JP2643405B2 - Electronic musical instrument - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument that controls sound generation while controlling a sound image position of a musical sound.

[Conventional technology]

2. Description of the Related Art In recent years, electronic musical instruments capable of outputting not only monaural sound but also stereo sound have been developed. In this case, a device for distributing musical sounds to left and right channels has been developed.

As a conventional example of such a device, for example, two different tone outputs are generated by adding different LFO vibrato or LFO tremolo effects to a tone, and these tone are output to a sound image position preset by a player, for example. There is something to sort left and right channels. Alternatively, there is a control method in which the above two types of musical tones are randomly distributed between the left and right channels.

[Problems to be solved by the invention]

However, in the above-mentioned conventional example, the musical sound is not distributed to the left and right channels by the performance operation, but is distributed to the left and right channels irrespective of the performer's will, and the stereo effect as intended by the performer can be obtained. There is a problem that it cannot be done.

An object of the present invention is to make it possible to control a sound image position of a musical tone based on a performance operation by a player, thereby obtaining an effect intended by the player.

[Means for solving the problem]

First, the present invention has a sound source means for independently generating a tone signal with a predetermined polyphonic number at each of a plurality of sound image positions. As the means, various types of sound sources such as a frequency modulation type or a phase modulation type digital sound source and a PCM sound source can be applied. For example, a tone signal is generated independently at, for example, a sound image position of a left channel and a right channel of a stereo by time division processing. Alternatively, the tone signal may be generated at the center of the left or right sound image or at the position of the sound image in which the mixing ratio of the left and right continuously changes.
Also, in this case, for example, four sounds, eight
A tone signal is generated independently with a polyphonic number of sounds or the like.

Next, each time the note-on information is input, a tone based on the note-on information is emitted while changing the sound image position in the sound source means, and the tone is already emitted at a predetermined polyphonic number at the sound image position at which the tone is emitted. If there is, a sound image position control means for producing a musical tone based on the note-on information at a sound image position other than the sound image position is provided. In this case, the note-on information is, for example, MIDI (Musical Inst.
rument Digital Interface) Input from a keyboard instrument or the like based on the standard, or input corresponding to a key pressed from a built-in keyboard. Then, every time the note-on information is input, the sound image position control means alternately changes the sound assignment to, for example, the left and right channels in the sound source means, and based on each note-on command,
This is a means for controlling a tone and the like to generate a musical tone. Here, according to the preferred configuration example, when the predetermined sound image position is determined in response to the input of each note-on information, the musical sound of the predetermined polyphonic number is generated at the predetermined sound image position in the sound source means. If it is sounded, the sound image position control means causes the sound source means to generate a musical tone based on the note-on information at a sound image position other than the predetermined sound image position. Also, when the predetermined sound image position is determined,
When the tone of the predetermined polyphonic number is generated at all of the plurality of sound image positions in the sound source means,
The fixed position control means silences the oldest one of the musical sounds generated at the predetermined sound image position in the sound source means and generates a musical sound based on the note-on information.

[Action]

When a performer repeatedly performs a key press operation on a keyboard or the like using a built-in keyboard instrument or the like connected externally via MIDI or the like, the musical tone generated by the tone generator means for each key press is performed. The sound image position changes, for example, alternately between the left and right channels, that is, the player can change the sound image position of a musical tone that is produced by performing a single key press operation. Also,
By playing a chord, for example, a musical tone of a sound image spread in the left and right channels can be generated, and an effect (effect) based on the intention of the player can be obtained. Note that the present invention is not limited to keyboard operation, and even when an automatic performance is performed using a sequencer or the like, the sound image position of a musical tone can be controlled in synchronization with the input of note-on information.

In this case, when the polyphonic number of musical tones at a certain sound image position becomes full, appropriate control can be performed by, for example, distributing to another sound image position.

Further, when the polyphonic number of musical tones at all the sound image positions becomes full, it is possible to cause the musical sound to be generated with the later arrival priority at the sound image position designated by the sound image position control means. Control can be performed.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present embodiment is realized as an electronic musical instrument capable of selecting an arbitrary performance mode from a plurality of performance modes. Among them, a portion related to the present invention is a normal mode (NORMAL MODE) as a performance mode and a keyboard mode (Key Board).
Mode) is related to a note-on control process (described later) when (Mode) is selected.

FIG. 1 is a configuration diagram of an electronic musical instrument according to the present invention. The present embodiment is realized as a tone generator module type electronic musical instrument that receives a MIDI command (including data, the same applies hereinafter) from the outside, controls a tone generator based on the command, and generates a corresponding musical tone. As shown in the figure, it can be realized as a part of a keyboard musical instrument or the like having a keyboard section 16 or a controller 17. As the controller 17, for example, a bender wheel for arbitrarily changing the pitch at the time of performance, a modulation wheel (Modulation wheel) for arbitrarily changing the depth of tremolo and the like can be used.
wheel), and an operator such as a definable wheel that can arbitrarily change data for one or a plurality of preset tone components. In the following description, unless otherwise stated,
The description will be given as a tone generator module controlled based on a MIDI command.

A central control device (hereinafter, referred to as a CPU) 1 performs data processing from each processing unit described later, sends control data for controlling each processing unit, and the like, and controls the entire electronic musical instrument.

The switch unit 3 is a group of various switches, a switch for switching a tone color, a switch for switching a performance mode (described later), and a switch for changing setting states of various control data, performance mode setting data, tone color data, and the like. , Or a volume for changing the value of data. After these pieces of switch information are fetched into the CPU 1 via the bus 2 and processed, data is set or transmitted to each processing form.

The display unit 4 displays the current performance state, setting data value, system setting state, and the like by using an LED or an LCD display.
The data is displayed corresponding to the data sent from the CPU 1 via the bus 2.

The MIDI circuit 5 receives a signal for controlling the tone generator module input from the outside according to the MIDI standard and transfers the signal to the CPU 1 via the bus 2, or conversely, an external electronic musical instrument output from the CPU 1 via the bus 2 Is an interface circuit for transmitting a signal for controlling the communication according to the MIDI standard.

The external interface 6 takes in the data program and the like stored in the IC card, and
This is an interface circuit for writing a program or the like. This circuit is not particularly relevant to the present invention.

The ROM 7 is a read-only memory that stores a program for operating the tone generator module, tone color data, performance data, and the like.

The RAM 8 is a rewritable memory that temporarily stores data, tone color data, tone color control data, performance data, performance state data, and the like used in the program.

The tone generator 9 is a circuit that emits a musical tone while the tone is set and the tone generation state is controlled based on control data input from the CPU 1 via the bus 2, and includes various types such as a PCM tone generator type, a frequency modulation type, and a phase modulation type. Digital sound source circuit can be applied.

