A converter 9-5 at the time of panning control from the microcomputer 2-2, where they are converted into analog control voltages, and their outputs OUT1 and OUT3. Output a control voltage for instructing the relative volume of the stereo left channel and the relative volume of the stereo right channel of the tone of the A system, respectively, and output signals OUT2 and OU of the D / A converter 9-5.
From T4, a control voltage for instructing the relative volume of the stereo left channel and the relative volume of the stereo right channel of the B-system tone is output. Complementary control voltages from the outputs OUT1 and OUT3 of the D / A converter 9-5 are input to the control terminals CONT1 of the VCA for the left and right channels of the A system, respectively, and the D / A converter 9- Complementary control voltages from the outputs OUT2 and OUT4 of No. 5 are applied to the control terminal CONT2 of the VCA stereo left channel and right channel VCA. The A-tone signal A-R and the B-system tone signal BR of the stereo right channel output from the VCA 1 are mixed by an adder 9-6, and the resultant signal is filtered as a stereo right channel signal by a filter 2-3 and an amplifier 2-4. Are output from the right speaker 2-15R and output from the VCA 2 and the stereo left channel A tone signal A-L and the B tone signal B-L are mixed by the adder 9-7. -3, left speaker 2-15 via amplifier 2-4
Sound is emitted from L. Next, panning settings in the electronic musical instrument 2 will be described.

<Panning Setting> FIG. 10 shows panning setting input devices 10-2 to 10-6 and a display device 10-1. The panning display device 10-1 is the display device 2 of FIG.
-5, and the upper part of FIG. 10 shows the panning display device 10-1 in the first automatic mode (AUTO).
3 shows an example of the content displayed on the screen. The switch 10-2 is called a PAN / end switch, and is used to enter a panning setting menu. ↑ switch 10-3 and ↓ switch 10-4 are keys for selecting a data input item (entry).
As shown in 1-1, mode, system, waveform, start position /
Fixed position, rate (pan speed), span (pan range),
Each entry of the controller and the MIDI controller can be sequentially and cyclically designated from both directions. Also,
The switches 10-5 and 10-6 are used to input various panning data in various entries and modes. More specifically, the electronic musical instrument 2 is panned in four modes, namely, a fixed mode (FIX mode).
Mode), controller mode (EXT mode), first
Automatic mode (AUTO mode) and second automatic mode (TA
UT mode). Here, the fixed mode is a mode in which the sound image is fixedly used, and the controller mode is a mode in which the sound image is controlled by the operation data from the operation unit of the main body or an external MIDI controller. Is a mode in which the sound image changes automatically. In particular, in the first automatic mode (AUTO), the position of the sound image is changed according to panning parameters (parameters set by the panning setting input device in FIG. 10) set independently of the timbre. Automatically change, 2nd automatic mode (TAUT)
In, the position of the sound image is automatically changed by the panning parameter included in the timbre data. As shown at 11-2 in FIG. 11, when the entry is in “mode”, these four modes can be sequentially and bidirectionally designated by the → and ← switches 10-5 and 10-6. Also, 11-3
As shown in the figure, when the entry is “system”, the operation of the switches 10-5 and 10-6 of → or ← causes the system 1 and the system 2 to operate.
Can be called alternately. Also, the first mode (AUTO)
When the entry is "waveform", the switches 10-5,
By the operation of 10-6, a sine wave (SINE), a triangular wave, a sawtooth wave, and a rectangular wave can be sequentially and bidirectionally designated as a form of the periodic change of the sound image of the automatic panning. Further, as shown in 11-5, when the mode is “AUTO” and the entry is “start position”, the switches 10-5, 10-5
By the operation of -6, the start position and the moving direction (start panning phase) of the automatic panning sound image with respect to the performance start are
When the mode is “FIX” and the entry is “fixed position”, the position of the panning fixed sound image is changed to 32 by operating the switches 10-5 and 10-6 as shown in 11-5. You can choose from different positions.
Further, when the mode is "AUTO" and the entry is "rate", the speed (rate) at which the sound image moves by operating the switches 10-5 and 10-6 as shown at 11-6 within the range of 0 to 63. When the mode is "AUTO" and the entry is "span", the switches 10-5 and 10-6 can be selected.
With the operation described above, the moving range of the automatic panning sound image can be selected and set from 0 to 31 as shown in 11-7.
Further, when the mode is "AUTO" or "EXT" and the entry is "controller", the operation of the switches 10-5 and 10-6 causes the panning range (A
The position of the sound image (EXT) or the position of the sound image (EXT) is determined by the operation of the main unit (after touch AFTER TOUCH, foot volume FOOT UR, modulation wheel M).
OD WHEEL, Definable Operator DEF CO
(N.TROLLER) control, MIDI controller control, or no controller control (OFF)
Can be selected.