The D / A converter 10 is a conversion circuit that converts digital musical sound data from the sound source 9 into a stereo analog musical sound signal.

The panning effect generator 11 is a circuit for adding a panning effect to the stereo analog tone signal from the D / A converter 10 to automatically change the sound image positions of the left and right channels. The state of the panning effect is controlled by a control signal input from the CPU 1 via the bus 2. In addition,
The present invention relates to a kind of panning processing for distributing a tone signal between left and right channels of a stereo.A panning effect generator 11 is a circuit for adding a panning effect at a fixed sound image position or at random at an analog tone signal. There is no particular relation to this embodiment. Of course,
This is for the present embodiment, and it is clear that the sound image position control of the present invention may be performed by such a panning effect generator 11.

The filter 12 is a left and right channel independent filter for removing unnecessary frequency components from the stereo tone signal from the panning effect generator 11.

The amplifier 13 amplifies the stereo output independently for the left and right channels, and the amplified stereo tone signal is emitted from the speakers 14 and 15. When the present embodiment is implemented as a sound source module, the amplifier 13 and the speakers 14 and 15 may be omitted, and the stereo tone signal from the filter 12 may be output to an external audio system connected to the sound source module.

As described above, the keyboard section 16 and the controller 17 are configuration examples in the case where the present embodiment is realized as a part of a keyboard musical instrument. Since the keyboard section 16 and the controller 17 are not directly related to the present invention, the description of the operation thereof is omitted.

Basic operation flow of the present embodiment The operation of the electronic musical instrument having the above configuration will be described below. In addition,
In the operation flowcharts shown below, the CPU 1 in FIG.
It is executed by operating according to the program stored in M7.

The electronic musical instrument according to the present embodiment starts and executes the general operation flowchart of FIG. 5 as soon as the power is turned on. In addition, FIG. 2 to FIG. 4, FIG.
Each operation flowchart of FIG. 22 is executed by an interrupt process. FIGS. 9 and 11 to 18 show the details of each part of the general operation flowchart of FIG.

First, the basic operation flow of this embodiment will be described with reference to FIGS.
The operation will be described according to the operation flowchart shown in FIG. The description will be given with reference to each processing unit in FIG. 1 as needed.

FIG. 2 is a processing flow that is executed prior to the general operation flowchart of FIG. 5 based on an interrupt from the timer (not shown) in the CPU 1 at regular intervals. A process is performed to capture the state of each switch into an area (not shown) of the RAM 8. After executing this processing, the processing returns to the processing in the general operation flowchart of FIG. 5 again.

FIG. 3 is a flowchart showing a process executed when the MIDI circuit 5 receives a MIDI command from an external device (not shown) based on an interrupt from the MIDI circuit 5 in preference to the general operation flowchart of FIG. This is a flow, in S301, a process of taking in a MIDI command received by the MIDI circuit 5 in an area (not shown) of the RAM 8 and a process of setting a flag indicating that a MIDI input has occurred in an area (not shown) in the RAM 8 I do. After executing this processing, the processing returns to the processing in the general operation flowchart of FIG. 5 again.

FIG. 4 shows a case where the present embodiment is realized as a part of a keyboard musical instrument and includes a keyboard section 16 and a controller 17 and the like, and when these are operated, the operation data is output to an external device. In S401, a process of outputting as a MIDI command via the MIDI circuit 5 by an interrupt process based on the above operation is performed in S401. In addition,
This operation is a normal MIDI command output process and is not directly related to the present invention.

FIG. 5 is a general operation flowchart repeatedly executed by the CPU 1.

When the power is first turned on, in S501, initial settings for the sound source 9, setting of initial display data for the display unit 4,
Initialization processing such as initialization of each control data, control data, operation data, and the like in the RAM 8 is performed.

Next, in S502, it is determined whether or not the state of the switch unit 3 has changed. The switch data determined here is detected by the interrupt processing shown in FIG.
Use the switch data incorporated in the.

If there is a change in the switch state according to the above determination, a switch change process is performed in S503. Here, in addition to the setting of the performance mode, the setting of the tone data, the setting of the MIDI control data, the setting of the panning (PAN) control data and the change of each data, the setting of the tone control data for the tone generator 9, the setting of the display unit 4 Data processing, initial setting of control data, control of panning effect generator 11, transfer of data or program with IC card or the like via external interface 6, control of MIDI, etc., all necessary processing according to the system state Is made. This operation will be described later in detail. After the above operation, the process moves to S504.

On the other hand, if there is no change in the switch state according to the determination in S502, the switch change process in S503 is not executed, and the process proceeds to S504.

Subsequently, in S504, it is determined whether or not a MIDI command has been input via the MIDI circuit 5. Note that MIDI
The flag for determining the presence or absence of an input is set in the RAM 8 by the interrupt processing shown in FIG. 3 as described above.

If there is a MIDI input according to the above determination, the MIDI IN process of S505 is executed. Here, the input MIDI command is identified, and corresponding to the data, the internal performance mode is changed, the tone data is changed, the PAN control data is changed, the tone control data is changed, and all processes for these are performed. Control, control of display data, control of MIDI, and the like are processed according to the system state and setting data. Note that this is a portion particularly related to the present invention, and the operation according to the present invention will be described later in detail. After the above operation, the process moves to S506.

On the other hand, if there is no IMIDI input in the determination of S504, S
The MIDI IN process of 505 is not executed, and the process proceeds to S506.

In S506, it is determined whether or not there is a key depression change in the keyboard unit 16. As described in the section of “Configuration of the present embodiment”, this process is executed when the present embodiment is implemented as a part of a keyboard instrument and the keyboard unit 16 is provided. In step S506, the presence / absence of a key depression change is determined in order to reflect the sound generation control.

If a key press / release operation has been performed, a key press change process is performed in S507. This processing is processing such as data change, sound generation assignment, sound generation processing, mute processing, MIDI control, etc., associated with a key press and release operation, but is the same as the operation of a normal keyboard instrument. Does not matter, and the details are omitted.

After the above processing or when the key depression has changed by the determination in S506, the processing returns to S502, and the processing in S502 to S507 is repeatedly executed.

When the present embodiment is realized as a tone generator module type electronic musical instrument having no keyboard section 16, S506 and S5
It is not necessary to execute the process of 07.

Outline of pronunciation mode in this embodiment In the basic operation flow of this embodiment described above, a part particularly relevant to the present invention is the MIDI IN process of S505 in the general operation flowchart of FIG. Prior to the description, an outline of the pronunciation mode of the electronic musical instrument according to the present embodiment will be described.

In the present embodiment, the maximum number of polyphonic sounds (hereinafter referred to as polyphonic (Poly) number or simply Poly) is realized as a sound source capable of simultaneously generating eight sounds and a maximum of eight timbres.

It has three performance modes: a normal mode (NORMAL MODE), a combination mode (COMBINATION MDDE), and a multi-polyphonic mode (MULTI.POLY MODE). In NORMAL MODE, 8 for one tone
The sound of the sound Poly can be pronounced. COMBINATION MODE has two sounding areas and four tones per tone for each area
Poly can be assigned. That is, in the MULTI.POLY MODE, it is possible to produce a two-tone mixed tone with four-tone Poly.
Eight sounding areas, one tone for each area 0-8
Sound Poly can be assigned. However, MULTI.POLY MODE
The total number of Poly in all areas will not be greater than 8 sounds.

Further, for each of the three performance modes, NORMAL
In MODE and COMBINATION MODE, respectively, Keyboard Mode (Key Board Mode), Kidder Mode (Guitar Mod)
e) and wind instrument mode (Wind Mode) can be selected alternatively. In the MULTI.POLY MODE, the Key Board Mode is fixedly set.

FIG. 6 shows a tone generation mode of this embodiment when each MIDI command is input via the MIDI circuit 5 in FIG. 1 in each of the performance modes. In the table shown in the figure, the Note on / off command is a command for instructing the start or end of sounding.
The Pitch Dender command is a command for instructing pitch bend (pitch change), and the After Touch command is a command for instructing after touch (key pressure after a key is pressed).
Further, the tone change command is a command for instructing a change of a tone to be generated, and the control change command is a command for instructing a change of various controls such as a modulation wheel, a foot volume, portamento data, a master volume, and a foot switch.

In Figure 6, Key B in NORMAL MODE as the first performance mode
If oard Mode is selected, note on / off, pitch
For all commands of Bender and After Touch, tone change and control change, it works only when a fixed predetermined MIDI channel is specified, other
MIDI channel commands are ignored.

If Guitar Mode is selected in NORMAL MODE as the second performance mode, note on / off and Pitch Bender
, Each of the commands operates independently from the fixed predetermined MIDI channel to a channel obtained by adding 5 to each MIDI channel. For example, when the predetermined MIDI channel is 1, up to 1 + 5 = 6 channels operate independently. This is a command input from a stringed instrument such as a guitar.
The MIDI channel is set independently for each string, for example,
In many cases, the sixth string is assigned to channels 1 to 6, and note on / off for each string (corresponding to picking for each string) and Pitcp Bender (corresponding to chalking technique etc. for each string) This is because an instruction is given. On the contrary,
Each command of After Touch, tone change, and control change is accepted only when a fixed predetermined MIDI channel of the lowest string channel among the six channels is designated, and corresponds to a channel +5 from the channel. The command is executed simultaneously for six strings. This is because a tone change or the like is instructed for the 6th string at the same time, so by sending a command using only the MIDI channel corresponding to the lowest string, the command is executed commonly for the 6th string, thereby It prevents redundancy, such as transferring instructions separately for each string.

When Wind Mode is selected in NORMAL MODE as the third performance mode, it is the same as when Key Board Mode is selected, but when the After touch command is input, the data of the After Tcuch command is used as the tone. Volume
Conversion curves for converting to timbre parameters (hereinafter referred to as
(Referred to as an after curve). In the case of the Guitar Mode as shown in FIG. 6, the after curve is set as in the case of the Key Board Mode. In this way, changing the setting only in Wind Mode is often used for wind instruments to control the volume etc. by aftertouch, but the aftertouch data is always small at the onset of the sound, similar to the aftertouch in Key Board Mode. This is because, if the control is performed, the rise of the sound is always delayed, resulting in an unnatural performance. In addition,
It is conceivable that the after touch of Guitar Mode is added by a dedicated touch key provided on the guitar body. The after curve or an algorithm for determining the after curve is stored in, for example, the ROM 7 of FIG. 1, and is referred to the carp based on the data of the After Touch command input by the CPU 1 and converted into parameters of the volume and tone of the musical tone. Output to the sound source 9.

In contrast to the NORMAL MODE, the fourth performance mode, COM
In BINATION MODE, as shown in Fig. 6, two tones are simultaneously generated and the normal mode is changed except that the number of Poly becomes four.
Are exactly the same as in the first to third performance modes.
However, in Key Board Mode, Key Board Mod of NORMAL MODE
Unlike in the case of e, as will be described later, the left and right waving sound generation processing related to the present invention is not performed at the time of note-on.

In the fifth performance mode, in the MULTI.POLY MODE, only the Key Board Mode can be set in this embodiment on the assumption that the MULTI.POLY MODE is used as the sound source of a sequencer (automatic performance device). Note on / off, Pitch Bender, After Touch, tone change and control change commands are
It operates independently for each MIDI channel and operates on the sounding area of the same channel as the MIDI channel set independently for the eight sounding areas.

As described above, in this embodiment, NORMAL MODE, COMBI
NONE MODE or MULTI.POLY MODE each play mode can be selected, and the externally connected electronic musical instrument, for example, whether the keyboard is an electronic guitar or an electronic wind instrument, etc., can perform optimal tone generation control for each device. This is a major feature.

Operation of Switch Change Processing Hereinafter, the general operation flowchart of FIG. 5 will be described.
The switch change processing of S503, the MIDI IN processing of S505, and the control data change processing by interruption will be sequentially described.

First, a description will be given of a switch changing process when each of the performance modes is set by the switch section 3 in FIG. 1 of FIG.

FIG. 7 is a part of the switch section 3 of FIG. 1, and is a key switch for setting each performance mode. In the same figure
18, 19 and 20 are NORMAL MODE, COMBINATION MODE respectively
And MULTI.POLY MODE switch, 21 is K
A select key for selecting ey Board Mode, Guutar Mode or Wind Mode.

FIG. 8 shows a display example of the display unit 4 in FIG. 1 when each performance mode is selected. In the case of this example, the display unit 4
It consists of an LCD module of characters x 2 lines.

FIGS. 7A to 7C are display examples when NORMAL MODE is selected and Key Board Mode, Guitar Mode, and Wind Mode are selected, and "K", "G", and "W". The underline under the character is blinking with the cursor.
Every time the select key 21 in FIG. 7 is pressed, the display changes in the order of FIG. 8 (a) → (b) → (c) → (a), and Key Board Mode → Guitar Mode → Wind Mode → Key
The performance mode changes like Board Mode.

FIGS. 8 (d) to 8 (f) are display examples when the COMBINATION MODE is selected and the Key Board Mode, Guitar Mode, and Wind Mode are selected. As in the case of the NORMAL MODE, the selection in FIG. Each performance mode can be selected with the key 21.