Further, as shown in 11-9, the mode is "A".
When the entry is “MIDI controller” in “UTO” or “EXT”, by operating the switches 10-5 and 10-6,
A specific MIDI controller operator (operator numbers 0 to 7) for controlling the panning range (for AUTO) or the position of the sound image (for EXT) can be selected. Further, as shown in 11-10, when the mode is “EXT” and the entry is “span”, the switches 10-5, 10-
By the operation of 6, the panning control mode (moving range and direction of the sound image) by the controller (operator) assigned to the panning effect can be selected.

FIG. 12 to FIG.
2 shows a flow of a panning setting process performed as part of the switch change process 8-3 (FIG. 8). In this flow, a panning-related memory on the RAM 2-9 in which data setting and updating are performed is shown in FIGS. 20.

In FIGS. 16 to 20, the symbol PAN1 relates to the first system (A system) of musical tones.
The symbol indicated by N2 relates to the second system (B system) of musical tones. The electronic musical instrument 2 has a mode called a combination mode (including tone mix, key split, positional crossfade, velocity split, etc.) as an output form of a musical tone. In this mode, a sounding message (the same communication from an external MIDI controller) is performed. Note on / off sent on the channel and note on / off related to the operation of the keyboard 2-1 of the main unit)
Two musical tone systems are assigned. In this combination mode, both PAN1 and PAN2 are meaningful, and in the normal mode in which only one system of musical tones is considered for a pronunciation message, PAN1 corresponds to one system of musical tones and PAN2 is not used (note that PAN2 is not used). In the normal mode, the tone generator 2-10 generates only one system of musical tones (polyphonic), and its output is the D / A converter 2-11 of FIG.
And then take the A line. Of course, there is no tone signal on the line B). In the following description, a combination mode is assumed.

The RA indicated by 16-0 (MODE) in FIG.
M (register) is FIX, EXT, AUT
This register indicates the pan mode of O and TAUT alternatively. FIX mode when bit 0 is “1”, EXT mode when bit 1 is “1”, and AUTO mode when bit 2 is “1”. , When bit 3 is “1”, TAUT
Mode.

FIX-PLACE register 16-1, 1
Reference numeral 6-2 denotes a memory for designating the position of the sound image of the first system tone and the position of the sound image of the second system tone in the FIX mode with a resolution of 31.
5 indicates the left end and 0 indicates the center.

EXT-CONT registers 16-3, 16
-4 are the first system and the second system in the EXT mode, respectively.
This specifies the type of controller (operator) that controls the sound image of the musical tone of the system. When the value is 1, aftertouch (AFTER TOUCH), when 2, the foot volume (FOOT VR), and when 3, the modulation wheel (MOD WHEEL), 4 is a definable controller (DEF CONTROLLER),
In the case of 5, panning control is performed by a MIDI controller (MIDIPAN). When the value is “0”, there is no panning control by the controller (OFF). In the EXT mode, when MIDI control is selected instead of the controller (operator) of the main unit,
Further, it is possible to select which control data of the MIDI control message should be used to control the panning for each system, and the selection result is based on the EXT-MCONT registers 16-5 (first system) and 16-6 (second system). System).