FIG. 8 (g) shows the display of MULTI.POLY MODE. Since the key board mode is fixed as described above, the display of "K" is omitted.

In FIGS. 8A to 8G, “PST” on the first line of the screen
The character "1" is an abbreviation of Preset Bank 1, and "A-1", "A-2", "A-3", etc. on the second line indicate the tone bank A.
1, 2, and 3, both of which indicate areas in which timbre data is stored. Also, "VZ EP", "VZ BASS",
Characters such as "VZ TRUMPET" indicate a tone color name.

Further, in FIGS. 8 (d) to 8 (f), Means that two timbres are simultaneously produced, and indicates that the timbre bank and timbre name of the vocal area enclosed by □ are displayed.
The character “11111111” on the first line in FIG. 8 (g) indicates the Poly numbers of the eight sounding areas 1 to 8 in order from the left. Note that (g) in the figure shows 1Poly. Then, it indicates that the tone bank and the tone name of the tone generation area surrounded by □ are displayed.

FIG. 9 is a view showing each switch (7th switch) of the switch section 3 shown in FIG.
It is an operation flowchart showing a program executed when each of the switches 18 to 21 in the figure is pressed. This operation flowchart is a detail of the switch change processing in S503 in the general operation flowchart of FIG.

In FIG. 9, in S901, it is determined whether the key switch whose state has changed is newly pressed or released, and if released, the process proceeds to s906 to perform a switch OFF process. However,
In each of the switches 18 to 21 in FIG. 7, since there is no switch OFF state, the process ends without performing any processing.

When a key switch whose state has changed is newly pressed,
In each discrimination process of S902 to S905, each key switch 18 (NORMAL MODE), 19 (COMBINATION MODE), 20
(MULTI.POLY MODE), it is determined whether or not 21 (select key) is pressed, and if YES, each process of S0907 to S910 is performed,
If none of the above, the corresponding switch is changed in S911. Note that the processing of S911 is not directly related to the present invention, and thus details thereof are omitted.

When the NORMAL MODE setting switch of FIG. 7 is pressed, the process proceeds from S902 to S907, and the NORMAL MODE setting process is performed. Here, all the musical tones generated by the sound source 9 in FIG. 1 are silenced, and the flag NORMFG shown in FIG. 10B, which is a dedicated RAM of NORMAL MODE (part of the RAM 8 in FIG. 1), is read out. Depending on Key Board Mode, Guitar Mode or Win
Determine one of d Mode. As shown in FIG. 10 (b), the flag NORMFG is unused for bits 0 to 4,
5, 6 and 7 are Key Board Mode, Guitar Mode and Wind M
In the case of ode, each bit is set to "1", and each mode is exclusive, so any one bit is always "1". After the above determination, information is set in the flag MODEFG of FIG. 10 (a) which is a sound control RAM (a part of the RAM 8 of FIG. 1), and then the operation of the sound mode of the NORMAL MODE already described with reference to FIG. In this case, all the storage areas (not shown) necessary for the tone control on the RAM 8 in FIG. 1 are initialized.
Here, the flag MODEFG is set to 1 as shown in FIG.
Byte RAM, bits 0, 1, and 2 are NORMAL MO
It is set to “1” when the mode is DE, COMBINATION MODE, MULTI.POLY MODE, and each mode is mutually exclusive. Therefore, “1” is always one bit out of three bits, and which one is Is "1". Therefore, in the NORMAL MODE setting process, the bit of the flag MODEFG is set.
0, 1, and 2 are set to "1", "0", and "0", respectively. Bits 3 and 4 of the flag MODEFG are not used. Also, bits 5, 6, and 7 are for Key Board Mode, Guitar Mode, and W
In the ind mode, each bit is set to "1", and since each of these modes is exclusive, any one bit is always "1".

Next, when the COMBINATION MODE setting switch in FIG. 19 is pressed, the process proceeds from S903 to S908 in FIG.
N MODE setting processing is performed. Here, the sound source 9 of FIG.
Silences all tones pronounced in
The flag COMBFG shown in FIG. 10 (c), which is a dedicated RAM (part of the picture RAM 8 in FIG. 1), is read out, and the key board mode,
Determines either Guitar Mode or Wind Mode. As shown in FIG. 10 (c), the flag COMBFG has exactly the same configuration as the flag NORMFG in FIG. 10 (b). After the above determination, as in the NORMAL MODE setting process, after setting information in the flag MODEFG of FIG. 10 (a), the first operation is performed to perform the operation of the sound mode of the COMBINATION MODE already described in FIG. Initialize all storage areas (not shown) necessary for tone generation control on the figure RAM 8.

Subsequently, when the MULTI.POLY MODE setting switch in FIG. 7 is pressed, the process proceeds from S904 to S909 in FIG.
LY MODE setting processing is performed. Here, all the musical tones generated by the sound source 9 in FIG. 1 are muted, and bits 0, 1, and 2 of the flag MODEFG in FIG. 10A are set to "0", "0", and "1", respectively.
, Bits 5, 6, and 7 are set to "1", "0", and "0", respectively. This is because the MULTI.POLY MODE is fixed to the Key Board Mode as already described with reference to FIG.

On the other hand, when the select key shown in FIG.
The process proceeds from step S905 to step S910, where K, G, and W change processing is performed. This process ends without performing any process when MULTI.POLY MODE is selected. When the NORMAL MODE is selected, first, the flag NO in FIG.
In the RMFG, when bit5 is "1", bit6 is "1", and bit7 is "1", bits 5, 6, and 7 are set to "0", "1", "0", "0" and "0", respectively. "1", "1"
After setting to “0” and “0”, the same NORM as in S907
Execute AL MODE setting processing. When COMBINATION MODE is selected, first, the flag COMB shown in FIG.
In the FG, when bit5 is "1", bit6 is "1", and bit7 is "1", bits 5, 6, and 7 are set to "0", "1", "0", "0", "0", and "0", respectively. 1 "," 1 "," 0 "
After setting to “0”, the same COMBINATION
Execute the MODE setting process.

Operation of MIDI IN Process As described above, after the switch change process is performed in S503 in FIG. 5 and the performance mode is set, the MIDI circuit 5 in FIG.
Note on / off, Pitch Bender, Aft from external devices via
The operation when the er Touch and tone change MIDI commands are input will be described below. Of particular relevance to the present invention is the processing operation when a Note on command is input when Keyboard Mode is selected in NORMAL MODE.As described later, musical sounds are distributed to the left and right stereo channels. It is characterized by performing a sounding operation while performing.

When each of the above MIDI commands is input, the operation flowchart of FIG. 3 is executed based on the interrupt from the MIDI circuit 5 and the MIDI command is received by the MIDI circuit 5 as described above.
MIDI commands are stored in RAM8. Then, this state is detected in the determination processing of S504 in FIG.
IN processing is executed. The details of this process are shown in FIG.

In the figure, in S1101 to S1104,
It is determined whether the command is n / off, Pitch Bender, After Touch, or tone change. In the case of a control change command other than the above-mentioned command, since it is processed by control data change processing based on interrupts at fixed intervals as described later, M is determined by the determination in S1113.
In the IDI IN process, the process ends without performing anything. Further, in the case of a command other than these, after discriminating in S1114 the command to be invalidated and the command valid, the command processing of the command valid is executed. The relevant command is, for example, MI
There are system messages that are not related to the MIDI channel, such as exclusive messages, common messages, and real-time messages based on the DI standard. Then, when any of the following commands is entered: Note on / off, Pitch Bender, After Touch, or tone change explain. The following description corresponds to the general operation in each of the first to fifth performance modes already described with reference to FIG. 6 in the section “Overview of pronunciation mode in this embodiment”.

First, as the first performance mode, the Key Born in NORMAL MODE
The case where d Mode is selected will be described.

First, note o in the first performance mode particularly related to the present invention.
When the n / off command is input, the determination in S1101 in FIG.
If YES, the channel judgment 1 of S1105 is executed. The details of channel determination 1 are shown in FIG. In the case of the first performance mode, the discrimination in S1201 and S1203 in FIG. 12 is NO, and the discrimination processing in S1205 is executed, whereby the MIDI channel (hereinafter simply referred to as IMIDI channel) specified in the input command is set. , Only when it is equal to a fixed predetermined MIDI channel (hereinafter, referred to as a fixed channel), the determination in S1205 is Y
It becomes ES, and proceeds to the Note on / off process of S1106 in FIG. This process is shown in FIG. In the case of the first performance mode, S1401, S
The determination in 1402 is NO, and the process proceeds to S1403. If the command is a Note on command, the process proceeds to S1414, and furthermore, S141
The determination at 4 is YES, the determination at S1415 that follows is also YES, and S1416
The process proceeds to the left-right distribution sound processing.

Here, in the present embodiment, the sound source 9 of FIG. 1 can generate eight sounds polyphonically in parallel by time-division processing.
It has eight modules as shown in FIG. That is, each module means each time-division timing corresponding to the eight sounds. Further, the outputs of the modules 1 to 4 are accumulated into one and output as a stereo right channel tone (R in the figure), and the outputs of the modules 5 to 8 are also accumulated and output as a stereo left channel. It is output as a musical sound (L in the figure). In the present embodiment, a major feature is that the sound is generated while the left and right channels are alternately switched for each sound generation in S1416. FIG. 18 shows the details of the left-right distribution sound generation process in FIG. 14 S1416.

First, in S1801, it is determined whether the previously generated musical tone is a right channel or a left channel. Now, a right and left flag RTLF as shown in FIG. 20 is stored in the RAM 8 of FIG. If the musical tone generated by the previous Note on command is generated on the right channel, "0" is stored in bit0 as described later, and if it is generated on the left channel, "1" is stored. Therefore, in step S1801, it is determined whether the tone generated last time is the right channel or the left channel based on the content of bit 0 of the left and right flags RTLF.

As a result of the above discrimination, if the previous time was the right channel, the process of sounding the left channel is basically performed in the processes of S1802 to S1807, and if the previous time was the left and right channels, the process of S1808 to S8183 is performed. Basically performs a process of sounding the right channel.

If the previous time was the right channel, first of all, in S1802, the sound is emitted from the modules 5 to 8 corresponding to the left channel in the sound source of FIG. 19 (corresponding to the sound source 9 of FIG. 1, and the same hereinafter). If there is a module, the module number (5 to 8) is written into an accumulator (not shown) in the CPU 1 in FIG. 1; otherwise, the accumulator is set to 0.

In the following S1803, according to the contents of the accumulator,
It is determined whether or not distribution to the left channel is possible, and if possible, in S1804, a sound generation instruction is issued to the sound source module corresponding to the contents of the accumulator, and "1" is written to bit0 of the left and right flag RTLF in FIG. .

As a result of the determination in S1803, if it is impossible to assign to the left channel, that is, if the accumulator content is 0,
Assign to the right channel. That is, in S1805, if there is a module that is not sounded among the modules 1 to 4 corresponding to the right channel in the sound source in FIG.
The module numbers (1 to 4) are written in the accumulator, and if not, the accumulator is set to 0.

Then, in S1806, according to the contents of the accumulator,
It is determined whether or not distribution to the right channel is possible, and if possible, in S1804, a sound generation instruction is issued to the sound source module corresponding to the contents of the accumulator, and "0" is written to bit0 of the left and right flag RTLF in FIG. .

If the assignment to the right channel is not possible due to the determination in S1806, that is, if the content of the accumulator is 0, S1806
Proceeding to 807, the sounding instruction is given to the module that has sounded first among the modules 5 to 8 corresponding to the left channel in the sound source in FIG. 19, and the left and right flags RTLF in FIG.
Write "1" to bit0.

As described above, first, when the distribution to the left channel is impossible, the distribution to the right channel is performed, and when the distribution to the right channel is also impossible, the sound control of the left arrival priority is performed on the left channel. Note that sound control may be performed on a first-come, first-served basis, and in that case, the process of S1807 may be omitted.

In contrast to the above operation, if the previous time was the left channel, processing to sound the right channel in S1808 to S1813 is performed, but these are exactly the same as those in S1802 to S1807, except that the left and right are reversed. This is the process.

Through the above processing, each time a Note On command is input, a tone is generated alternately in the left and right channels in principle.

Next, returning to the Note on / off processing 1403 in FIG. 14, if the input command is a Note off command, the process proceeds to s1405, and the note number currently being produced by the sound source 9 (hereinafter referred to as Note No.) Mute) sounds that are equal.

Next, when the Pitch Bender command is input in the first performance mode, the determination in S1101 in FIG. 11 becomes NO, then the determination in S1102 becomes YES, and the channel determination 1 in S1107 is executed. This is the same as the Note on / off command above.
2 After the determinations in S1201 and S1203 in FIG. 2 are NO, the determination in S1205 is YES only when the MIDI channel and the fixed channel are equal, and the process proceeds to the Pitch Bender process in S1108 in FIG. This process is shown in FIG. In the case of the first performance mode, S1501, S1502
Is NO, and the process proceeds to S1503. Here, pitch bender data is simultaneously reflected on all eight sounds that can be produced.