Further, in the EXT mode, a form of panning control by a controller (operator) assigned for a panning effect can be defined (here, a moving range and a direction of a sound image). That is, EXT
-CONT, as shown in the RANGE registers 5-7 and 5-8, the manner in which the sound image is shaken for the controller data values 0 to 7F (H) is changed from left to right (L to R) or right to right.
Left (R → L), center → left (C → L), left → center (L →
C), center → right (C → R) or right → center (R →
C).

In the AUTO mode (first automatic mode), the panning phase START at the start of the performance in the periodic sound image movement, the periodic waveform WAVE of the sound image movement, the moving speed RATE, and the moving width DEPTH (depth) of the sound image. Can be set variably for each system. As shown in FIG.
The O-START registers 17-1 and 17-2 store the first system automatic panning start phase and the second system automatic panning start phase, respectively, and the AUTO-WAVE registers 17-3 and 17-4 respectively store The automatic panning cycle waveform of one system and the automatic panning cycle waveform of the second system are stored, and the AUTO-RATE register 17-5, 1
7-6 are automatic panning speeds of the first system, respectively.
The automatic panning speed of the second system is stored, and the AUTO-D
The EPTH 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. Further, in the AUTO mode, it is also possible to modulate the automatic panning depth with an operator, and it is possible to determine whether or not to perform modulation with the operator, and when performing modulation, which of the operators to modulate. 13,5
-14. P shown in 17-11 and 17-12
The NCNT1 and PNCNT2 registers store count values indicating the addresses of the first and second panning waveform memories, respectively. PNCNT1 and PNC
The lower 4 bits of the NT2 registers 17-11 and 17-12 are address decimal part data, and the waveform value is obtained by interpolation with reference to the address decimal part data.

Similarly, also in the TAUT mode (second automatic mode), the panning control is performed using the setting information corresponding to the case of the first automatic mode (AUTO mode). In FIG. 18, the registers 18-1 to 18-8 are AU
These correspond to 17-1 to 17-8 in the TO mode (FIG. 17), respectively. However, the settings are included in the data belonging to the timbre. Note that PN
CNT1, PNCNT2 counters 17-11, 17-1
2 is also used for panning control in the TAUT mode.

Next, parameter data creation processing and transfer processing based on the set panning parameters will be described. FIG. 19 shows a CONTROL DATA RAM for storing data of the input controls, and AFTER TOUC is used for aftertouch data from the main body.
H, footporium data is FUOT VR, modulation wheel data is MOD WHEEL, definable control data is DEF CONT
The data of each operation element from the ROLLER and MIDI controllers is stored in each register indicated by MIDICONT0 to MIDICONT7. The memory PANOUT RAM shown in FIG. 20 is a panning effect generator 2-12 (VCA1 and VC
A2) for storing pan control output data to be supplied to the first system (PAN-OUT1 (R), PAN-O
UT1 (L)) and the second system (PAN-OUT2 (R))
PAN-OUT2 (L)).

Panning parameter setting processing for the input from the panning input / display device of FIG.
Referring to FIG. 15), first, 12-1 in FIG.
To check whether the PAN / end switch 10-2 has been pressed, and if so, change the EDIT flag to 12-
Execute in 2-12-4. The EDIT flag “ON” indicates a system state in which panning parameters can be set,
Under this system state, the various panning setting functions described in FIG. 11 are assigned to the input switches 10-3 to 10-6.

That is, when any one of the input switches 10-3 to 10-6 is pressed, the operation from 12-1 in FIG.
The process proceeds to the pan edit processing of No. 3, and it is checked at 13-1 whether the editing is being performed. If the switch is not being edited, it is checked whether the switch 10-5 or the switch 10-6 has been pressed (13-2). If the switch 10-5 has been pressed, the current panning mode M is changed to the mode change chart 11- in FIG. (13-3), and the MOD of the PAN RAM is updated.
The update mode M is set in the E register 16-0 (13-
4) The setting contents of the mode are displayed on the panning display device 10-1 (13-5).