When the After Touch command is input in the first performance mode, after the determination of S1101 and S1102 in FIG.
The determination at 3 is YES, and the channel determination 2 at S1109 is executed. This process is shown in FIG. That is, only when the MIDI channel is equal to the fixed channel, the determination in S1301 is YES, and the process proceeds to the After Touch process in S1110 in FIG. This process is shown in FIG. In the case of the first performance mode, S160 and S160
The determination at 2 is NO, and the flow proceeds to S1603. Here, aftertouch processing suitable for a keyboard instrument is performed. Specifically, the input aftertouch data is converted into musical tone volume / tone parameters based on a conversion curve suitable for a keyboard instrument stored in the ROM 7 of FIG.
To transfer the parameters to change the characteristics of the sound source.

When a tone change command is input in the first performance mode, after the determination of S1101 to S1103 in FIG.
Is YES, and the channel judgment 2 of S1111 is executed. That is, similar to the case of the above-mentioned After Touch command, only when the MIDI channel and the fixed channel are equal, the 13th
The determination in FIG. S1301 is YES, and the flow proceeds to the timbre change process in FIG. 11 S1112. This process is shown in FIG. In the case of the first performance mode, the determination in S1701 is NO, and the process proceeds to S1702, in which all sounds being sounded are muted. Subsequently, in S1703, a RAM area for sound generation control in the RAM 8 of FIG. 1 is initialized.
The tone data input to the tone string in 04 is transferred, and the tone to be emitted by the sound source 9 is switched.

Next, as the second performance mode, Glitar in NORMAL MODE
The case where Mode is selected will be described.

When the Note on / off command is input in the second performance mode, the determination in S1101 in FIG. 11 becomes YES, and the channel determination 1 is performed in S1105. That is, the determination in S1201 in FIG.
After becoming O, the determination in S1203 becomes YES, and the determination distance in S1204 is executed, so that only when the MIDI channel is within the range of six channels from the fixed channel to the fixed channel + 5 channels, S1204 is determined. Is YES, and the process proceeds to S1106 in FIG. 11, that is, the note on / off process in FIG. In the case of the second performance mode, after the determination in S1401 is NO, the determination in S1402 is YES, and the process proceeds to S1409. And
If the command is a note-on command, the process advances to step S1411. First, if there is a sounding module to which a channel equal to the MIDI channel of the sound source 9 in FIG. 1 is assigned, it is muted. Note that the determination of the channel is made in S141 described later.
This is performed in step 3 based on the channel data stored in the RAM 8 of FIG. Next, in step S1412, an instruction to start sound generation is issued to the empty module of the sound source 9. Further, in step S1413, the RAM 18 and the module that started sound generation are stored in the RAM 18. As described above, the reason why the sound of the same channel is muted and the sound is newly started is that the MIDI channel of the command input from the string instrument such as the guitar is set independently for each string, so that the same string is used. This is because a plurality of sounds cannot be simultaneously generated. In order to leave a lingering sound, silencing may be performed by adding an appropriate envelope.

On the other hand, if the command is a Note off command, S1401
To mute the sound currently being produced by the sound source 9 and having the same MIDI channel.

When a Pitch Bender command is input in the second performance mode, the determination in S1101 in FIG. 11 becomes NO, then the determination in S1102 becomes YES, and channel determination 1 in S1107 is executed. As in the case of the Note on / off command, FIG.
After the determination of 1201 is NO, the determination of S1203 is YES,
Only when the MIDI channel is within the range of 6 channels from the fixed channel to the fixed channel + 5 channels, the determination in S1204 becomes YES, and S1108 in FIG.
Proceed to Pitch Bender processing in FIG. In the case of the second performance mode, after the determination in S1501 is NO, the determination in S1502 is YES, and the process proceeds to S1504. Here, the pitch bender data is reflected only on the sound whose MIDI channel is equal to the previously sounded channel (the sounding channel). That is, pitch bend is applied independently only to a sound corresponding to, for example, a chorded string.

When the After Touch command is input in the second performance mode, after the determination of S1101 and S1102 in FIG.
3 is YES, the channel judgment 2 of S1109, that is, FIG. 13 is executed, and in the first performance mode, the After Touch
Just as in the case where the command is input, the determination in S1301 is YES only when the MIDI channel and the fixed channel are equal, and the After Touch process in S1110 in FIG. 11, that is, Af in FIG.
Proceed to ter Touch processing. In other words, in the case of the second performance mode, unlike the Note on / off command or the Pitch Bender command for the After Touch command, only when the predetermined MIDI channel with the lowest string channel fixed among the six channels is designated. It operates to receive the command. The Afer Touch process in FIG. 16 proceeds from S1602 to S1602 to S1603 as in the case of the first performance mode, and aftertouch processing suitable for a keyboard instrument is performed. In this case, the channel corresponding to +5 from the fixed channel is supported. The above commands are executed simultaneously for the channels of six strings. Thus, by transmitting the After Touch command for one string, an after touch effect can be simultaneously applied to six strings.

When a tone change command is input in the second performance mode, after the determination of S1101 to S1103 in FIG.
Is YES, the channel judgment 2 of S1111, that is, the
FIG. 13 is executed, and as in the case of the After Touch command, only when the MIDI channel and the fixed channel, that is, the lowest string channel are equal, the determination in S1301 in FIG. 13 is YES and the command is accepted, and the timbre in S1112 in FIG. The process proceeds to the change process, that is, FIG. Here, as in the case of the first performance mode, the process proceeds from ST1701 to S1702 to mute all sounds being generated, and in S1703 the RAM area for sound control in the RAM 8 in FIG. 1 is initialized. Is transferred to the tone generator 9 to switch the tone to be generated. Also in this case, the above command is executed simultaneously for the six strings corresponding to the channel +5 from the fixed channel.
By transferring the h command, the timbre can be changed simultaneously for the 6th string.

Next, as the third performance mode, set the NORMAL MODE to Wind
The case where Mode is selected will be described.

When the Note on / off command is input in the third performance mode, the determination in S1101 in FIG. 11 becomes YES as in the case where the first performance mode, that is, the Key Board Mode is selected.
Channel determination 1 of S1105 is executed, and S1201, S1 in FIG.
The determination of 203 is NO, and the determination of S1205 is YES only when the MIDI channel is equal to the fixed channel.
The process advances to S1106, that is, the Note on / OFF process in FIG. In FIG. 14, in the case of the third performance mode, the determination of S1401 and S1402 is NO.
And proceed to S1403. If the command is a Note on command, the process proceeds to S1414, but since this determination is NO, S
Proceed to 1404. In this case, the sound source 9 shown in FIG. Note that, in this case, unlike the case of the Key Board Mode, the assignment to the left and right channels is not performed.

On the other hand, if the command is a Note off command, S1403
Proceeding to S1405, the sound being generated by the sound source 9 and having the same note number (hereinafter referred to as Note No.) is muted.

Next, the operation when the commands of Pitch Bender and tone change are input in the third performance mode is exactly the same as that in the first performance mode.

When the After Touch command is input in the third performance mode, as in the first performance mode, S1103 → 1109 → S11 in FIG.
Proceeds to 10, but after the determination of S11 is NO in FIG. 16, S1602
Is YES. Accordingly, the process proceeds to S1604, where after-touch processing unique to wind instruments is performed. Specifically, the input aftertouch data is converted into tone volume and tone parameters based on a conversion curve or a conversion algorithm suitable for wind instruments stored in the ROM 7 of FIG. To change the characteristics of the sound source. This makes it possible to naturally cope with an operation in which after-touch data always decreases when a sound rises, in a control mode peculiar to a wind instrument in which volume and the like are controlled by after-touch.

In contrast to the NORMAL MODE, the fourth performance mode, COM
In the BINATION MODE, except that two tones are generated simultaneously and the number of Poly in each tone becomes four, in the operation flowcharts of FIGS.
The same processing as in the case of each performance mode is performed. However,
When the Note on / off command is input in the Key Board Mode, after the determination in S1414 in FIG. 14 is YES, the determination in S1415 is NO, so the left and right split sound processing is not performed,
In S1404, normal sound generation processing is performed. Also, COMBINATION MOD
If the Note on / off command is input in Guitar Mode of E, the tone data that is the oldest sounded by the later input note-on will be muted because each tone will operate with 4 notes Poly for 6 strings. The sound control is performed while the sound is being generated.

Finally, the operation in the case where MULTI.POLY MODE is selected as the fifth performance mode will be described. in this case,
Except that each process is performed only on the sound in the sounding area to which the channel equal to the MIDI channel is assigned.
The operation is exactly the same as in the first performance mode. In this case, the sounding area is, for example, the first sounding area has a channel number of 1 and two sounds Poly, the second sounding area has a channel number of 2 and four sounds Poly, and the third sounding area has a channel number of 3 and three sounds Poly. Such an area is assigned to behave as an independent instrument corresponding to each MIDI channel.

When the Note on / off command is input in the fifth performance mode, the process proceeds from S1101 to S1105 in FIG. 11, and the determination in S1201 in FIG.
ES, and the discrimination process of S1202 is executed, whereby M
Only when the Poly number of the sounding area to which the IDI channel is assigned is not 0, the determination becomes YES, and FIG.
Note on / off processing, ie, proceed to FIG. Where S
The determination in 1401 is YES, and only the sounding area to which the MIDI channel is assigned is set to the first performance mode.
The processing of S1406 to S1408 corresponding to the processing of S1403 to S1405 is executed.

When the Pitch Bender command is input in the fifth performance mode, the process proceeds from S1101 to S1102 to S1107 in FIG.
Channel determination 1 exactly the same as in the case of the ff command is executed, and the process proceeds to Pitch Bender processing in FIG. Here, the determination in S1501 is YES, and the processing in S1505 corresponding to the processing in S1503 in the first performance mode is executed only for the sounding area to which the MIDI channel is assigned.

When the After Touch command is input in the fifth performance mode, the process proceeds to S1101 → S1102 → S1103 → S1109 in FIG. 11, and the channel judgment 2 in FIG. 13 is executed exactly in the same manner as in the first performance mode. In other words, even when the MIDI channel is equal to one of the fixed channels in each sounding area, S1301
Is YES, and the flow proceeds to the After Touch process in FIG. 11 S1110, that is, FIG. Here, the determination in S1601 is YES, and the processing in S1605 corresponding to the processing in S1603 in the first performance mode is executed only for the sounding area to which the MIDI channel is assigned.

When the timbre change command is input in the fifth performance mode, the process proceeds to S1101 → S1102 → S1103 → S1104 → S1111 in FIG. 11, and the same channel determination 2 as in the case of the After Touch command is executed. The process proceeds to FIG. Here, the determination in S1701 is YES
As a result, the processes of S1705 to S1707 corresponding to the processes of S1702 to S1704 in the first performance mode are executed only for the sounding area to which the MIDI channel is assigned.

As described above, NORMAL MODE, COMBINATION MODE
Or, when each performance mode of MULTI.POLY MODE is selected, and furthermore, by selecting Key Board, Guitar Mode or Wind Mode, an externally connected electronic musical instrument is, for example, a keyboard, an electronic guitar, an electronic wind instrument, or the like. In addition, it is possible to perform tone control of a musical tone optimal for each device. Particularly, in the present embodiment, in the case of the NORMAL MODE and the Key Board Mode, a great feature is that a tone generation process is performed in which a tone is distributed to the left and right channels of the stereo for each tone generation operation.

Operation of Control Data Change Processing Lastly, an operation when a control change command is input from an external device via the MIDI channel circuit 5 of FIG. 1 will be described with reference to an operation flowchart of FIG.

The operation flowchart of FIG. 21 is executed by the CPU 1 prior to the general operation flowchart of FIG. 5 based on an interrupt from a timer (not shown) at regular intervals, similarly to the switch state fetch operation of FIG. Is done.
Therefore, when the control change command is input, the processing is performed in the unit of the fixed cycle.

First, when a controller change command is input, the operation flowchart of FIG. 3 is executed based on the interrupt from the MIDI circuit 5 as described above, and the MIDI
The MIDI command received by the circuit 5 is stored in the RAM 8. Then, this state is detected in the determination processing of S2101 and S2102 in FIG. If no MIDI command has been input or the input MIDI command is not a control change command, the determination in S2101 and / or S2192 is NO, and the process proceeds to S2105. This will be described later.

When a control change command is detected, first, if the MIDI channel (the MIDI channel specified in the input dynamic command) is equal to the fixed channel, the
The determination at 93 is YES, and the flow proceeds to control data change processing at S2104. Here, the control corresponding to the control change data input based on the operation of the external device such as a modulation wheel, a foot volume, a master volume, a foot switch, a portamento time change switch, a portamento ON / OFF switch, etc. This is performed for the sound source 9 in the figure. As described in the section on MIDI IN processing, Guitar Mode (NORMAL MODE or CO
In the MBINATION MODE, the above command is accepted only when the MID channel is equal to the fixed channel corresponding to the lowest string, and the actual control is performed simultaneously from the fixed channel to the channel corresponding to the sixth string from the channel +5. In the MULTI.POLY MODE, control is performed only on the sounding area corresponding to one of the fixed channels corresponding to each sounding area.

In addition to the control change command input as a KIDI command as described above, in S2105, the controller 17 of FIG. 1 is operated to determine whether or not the state has changed from the previous determination. This processing is executed when the present embodiment is implemented as a part of the keyboard instrument and the controller 17 is provided, as described in the section “Configuration of the present embodiment”. In step S2105, a change in the state of the controller is determined in order to reflect the change in the sound generation control.