During editing, it is checked at 13-6 whether the 押 switch 10-3 or the ↓ switch 10-4 has been pressed, and if it has been pressed, the current entry E is updated according to the entry update chart 11-1 of FIG. Update (13-
7), the entry name is displayed blinking on the screen (13-).
8).

When the switch 10-5 or the switch 10-6 is pressed during editing, 13-1 and 13-6 are pressed.
Thereafter, the flow branches to edit (2) in FIG. 14, and this is detected at 14-1. Then, when the entry E is in the “mode” (14-2), 11- of FIG.
The mode update function shown in FIG.
Is updated (14-3), the updated mode M is set in the MODE register 16-6 (14-4), and the setting contents of the updated mode are displayed on the display screen (14-). 5). When the entry E is “system” (14-6), the system K is updated according to the system update chart 11-3 of FIG. 11 (14-7),
The panning setting contents of the system K are displayed on the display screen (14-8). If the entry E is “position” and the mode M
Is "FIX", the FIX position data is updated (14-14) in accordance with the panning fixed position update chart 11-5 in FIG.
-10), the FIX of PAN RAM system K
It is set in the SPACE register (14-11), and its position is displayed (14-12).

For example, if the entry E is "waveform" (15-1), the waveform ID is updated (15-2) in accordance with the waveform update chart 11-4 of FIG. 11, and the PAN RAM is updated. (15-3), and the waveform name is displayed on the screen (15-4). If the entry E is at the “start position” (15-5), the start position data S (panning start phase data) is updated according to the start position update chart 11-5 in FIG. 11 (15-6). And PAN it
The start position is set in the AUTO-START register of the system K of the RAM (15-7), and the start position is displayed on the panning display device 10-1 (15-8). If the entry E is "Rate" (15-9), the rate data R (panning speed data) is updated (15-10) according to the rate update chart 11-6 in FIG. It is set in the AUTO-RATE register of the RAM system K, and the rate value is displayed on the screen (15-1).
2). If the entry is "span" (15-1
3) According to the span update chart 11-7 in FIG. 11, the span data P is updated (15-14), and the
It is set in the AUTO-DEPTH register of the RAM system K (15-15), and the updated span value is displayed on the display device 10-1 (15-16). If the entry is "controller" (15-17), the controller identification data C (0-5) is updated according to the controller update chart 11-8 in FIG.
Set in the AUTO-CONT register of M system K,
Displays the span controller name on the screen. When the entry is "MIDI controller", it is checked whether the controller C is "MIDI" (1.
5-21), if it is MIDI, the MID in FIG.
MIDI according to I controller update chart 11-9
Update the controller program NO from the controller (15
-22), the EXT-M of PAN RAM system K
It is set in the CONT register (15-23), and the MIDI operator program NO is displayed on the panning display device 10-1 (15-24).

Referring back to FIG. 14, the entry E is being edited.
Is “span” and the mode is “EXT”, and if the → or ← switch is pressed (14-14), the span mode data I according to the span update chart 11-10 in FIG.
D is updated (14-15), and it is set in the EXT-CONT-RANGE register of the system K of the PAN RAM (14-16) and displayed on the screen (14-17). The mode is “EXT” when the entry E is “controller” or “MIDI controller” during editing.
When the → or ← switch is pressed at the time of (14-1)
8, 14-19), 11-8 or 11-9, the controller ID is updated (14-2).
0), the EXT-CON of the system K of the PAN RAM
T register (when entry E is “controller”) or EXT-MCONT register (when entry E is “MI
DI ”controller) (14-2
1) Perform the corresponding controller ID display processing (14)
-22).

<Panning data creation processing and transfer processing>
The generation of the panning control output data to be given to the panning effect generator 2-12 is performed according to the panning parameter setting processing flow 4-7 and 4-8 of the timer interrupt routine (FIG. 4) in accordance with the panning parameter setting described above. Performed on the system.

That is, as shown in FIG. 21, a pan mode is identified, and processing according to the mode is performed. FIG.
According to the flow of 1, the bit 0 of the MODE register 16-0 (FIG. 16) is tested in step 21-1.
If "1" (FIX mode), FIX mode processing 21-2
Is performed, and if bit 0 = 0 of MODE, bit 1 is tested (21-3), and if "1" (EXT mode), E is
XT mode processing 21-4 is performed. If bit 1 = 0, bit 2 is tested (21-5). If "1" (AUTO mode), AUTO mode processing 21-6 is performed. If bit 2 = 0, TAUT is performed. TAU
T mode processing 21-7 is performed.

The details of the FIX mode processing are as shown in FIG. 22. In step 22-1, the FIX-PLACE register (register 16-1 for the first system, register 16-2 for the second system) Data is loaded, and if the polarity (POL) is right (+), right data conversion is performed (22-
If the polarity is left (-), left data conversion is performed (22-2, 22-4). Specifically, FIX-PLA
The CE data 0 to F (H) are converted to 0 to 3F. If the polarity is right, 40 is added, and if the polarity is left, subtracted from 40. Then, this data is stored in PAN-OUT1 (R) or P in FIG.
Write to AN-OUT2 (R) and its complementary (40
Data (symmetric with respect to PAN-OUT1 (L) or P
Write to AN-OUT2 (L) (22-5).

FIG. 23 shows details of the EXT mode processing.
The data of the EXT-CONT registers 16-3 (for the first system) and 16-4 (for the second system) are loaded and tested (step 23-1). The type of the controller (operator) is identified (for a MIDI controller, EXT-H
Check the contents of the CONT registers 16-5 and 16-6 to identify the type of the operator data.)
The corresponding control data is taken out from the TROL DATA RAM (23-2), and the EXT-CONT
The range is changed with the definition data indicating the mode of the panning control in the RANGE registers 16-7 and 16-8 (RA
NGE processing 23-3), and store the result in PAN OUT RAM
(23-4).

In the RANGE process 23-3, for the right channel PAN-OUT (R), 0: L → R unchanged 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 (where DATA is CONTROL DATA RAM
(For the left channel PAN-OUCT (L), an operation is performed in which R is read as "L" and L is read as "R").

FIG. 2 shows the details of the AUTO mode processing 21-6.
It is shown in FIG. First, the PNCNT1 register 17 is read in 24-1.
AUTO-RAT in -11 (for the first system) or PNCNT2 register 17-12 (for the second system)
E1 register 17-5 (first system) or AUTO-RAT
The value of the E2 register 17-6 (second system) is added. Next, the AUTO-WAVE register 17-3 (17-4)
Using the values of PNCNT1 and PNCNT1 (PNCNT2), the panning waveform memory is referred to and the panning waveform values (0 to 0) are referenced.
7F), and the result is set in the A register (24-2). Note that the AUTO-WAVE register value indicates the base address of each sine wave, triangular wave, sawtooth wave, and rectangular wave panning waveform memory, and the integer part of the PNCNT register value indicates the relative address of the panning waveform memory indicated by the AUTO-WAVE register value. . Further, A in 24-3
Check the UTO-CONT register 17-9 (17-10) to see if it is "OFF" (a state in which the panning range is not controlled by the controller).
FF ", the span B is set according to the contents of the AUTO-DEPTH register 17-1 (17-8) (24-4), otherwise the AUTO-CONT
CONTROL DATA RAM (AUTO
-AUT not shown when CONT value is "MIDI"
CONTROL DA indicated by the O-MCONT register value
(TA RAM) data is set in span B (24
-5). Then, a constant 40 is added to the data X obtained in accordance with (A-40) × B, and the result (0 to 7F) is used as the right channel panning control output data.
N-OUT1 (R), PAN-OUT2 for system 2
(R), similarly, add 40 to the data obtained in accordance with (3F-A) × B (this corresponds to -X), and set the result (0 to 7F) as left channel panning control output data of system 1 When PAN-OUT1 (L), system 2
Is written to PAN-OUT2 (L) (24-
6).

In the TAUT mode processing (FIG. 25),
Panning control output data is generated in the same manner as in the AUTO mode processing except that the parameter memory to be referred to is for the TAUT (25-1 to 25-6).

By the PAN data creation processing 4-7 and 4-8 (FIG. 4: FIGS. 21 to 25), the PAN OUT RA
M (FIG. 20) and the panning data PAN−
OUT1 (R), PAN-OUT1 (L), PAN-O
The UT2 (R) and PAN-OUT2 (L) are read out and output from the microcomputer 2-2 in the PAN control processing routine 5-1 (FIG. 5) activated by the timer interrupt, and are output from the D / D in FIG. It is set in the A converter 9-5.
Thus, the panning effect generator VCA1 (9-
3), VCA2 (9-4) is controlled, and the sound image of the musical tone of each system is controlled. That is, in the PAN control process, the microcomputer 1-2 performs PAN control.
An analog signal (analog panning control signal) corresponding to the data extracted from OUT1 (R) and transferred to the D / A converter 4-5 is output from the output terminal OU of the D / A converter 4-5.
An analog signal output from T1 and corresponding to data extracted from PAN-OUT1 (L) is converted to a D / A converter 4-
5 is output from the output terminal OUT3 of the PAN-OUT2
An analog signal corresponding to the data extracted from (R) is output from the output terminal OUT2, and PAN-OUT2
(L), an analog signal corresponding to the data extracted from (L) is output from the output terminal OUT4.
1. The VCA 2 controls the amplitude of each of the analog tone channel signals of the systems A and B to generate a panning effect. Next, the automatic panning start control performed in response to the performance start in the automatic mode (AUTO or TAUTV) will be described.

<Automatic Pan Start Control> FIG. 26 shows an automatic pan start control flow. This flow process is executed in response to a key press (note-on event) as part of the key press / key release change process 8-7 (FIG. 8). First, it is checked at 26-1 whether the detected note-on event is the first note-on, that is, the note-on indicating the start of performance. If not, the process ends without doing anything. It is checked whether the mode M is “AUTO” (first automatic mode). If the mode M is “AUTO”, an AUTO start process indicated by 260 is executed. First, AUTO-START in 26-3
The value of the PNCNT1 counter 17-11 is initialized according to the contents of the 1 register 17-1, and the right channel panning control output data PAN-OUT1 (R) of the first system and the left channel panning control are based on this initial value at 26-4. The output data PAN-OUT1 (L) is created. The details of this process 26-4 are described above in FIG.
This is the same as the PAN-GEN processing shown in FIG.
PNCNT1 used in 4-3 is, in this case, 26-3
It becomes the value initialized by. As a result, at the start of the performance, the panning sound image of the first system is started from a desired position corresponding to the set value of the AUTO-START1 register 17-1. Similarly, the value of the PNCNT2 counter 17-2 for the second system is initialized at 26-5 according to the contents of the AUTO-START2 register 17-2, and the right channel panning of the second system is performed at 26-6 based on the initial value. By creating the control output data PAN-OUT2 (R) and the left channel panning control output data PAN-OUT2 (L), the panning sound image at the start of the performance of the second system is also set in the AUTO-START2 register 17-2. To start from the position corresponding to.

Another automatic panning start control is the second
In the automatic mode (TAUT) (26-7), the position of the panning sound image for the start of the performance in the TAUT mode similar to the AUTO start process 260 is set as a predetermined position, and the periodic automatic panning is performed from that position. (26-8).

FIG. 27 is a diagram for explaining automatic panning start control. In the automatic mode (AUTO, TAUT) before the first note-on time T1, no musical tone is generated, Under control,
A periodic panning control signal (sinusoidal panning control signals CONT1 and CONT2 are shown in FIGS. 27A and 27B) is applied to VCA1 and VCA2 of the panning effect generator 2-12. According to the operation described with reference to FIG. 26, when the first note-on event is detected at time T1, the panning control signals CONT1 and CONT2 are initialized, and in this case, the phase 0 corresponding to the center (→ left)
° and 180 ° sine wave level. As a result, as shown by the solid line in (c), a desired panning start effect is obtained in which the sound image starts from the center and proceeds to the left.

The detection of the start of performance (first note-on) shown at 26-1 in FIG. 26 can be defined and detected in various ways, examples of which are shown in FIGS. In FIG. 28, a note-on event input in a state where there is no note being sounded is defined as a performance start. That is, when the note-on event is detected, the currently sounding sound is searched for at 28-1. This is, for example, a voice assignment management RAM (not shown)
, A volume envelope is calculated, or a note on / off flag included in the note assignment management data is checked. If there is no currently sounding sound (28-2), it is the first note-on, so FIG.
The process proceeds to 26-2 of No. 6 to execute the above-described automatic mode start processing.

FIG. 29 shows that when a note-on event occurs again after a relatively short pause, such a note-on event is not regarded as the first note-on, but as a continuous act of performance, and after a certain amount of rest. Is defined as the first note-on event. 29-
1 and 29-2 are the same as 28-1 and 28-2.
The TIME is incremented at 3 and the length of time during which no sound is heard at 29-4 is compared with a reference value (preferably a threshold value depending on the tempo). Execute mode start processing. If there is a sound that is ringing, TIME is cleared (29-5).

FIG. 30 shows a flow of automatic pan start control applied to an electronic musical instrument of a type in which performance information is assigned to different systems depending on the types of performance parts and performance input sources (for example, melody keys and accompaniment keys). Here, the start of performance is defined for each system. That is, when a note-on event is detected (30-1), the system K to which the event belongs is determined (30-2), and it is determined whether the event is the first note-on in the system K ( 30-3) If yes, execute automatic panning start processing for the system K (30-4). Thus, even if another performance part continues, automatic panning can be started for each performance part from a desired position by using the first performance input in the performance part as a signal.

Although the embodiment has been described above, various modifications and changes can be easily made within the scope of the present invention. For example, a speaker can be configured with four channels or the number of other channels, and the tone signal of each channel can be automatically amplitude-controlled to provide an automatic panning effect.

[0054]

Finally, the effects of the invention described in the claims will be described. According to the first aspect, when the performance is started, the counting means is initialized to a predetermined value, and a panning control signal is formed in response thereto, and the amplitude control by the panning effect generating means is performed. At the time of the start, the automatic panning of the sound image can be started from a predetermined place, and a panning effect that meets the player's expectation can be obtained. According to the second aspect, the initial value of the performance start of the counting means can be variably set, so that the panning sound image position at the start of the performance desired by the player can be designated in advance, and the panning effect more intended by the player can be obtained. Can be According to the third aspect, since the note-on given in a state where no musical tone is sounding is detected as the performance start, the configuration of the performance start detecting means is simplified. According to the fourth aspect, since the given note-on is detected as the performance start after the performance has been paused for a predetermined time or more, the panning of the sound image can be started from a desired position even when the phrase is restarted.
According to the fifth aspect, the panning sound image start position at the start of the performance for each performance part can be controlled, so that a more rich panning effect can be achieved.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a panning control device according to the present invention applied to generation of a panning effect by two signal channels.

FIG. 2 is an overall configuration diagram of an electronic musical instrument incorporating the panning control function of FIG.

FIG. 3 is a flowchart of switch state capture;

FIG. 4 is a flowchart of a control data change process.

FIG. 5 is a flowchart of a pan control process.

FIG. 6 is a flowchart of a MIDI reception process.

FIG. 7 is a flowchart of a MIDI transmission process.

FIG. 8 is a main flowchart.

FIG. 9 is a configuration diagram around a panning effect generator.

FIG. 10 is a diagram showing a panning setting input device and a display device.

FIG. 11 is a state transition diagram showing functions of the panning setting input device.

FIG. 12 is a flowchart showing details of setting of panning parameters.

FIG. 13 is a flowchart showing details of setting of panning parameters.

FIG. 14 is a flowchart showing details of setting of panning parameters.

FIG. 15 is a flowchart showing details of setting of panning parameters.

FIG. 16 is a diagram showing various memories and registers placed in a PAN RAM.

FIG. 17 is a view showing various memories and registers placed in a PAN RAM.

FIG. 18 is a view showing various memories and registers placed in a PAN RAM.

FIG. 19 is a view showing various memories and registers placed in a PAN RAM.

FIG. 20 is a view showing various memories and registers placed in a PAN RAM.

FIG. 21 is a flowchart showing details of pan data creation.

FIG. 22 is a flowchart showing details of pan data creation.

FIG. 23 is a flowchart showing details of pan data creation.

FIG. 24 is a flowchart showing details of pan data creation.

FIG. 25 is a flowchart showing details of pan data creation.

FIG. 26 is a flowchart for controlling a panning sound image position at the start of a performance in the automatic mode.

FIG. 27 is a diagram showing signals of a panning effect generator relating to panning sound image position control at the start of a performance in the automatic mode.

FIG. 28 is a flowchart for detecting the start of a performance.

FIG. 29 is a flowchart for detecting the start of a performance in another manner.

FIG. 30 is a flowchart of detecting a performance start for each performance part and controlling a panning sound image start position for each performance part.

[Explanation of symbols]

Reference Signs List 1 panning control device 10 auto pan counter 40 start position register 50 selector 60 performance input device 70 performance start detection unit 80 pan waveform memory 120, 130 amplitude modulation unit 2-1 keyboard 2-2 microcomputer 2-8 ROM 2-9 RAM 2-12 Panning effect generator 16-0 MODE register 17-1, 17-2 AUTO-START register 17-11, 17-12 PNCNT (pan count)
register

Claims (5)

(57) [Claims] A counting means for counting at predetermined time intervals; a panning control signal generating means for generating a panning control signal in accordance with a count output of the counting means; and a tone signal distributed to a plurality of tone signal channels. A panning effect generating means for controlling the amplitude based on a panning control signal; and a panning control device comprising: a performance start detecting means for detecting the start of a performance; and A panning control device comprising: an initialization unit that initializes the counting unit to a predetermined value. 2. The panning control device according to claim 1, further comprising initial value setting means for variably setting said predetermined value for initializing said counting means. 3. The panning control device according to claim 1, wherein said performance start detecting means has means for detecting a note-on event given in a state where no musical tone is sounding as an event indicating the start of said performance. A panning control device, characterized in that: 4. The panning control device according to claim 1, wherein the performance start detection means is provided when the measurement output of the measurement means is equal to or greater than a predetermined value. Means for detecting the given note-on event as an event indicating the start of the performance, and a panning control device. 5. A plurality of counting means provided for each performance part and performing a counting operation at predetermined time intervals; a panning control signal generation means for generating a panning control signal for each performance part in accordance with the count output of the counting means; Panning effect generating means for controlling the amplitude of a tone signal distributed to a plurality of tone signal channels for each performance part based on the panning control signal; and a panning control device comprising: Means for initializing a performance part among the plurality of counting means when a start of performance of a performance part is detected by the performance start detection means. Means, comprising: a panning control device.