If the controller operation is performed, S2
At 106, the corresponding control data is changed. This process is the same as the process of S2104. When the present embodiment is realized as a tone generator module type electronic musical instrument having no controller 17, S2105
And 2106 need not be executed.

In the next step S2107, data calculation for realizing the LFO vibrato is performed. The LFO vibrato is an effect in which the pitch of a musical tone is periodically fluctuated at a low frequency by the output of an LFO (low frequency oscillator). The CPU 1 shown in FIG. It is realized by transferring. Here, based on the MIDI command or the operation of the controller 17 shown in FIG. 1, a data calculation process is also performed when the LFO vibrato is modulated by the control data calculated in S2104 or S2106.

In S2108, an instruction is issued to the sound source 9 shown in FIG. 1 to actually change the pitch of the musical tone based on the LFO vibrato data calculated in the above processing.

In S2109, data calculation for realizing LFO tremolo (growl) is performed. This is an effect of periodically varying the volume and tone of the musical tone at a low frequency by the output of the LFO. The CPU 1 of FIG. 1 creates corresponding volume or tone change data and transfers it to the sound source 9. Realize.
Here, the MID command or the controller 1 in FIG.
On the basis of the operation of 7, the data calculation processing when the LFO tremolo (growl) is modulated by the control data calculated in 2104 or S2106 is also performed.

In S2110, an instruction to actually change the volume and tone of the musical tone is issued to the sound source 9 in FIG. 1 based on the LFO tremolo (growl) data calculated in the above processing.

Then, in S2111, data computation processing for generating a panning effect is performed. As described above, the panning effect means that the panning effect generator 11 constantly or randomly changes the localization of the left and right channels added to the stereo anatog tone signal from the D / A converter 10 as described above. The effect is

Then, in the process of S2201 of the operation flowchart of FIG. 22, which is executed by a timer interrupt at a fixed period different from the operation flowchart of FIG. 21, the actual panning effect is performed by the CPU 1 of FIG. It is generated and added by outputting a control signal to the panning effect generator 9.

Other Embodiments In the above embodiment, in the case of the NORMAL MODE and the Key Board Mode, the distribution of musical tones is controlled so that the left and right are alternately distributed for each sound.However, the present invention is not limited to the left and right localization. Each time, the control may be performed in such a manner that there is left → center → right → center → jitsuri, and furthermore, the mixing degree to the left and right may be controlled to change continuously. In this case, panning control is performed by the panning effect generator 11.

On the other hand, the distribution of musical tones to the left and right channels was performed by dividing the eight modules of the sound source 9 of FIG. 1 into four for each of the left and right as shown in FIG. At the stage of sounding the module, only the left and right flags may be set for each module, and at the last stage of accumulation, the left and right channels may be allocated based on the flag.

In the above embodiment, the change of the performance mode is the first mode.
Although the operation is performed by the respective switches shown in FIG. 7 in the switch unit 3 shown in FIG. 7, the change may be made by a MIDI command from an external device.

In addition, the maximum number of simultaneous sounds that can be generated from the sound source 9 in FIG. 1 is eight, but the number is not limited to eight and may be increased to 16, 24, 32, or the like. In addition, the number of strings that can be supported in the Guitar Mode is six, but may be more.

In addition, in the COMBINATION MODE, it is possible to provide more than two sounding areas so that the number of musical tones of different timbres that are simultaneously sounded by one note-on can be three or more. It may be switched to 2, 4, 8, etc. In that case, the Poly number of simultaneous sounds changes.

Further, in the MULTI.POLY MODE, only the Key Board Mode is fixedly set, but the Guitar Mode or the Wind Mode may be set.

〔The invention's effect〕

According to the present invention, each time note-on information is input based on a performance operation, the sound image position of a musical tone generated by the sound source means can be varied. As a result, the player can sequentially change the sound image position of a musical tone generated by playing a single note, for example. Also, by playing a chord, for example, a musical tone with a widened sound image can be produced. As described above, according to the present invention, it is possible to obtain an effect based on the intention of the player.

In this case, when the polyphonic number of musical tones at a certain sound image position becomes full, appropriate control can be performed by allocating to another sound image position,
The sound source can be used efficiently.

Furthermore, when the polyphonic number of musical tones at all sound image positions becomes full, it is possible to obtain an appropriate stereo effect while efficiently using a sound source by generating musical tones with priority for later arrival. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an electronic musical instrument according to the present invention, FIG. 2 is an operation flowchart for capturing switch states, FIG. 3 is an operation flowchart for MIDI input, FIG. 4 is an operation flowchart for MIDI output, FIG. 5 is a general operation flowchart, FIG. 6 is a tone generation mode table, FIG. 7 is a configuration diagram of a tone generation mode setting key switch, and FIGS. 8 (a) to (g) show display examples of each mode. FIG. 9, FIG. 9 is an operation flowchart of a switch change process, FIGS. 10A to 10C are configuration diagrams of a sound generation mode memory, FIG. 11 is an operation flowchart of a MIDI IN process, FIG. Is an operation flowchart of channel judgment 1, FIG. 13 is an operation flowchart of channel judgment 2, FIG. 14 is an operation flowchart of note on / off processing, FIG. 15 is an operation flowchart of pitch bender processing, FIG. Is 17, an operation flowchart of an after touch process, FIG. 17 is an operation flowchart of a tone switching process, FIG. 18 is an operation flowchart of a left and right distribution sound generation process, FIG. 19 is a configuration diagram of a sound source, and FIG. FIG. 21 is an operation flowchart of a control data change process, and FIG. 22 is an operation flowchart of a PAN control process. 1 ... Central control unit (CPU), 2 ... Bus, 5 ... MIDI circuit, 7 ... ROM, 8 ... RAM, 9 ... Sound source,

Claims (2)

(57) [Claims] 1. A sound source means for independently generating a tone signal with a predetermined polyphonic number at each of a plurality of sound image positions, and the note-on information is changed in the sound source means every time note-on information is inputted. If a musical tone based on the note-on information is generated at a sound image position other than the predetermined sound image position at a sound image position at which the musical sound is to be generated and the predetermined polyphonic number has already been generated, the sound image based on the note-on information is generated. An electronic musical instrument comprising: a position control unit. 2. When the sound image position control means determines a predetermined sound image position each time the note-on information is input, the sound of the predetermined polyphonic number is generated at all of the plurality of sound image positions in the sound source means. In the case of being pronounced, the sound image position control means silences the oldest sound-started sound among the sounds sounded at the predetermined sound image position in the sound source means and sounds a sound based on the note-on information. The electronic musical instrument according to claim 1, wherein: