JPH02127692A - Sound source device - Google Patents

Abstract

PURPOSE:To increase the polyphonic number of a musical sound to be generated according to the number of sound source modules which are connected by connecting the sound modules. CONSTITUTION:A sound source circuit 6 is a circuit which generates eight sounds at the same time and when sound source modulates are connected, all the sound source modules have a 1st polyphonic area in common and also have 2nd polyphonic areas specified individually, for example, without overlapping one another. When the respective sound source modules are put in simultaneously operation after the specification, updating operation on note information storage means of the respective sound source modules are carried out completely concurrently according to the same rule and the respective sound source modules are put in partial charge of only polyphonic channels in the 2nd polyphonic areas to control the generation of musical sounds. In this case, polyphonic area specifying means of the respective sound modules set the 2nd polyphonic areas optionally with upper-limit and lower-limit values and polyphonic numbers are set differently, module by module, freely without overlapping with one another.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sound source device of a sound source module type that generates musical tones by inputting note information (musical sound data) from the outside, and more specifically relates to a sound source device of a sound source module type that generates musical tones by inputting note information (musical sound data) from the outside. The present invention relates to a sound source device that can be operated in conjunction with each other as a single sound source instrument when connected.

(Conventional technology) MIDI (Musical In5t, rament
With the advent of the digital interface system and the development of electronic musical instruments using digital signal processing, it has become possible to connect a plurality of electronic musical instruments to each other via MIDI and perform performance operations in synchronization. In particular, for the purpose of such synchronized performance, many sound source module type electronic musical instruments without a performance section such as a keyboard have been developed, and by connecting multiple such sound source modules, advanced performance effects can be obtained. It is now possible.

In the above-mentioned sound source module, a keyboard or the like is connected externally, and N0TE ON data (note-on data; pronunciation instruction data) or N0TE OF is input from there.
M such as F data (note-off data; mute instruction data)
By receiving the IDI data, sound production control such as production or muting of musical tones is performed. In this case, a single sound source module is usually capable of generating a plurality of musical tones in parallel through time-sharing processing, and a sound source module having a polyphonic number of about 8 to 16 sounds is common. When multiple such sound source modules are connected and used by MIDI, each sound source module is connected to each MIDI
By receiving data independently, it is possible to synchronize and perform multiple sound source modules. In this case, each of the 8- to 16-note polyphonic sound source modules performs sound generation operations in parallel and independently.

[Problem to be solved by the invention]

However, in the conventional example mentioned above, multiple sound source modules are only operated in parallel, and it is not possible to expand and connect the sound source modules and use multiple sound source modules as one sound source module. There is a problem with this.

To solve these problems, specify the range of sounds to be produced for each sound source module, and input N0TENo from the outside.
There is a conventional example in which the extensibility of the sound source is achieved by determining whether or not to produce a sound based on the note number (scale), but with this type, the sound source module that produces the sound is determined by the range of notes being played, When performing a performance that requires a lot of use, the number of polyphonic sounds per tone generator module is exceeded, making it impossible to produce any more sounds, and the problem is that the performance can only be performed with a narrow degree of freedom. There is.

Also, even numbered N0TE No, and odd numbered N0TE
There is a conventional example in which sounds are produced using separate sound sources for TENo and N.
If 0TE No. is specified, the same problem as in the case of specifying the range will occur.

An object of the present invention is to make it possible to expand the polyphonic number of musical tones produced by connecting multiple sound source modules in accordance with the number of connected sound source modules, and in particular to enable independent polyphonic number settings for each sound source module. The purpose of this is to make it possible to expand the polyphonic number in detail by taking advantage of the characteristics of each sound source module.

[Means for Solving the Problems] The present invention is based on a sound source device capable of receiving note information from the outside and controlling the production of musical tones based on the note information. In this case, each sound source device is connected to each other by, for example, MIDI, and one of the sound source devices has a performance section such as a keyboard, and the sound source devices are connected to each other by, for example, a MIDI, and one of them has a performance section such as a keyboard. The configuration can be configured to control the sound source and the externally connected sound source module.

In the above sound source module, first, the polyphonic area specifying means is a means for specifying a second polyphonic area within a first polyphonic area consisting of a plurality of polyphonic channels by its upper and lower limit values. Here, the term "polyphonic channel" refers to a plurality of sounding channels that allow simultaneous sounding of a plurality of scales when producing musical tones. For example, if the polyphonic number (number of simultaneous sounds) is allowed to reach 64,
The first polyphonic region includes channels from the first channel to the sixth channel.
This refers to up to 4 channels. The second polyphonic region refers to, for example, from the 9th channel to the 16th channel in the channel range described above. In this example, the polyphonic area specifying means sets the lower limit "
This is a display device such as a cursor switch, ■, CD, etc., for specifying the second polyphonic area of the 9th to 16th channels by specifying ``9'' and the upper limit value ``16''.

Next, the note information storage means is means for storing note information for each polyphonic channel in the first polyphonic area. The means includes, for example, each address corresponding to the first channel to the 64th channel.
This is a memory that can store note numbers, codes indicating that the sound is muted, and other information.

Subsequently, the polyphonic channel control means is means for updating the note information of the polyphonic channel in the first polyphonic area on the note information storage means according to a predetermined rule when note information is received. For example, when note-on (pronunciation instruction) data is received, the means selects a currently vacant channel or a muted channel among the addresses corresponding to the first channel to the 64th channel on the note information storage means. Then, control is performed to save the note numbers to be turned on in order from the youngest address. In addition, when note-off (mute instruction) data is received, control is performed to change the note number stored in each of the above addresses that matches the note number to which note-off should be performed to a code indicating that the sound is muted. . Alternatively, the stored content may be controlled in the same manner as described above in accordance with note information that instructs changes in pitch (bend instructions) or changes in various effects.

Further, the musical tone control means is means for controlling the sound production of musical tones based on the note information stored in each polyphonic channel in the second polyphonic area on the note information storage means. The means is configured to make a note to any one of the addresses corresponding to, for example, the 1st to 64th channels on the note information storage means, for example, the addresses of the 9th to 16th channels designated for the own sound source module. If a note number is memorized, the sound will start at that note number, and if a code indicating muting is memorized, the currently sounding musical tone corresponding to the note number stored there will be muted. .

In the above configuration, the musical tone control means has a mode in which musical tone generation IIr is controlled based on note information stored in each polyphonic channel in the second polyphonic area on the note information storage means, and a mode in which musical tone generation IIr is controlled based on note information stored in each polyphonic channel in the second polyphonic area on the note information storage means, Control may be possible by switching between a mode in which musical tones are unconditionally controlled based on the information.

Further, the note information inputted from the outside is MIDI.
(Musical Instrument Digi
The polyphonic area specifying means, the note information storage means, the polyphonic channel control means, and the tone control means may each operate independently for each MIDI channel.

[For production]

The effects of the present invention are as follows.

First, when a plurality of sound source modules as described above are connected, the first polyphonic area is common to all the sound source modules. Then, for each sound source module, the second polyphonic areas are specified so as not to overlap with each other, for example. That is, the first to eighth channels are specified for the first sound source module, the ninth to 16th channels are specified for the second sound source module, and so on.

After the above designation, when the sound source modules are operated simultaneously, the updating operations on the note information storage means in each sound source module are performed completely in unison according to the same rule. Then, each sound source module receives its designated second sound source module.
Only the polyphonic channels within the polyphonic area of the musical tones are controlled.

Therefore, the connected sound source modules as a whole operate as if a single sound source module were producing musical tones.

In this case, the polyphonic area specifying means of each sound source module can arbitrarily set the second polyphonic area according to the upper limit value and the lower limit value, and can also set the polyphonic number to be different for each sound source module. , they are also free to overlap each other. This makes it possible to perform detailed expansions that take advantage of the characteristics of each sound source module.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

(The bottom of the book) FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

This embodiment is realized as a sound source module type electronic musical instrument that produces musical tones by inputting external MIDI data, and is not equipped with a performance section such as a keyboard. It is connected to the outside via the N0TE as MIDI data etc.
As long as ON data and N0TE OFF data can be input, it may be realized as a normal electronic musical instrument having a keyboard section or the like.

In FIG. 1, an external input interface circuit 1 is an interface circuit that receives MIDI data, which is a serial digital signal.

The CPU 4 follows the program stored in the ROM 2 and uses the RAM 3 as a data memory.
Each operation flowchart described later is executed. As a result, MIDI data is received from the external input interface circuit 1, and the on/off state of each switch of the console switch 8 is input via the console section interface Do path 5, and the display device 9 is controlled, and each of these processes is performed. Based on this, a control process for controlling musical tone generation is performed. Note that the display device 9 is configured by an LCD.

The tone generator circuit 6 is a musical tone generation circuit that can simultaneously generate eight tones, and based on control processing related to pronunciation, such as start and end of tone generation, tone settings, and vibrato, from the CPU 4, the tone generator circuit 6 performs 8-time division processing corresponding to eight tones. Performs musical tone pronunciation processing and outputs a digital musical tone signal.

The D/A section 7 is a circuit that performs D/A conversion on the digital musical tone signal output from the sound source circuit 6, and then filters it with a low-pass filter to output an analog musical tone signal.

This analog musical tone signal is output from the main body of the sound source module to the outside, and is emitted via an external amplifier, speaker, headphones, or the like.

(Honji 1 - 111 boxes 1) In this example, a sound source module type electronic musical instrument configured as shown in FIG. (
Musical Instrument Digital
A plurality of sound source modules can be connected to each other via a 1-interface, and the plurality of sound source modules can be used as a single musical instrument. In other words, normally, the number of polyphonic notes that can be produced simultaneously with one sound source module is about 8, and conventionally, even if multiple of these modules were connected, the 8-note polyphonic musical tone would be produced as many times as the number of polyphonic notes, or When musical tones are concentrated in a certain range, some tones are not produced, but in this example, if two 8-note polyphonic sound source modules are connected, they can be used as one 16-note polyphonic instrument, and up to 8 such connections can be made. Therefore, it is possible to realize up to 64-note polyphony.

Therefore, each sound source module in the configuration shown in Figure 1 has a maximum of 8
It is possible to define polynumbers within the range of sound polyphonics. The performer assigns, for example, poly numbers Nα1 to No. 8 to the first sound source module, and assigns poly numbers, for example Nα9 to Nα, to the second sound source module.
16 poly numbers can be assigned. Then, in this setting example, the performer starts playing on an external keyboard, etc., and based on the key press operation, < N0TE ON data (sound generation start data) is transmitted via MIDI to the first and second sound source modules. If you input the numbers sequentially, the numbers specified by each N0TE ON data from the 1st note to the 8th note will be input.
TE numbers (scale numbers, hereinafter referred to as N0TE No.) are sequentially assigned to the poly numbers Nα1 to N018 of the first sound source module in ascending order of numbers, and are produced by the first sound source module. Furthermore, each N0TE after the 9th note
When ON data is input, the N of the second sound source module
They are sequentially assigned to poly numbers starting from α9 and are produced by the second sound source module. During this process, any key currently being pressed is released and the corresponding N0TEO
When FF data (mute instruction data) is input, the musical tone of the poly number to which the N0TE No. specified by the data is assigned is muted. After that, a new N
When 0TE ON data is input, it is assigned to the lowest polynumber among the currently vacant polynumbers, and the tone generator module that includes that polynumber produces sound.

All the connected sound source modules perform the above operations in synchronization with each other, and by connecting the desired number of sound source modules, the performer can produce musical tones with a desired polyphonic number.

Therefore, the RAM of each sound source module with the configuration shown in FIG.
N0TE 5 holds the state related to the poly number assigned to itself as well as the state related to the poly number assigned to all other sound source modules.
I have a table called AVE MEMORY, N0TE
Every time ON and N0TE OFF data is input, all the sound source modules update the contents of the table in complete synchronization according to a certain rule. This is a major feature of this embodiment.

In the following description, the operation of each sound source module having the configuration shown in FIG. 1 for realizing the above operation will be explained in detail. In this embodiment, each sound source module can be switched between a mode in which the polyphonic synchronous operation is performed and a mode in which it operates independently from other sound source modules as in the past.
BLE mode, and the latter will be referred to as polysynchronous operation DISABLE mode.

(Created by Liu Chiu, January 1st) The operation of the embodiment with the above configuration will be described below. First, the second
The figure is a main operation flowchart of this embodiment.

First, when the power switch (not shown) is turned on,
Initialization processing is performed in Sl. Here, the contents of the RAM 3 shown in FIG. 1 are initialized, the tone generator circuit 6 is reset, tone color settings, etc. are performed.

Then, switch change processing of S2 and old DI of S3
Control for musical tone generation is performed by repeating the IN process (both of which will be described later).

Apart from this, an interrupt occurs at regular time intervals, and in S4 the control process for the sound source circuit 6 in FIG. 1 is executed. Although this process is not directly related to the present invention, it is a process that adds a vibrato effect to the musical tone signal generated by the tone generator circuit 6. This effect is an effect that causes the pitch of the musical tone to fluctuate at regular time intervals, so it is controlled by interrupt processing at regular time intervals as described above.

FIG. 3 shows the external configuration of the console switch 8 and display device 9 shown in FIG. 1. In the same figure, [4CD9 is the display device 9 of FIG. 1. The other parts correspond to the console switch 8 in FIG.

Here, the mode setting switch (MODE) 10 is
Set the mode of the parameters displayed by the LCD 9 (this will be described later), and select one of the multiple data displayed on the LCD 9 using cursor switch 11.12. Data is changed using the UP switch 14 and the DOWN switch 13. Furthermore, switches 15 to 15 are numbered #1 to #8.
22, the tone to be produced is selected.

Next, FIG. 4 shows the details of the switch change process in S1 in FIG. 2, and this process is repeatedly executed as shown in FIG. It constantly monitors and processes the mode corresponding to the switched switch.

First, in S5, it is determined whether the mode is poly count setting mode.

Now, the LCD 9 can display mode information such as tone setting information, effect setting information, etc., but the mode display can be done by pressing the mode setting switch 1 in Fig. 3.
It changes each time you press 0. Here, what is particularly relevant to the present invention is the poly number setting mode. If a mode other than poly count setting mode is displayed, S
At step 9, after processing other than the poly number setting mode, such as changing tone color settings using switches 15 to 22 in FIG. 3, or changing effect settings using switches not shown, the switch change process ends.

On the contrary, if the poly number setting mode is displayed, the process advances to S6 and it is determined whether the mode setting switch 10 in FIG. 3 has been switched.

If the determination is YES, the process proceeds to 310, where the mode displayed on the LCD 9 in FIG. 3 is switched from the current poly number setting mode to another mode corresponding to the switching operation of the mode setting switch 10, and then the second The switch change process in FIG. 82 is completed. Therefore, from now on, the MID of S3 in Figure 2
When the switch change processing shown in FIG. 2 32 returns after the I IN processing, the determination shown in FIG. 3 55 becomes NO, and processing other than the above-mentioned poly number setting mode is executed in S9.

Although not specifically shown in the figure, the 56
There is a processing flow similar to -310, and when the mode setting switch 10 is switched to enter the poly number setting mode, the determination in S5 becomes YES and the process returns to the poly number setting mode.

If the determination in S6 is No, the process proceeds to 37, where it is determined whether any of the cursor switches 11, 12 in FIG. 3 has been switched. If the judgment is YES, proceed to Sll,
Select one of the multiple pieces of data displayed on the LCDQ. In this embodiment, the display on the LCD 9 shown in FIG. 3 in the poly number setting mode is as shown in FIG. 5, for example.

That is, as explained in the section "General operation of this embodiment," the sound source module according to this embodiment can set a poly number for each module, and the range of the poly number is P2 and P2 of the LCD 9 in FIG. It is displayed by the number shown at the P3 position.

In the example shown in the figure, it is displayed that poly numbers from 9 to Nα16 are assigned. Also, Pl in Figure 5
The symbol open displayed at the position indicates that the own sound source module is currently in the poly-synchronization operation ENABLE mode as explained in the section ``Overview of operation of this embodiment'', and if this display is OFF, Displays that poly synchronous operation is in DISABLE mode. The states displayed at each position of P1 to P3 are switched by the DOWN switch 13 and the UP switch 14 in FIG. 3, and the cursor switches 11 and 12 in FIG. Select whether to change the status. That is, in FIG. 5, the cursor 23 is currently located at the Pl position, and the PI
Although the data at the position can be changed, by pressing the cursor switch 11 or 12 in FIG. data can be changed. This cursor change process is performed in step 3 in Figure 4.
11, and after this cursor change process, the switch change process shown in FIG. 2 is completed.

After the above processing, when the switch change processing of FIG. 2 32 is started again after passing through the MiDI IN processing of S3 in FIG. 2, the third
The determination in FIG. 37 is No, and in S8 it is determined whether the DOWN switch 13 or the UP switch 14 in FIG. 3 has been pressed. If neither is pressed, the judgment of S8 is NO.
Then, the switch change processing of FIG. 2 82 is ended.

Contrary to the above, if any switch is pressed and the cursor 23 is at the position of Pl on the LCDQ in FIG.
DIS, /ENA, change processing is performed. Also, if the cursor 23 is at the P2 position on the LCDQ in FIG.
The judgment of 2 is NO, the judgment of 313 is YES, and S1
Perform the LOWER change processing in step 5. Furthermore, the LCD in Figure 5
If the cursor 23 is located at the position of P3 on the screen 9, the determination at 312 becomes YES/ES, and the UPPER change process at S14 is performed.

Hereinafter, the above three processes will be explained in order.

First, in the DIS, /ENA, change process in S16, as described above, the mode of the current own sound source module is changed to ENABLE mode of polysynchronous operation and DISAB mode by the DOWN switch 13 or UP switch 14 in FIG.
This is a process for switching between LE mode and LE mode. FIG. 6 shows details of the processing in FIG. 4 316.

First, in 317, the current mode is DI of the polysynchronous operation.
It is determined whether the mode is SABLE mode or ENABLE mode.

If the DISABLE mode, that is, the display of the position P1 in FIG. 5 is OFF, the determination in S17 is YES, and S1
8 to reset JOB DISABLE FLAG. This flag will be explained in detail later, but DISABL
This is a flag for setting E mode or ENABLE mode, and is provided in FLAG of the number of pronunciation allocation control memory configured in RAMa of FIG. 1 (see FIG. 10).

Then, this flag is reset in S18 to change to the ENABLE mode. Along with this process, the display of the position P1 in FIG. 5 is turned on.

On the other hand, the current mode is the ENABLE mode, that is, the fifth mode.
If the display of the position in figure P1 is ON, the determination in S17 is N.
O, and JOB DISABLE FLAG is set in S19.
When is set, the mode changes to DISABLE mode. Along with this process, the display of the position P1 in FIG. 5 is turned off.

Note that the process in S18 or S19 above is performed in the DOW mode shown in FIG.
The same operation is performed regardless of whether the N switch 13 or the UP switch 14 is pressed, and there is no distinction between the two switches.

After the processing in step 318 or 319, R in FIG.
Each POINTER and C0UNTER of the sound generation number allocation control memory shown in FIG. 10 configured in the AMg.

Initialize (clear to 0) FLAG and N0TE 5AVE MEMORY to mute all musical tones that are currently being produced. Note that the memory will be described later.

DIS, /ENA of FIG. 4 316 shown in FIG.
.

After the change processing, the switch change processing shown in FIG. 2 is completed.

Next, in the LOWER change process of 315 in FIG. 4, as described above, the lower limit of the poly number range currently set for the own sound source module is set by the DOWN switch 13 or the UP switch 14 in FIG. This is a process to change. FIG. 7 shows details of the process 815 in FIG. 4.

First, JOB RANGE LOWERPOI at 321
Load the value of NTER into register AIIEG and execute JOB
Load the value of RANGE UPPERPOINTER into register B REG. Here, JOB RANG
E LOWER POINTER and JOB RANGE
UPPERPOINTER will be explained in detail later, but it is a pointer that sets the lower and upper limits of the poly number.
It is provided in the number of pronunciation allocation control memory configured in the RAM 5 in FIG. 1 (see FIG. 10). Further, register AREG and register BREG are registers within CPUd in FIG. In addition, P2 and P of LCD 9 in FIG.
The values obtained by subtracting 1 from the lower and upper limits of the poly number displayed at position 3 are set in each of the pointers and registers.

After the processing in step 321, it is determined in step S22 whether or not the DOWN switch 13 in FIG. 3 has been switched. In this case, at 88 in FIG. 4, the DOWN switch 1 in FIG.
Since it is determined that either 322 or the UP switch 14 has been pressed, if the determination in 322 is YES, the DOWN switch 13 has been pressed, and if the determination is No, it means that the UP switch 14 has been pressed.

The DOWN switch 13 is pressed and the determination at 322 is YES (
7) If the register AIIEG (7) value is 0 in S23
It is determined whether or not. As explained in the section "General operation of this embodiment", the minimum value that can be specified as a poly number is 1, and the minimum value of the value on the register AREG is O, which is 1 less than that value.

Therefore, if the value of the register AREG is 0, it cannot be set to a value lower than that, so the determination at 323 becomes YES and the LOWER changing process at 315 in FIG. 4 ends. 0
Otherwise, the value of register AIEG is decremented by 1 in S24. Note that the value 0 in the register A REG corresponds to the poly number Nα1 in the display on the LCDQ in FIG. 5, as described above.

Conversely, if the UP switch 14 is pressed and the determination at 322 is NO, the value of the register AREG is incremented by 1 at S25.

After the processing of 324 or S25 above, 326 JOBRA
Proceed to NGE POINTER setting processing. The details of this process are shown in FIG.

In S33, the value of register AREG is set to register B IIE
It is determined whether or not the value of G is exceeded. As mentioned above (Fig. 7, 321), since the upper limit value of the poly number is stored in the register B REG, here, the lower limit value of the poly number to be newly changed in the register AREG is the upper limit value. Check that it does not exceed the value. If the determination in S33 is YES, nothing is done and FIG.
The register ARE changed in S24 or S325 after completing the process in S26.

The value of JOB RANGE UPPERPO is invalid.
The process of S15 in FIG. 4 is ended without changing the value of INTER.

In FIG. 9, if the determination in S33 is No, the process advances to S34. L
In the OWER change process, the value of the register B REG is not changed, so the determination in S34 is No (this process will be described later), and the process advances to S335. Here, register B R
It is determined whether the difference between the upper limit value of the poly number of EG and the lower limit value of the poly number of register AREG is 8 or more. In this embodiment, the number of polyphonic sounds that can be produced by one sound source module is 8, so here it is checked that the difference between the upper and lower limits is not set to 8 or more. Then, if the determination in S35 is YES, as in the case of S33,
Finish the process of 326 in FIG. 7 without doing anything, and proceed to the fourth step.
The process in FIG. 315 ends.

If the determination at 335 is NO, the next step 336 is 320 in FIG.
As in the case of , the first O configured in RAMa in FIG.
Initialize each POINTER, etc. in the sound generation number allocation control memory shown in the figure, and mute all musical tones that are being generated.

Next, in S37, the contents of register AREG are set to JOBRA.
Save to NGE LOWERPOrNTER and save the contents of register B REG to JOB RANGE LIPPE
Save to RPOINTER.

And JOB RANGE LOWER POINTE
As the contents of R are changed, the display of the position P2 in FIG. 5 is changed.

With the above processing, the processing in FIG. 7 326 is completed, and the fourth
The LOWER change process in FIG. 315 ends.

Note that the above series of processing is performed when the DOWN switch 1 in FIG.
3 or UP switch 14 is pressed once, and if it is pressed continuously, S3 in FIG.
By repeating the loop, the process is performed once each time S2 is executed.

Next, in the UPPER change process of 314 in FIG. 4, as described above, the upper limit of the poly number range currently set for the own sound source module is set by the DOWN switch 13 or the UP switch 14 in FIG. This is a process to change. FIG. 8 shows details of the processing in FIG. 4 316. The processing from 327 to S32 here simply changes the processing target from the contents of the register AREG regarding the lower limit value of the polynumber to the contents of the register BREG regarding the upper limit value.
LO of S21 to S26 in FIG. 7 corresponding to 315 in FIG. 4
This is similar to the WER change process.

That is, according to the operation of the DOWN switch 13 or the UP switch 14 in FIG.
Register B R loaded with the contents of RPOINTER
The contents of EG are incremented by +1 or -1, and the ninth
It is checked whether the contents of the register BREG changed in steps 333 to S35 in the figure are consistent with the contents of the register AREG.

In addition, in FIG. 9 334, it is determined whether the value of the register B 11E6 is 64 or more. As explained in the section "General Operation of this Embodiment", the maximum value that can be specified as a poly number is 64, and the maximum value of the value on register B BEG is 63, which is one less than that. Therefore, if the value of register B RIG is 64 or more, the setting becomes invalid, and the determination at 334 becomes YES, and the process shown in FIG.
32 is finished, and the UPPE of 314 in FIG. 4 is completed.
The R change process ends.

If all the checks in steps 333 to S35 are passed, in step 336, each POINTER, etc. in the sound generation number allocation control memory is initialized, and all musical tones being generated are muted. and,
In S37, JOB RANG the contents of register AIIEG.
E Save to LOWERPOINTER and register B
JOB RANGE UPPERPO contents of BEG
Save to INTER. Furthermore, JOB RANGE
UPPERPOINTER (7) Change the display of the position of P3 in FIG. 5 as the contents are changed.

Through the above processing, the processing in FIG. 8 332 is completed, and the UPPER change processing in FIG. 4 SI4 is completed.

As explained above, the cursor switch 11 in FIG.
12, the cursor 23 can be moved to each position of P1 to P3 on the LCD 9 of FIG. 5 through the processing of Sll of FIG. 4. Furthermore, when the DOWN switch 13 or the UP switch 14 in FIG. 3 is operated, if the cursor 23 is at the position of Pl, the DIS, /
ENA, polysynchronous operation ENABLE by change processing
mode and DISABLE mode can be switched. Also, if the cursor 23 is at the position of P2, S1
The lower limit of the poly number range can be changed by the LOWER change process in step 5. Further, if the cursor 23 is located at the position of P3, the upper limit of the poly number range can be changed by the UPPER change process at 314.

Next, the MIDI IN process in S3 of FIG. 2 will be explained. From this point on, after explaining the structure of the sound generation number allocation control memory shown in FIG. 10, the MID
Regarding the detailed operation of I IN processing, MI based on Fig. 11
This will be explained using an example of polysynchronization operation according to DI IN processing.

First, FIG. 10 is a block diagram of the number of pronunciation allocation control memory configured in RAMa of FIG. 1.

N0TE 5AVE and EMORY in the same figure (a) are 64
It is a byte structure and can save up to 64 NOTE numbers, and each byte corresponds to a poly number from 1 to 64. As shown in the figure, the configuration of each byte is N0TE No, where the lower 7 bits can take values from 0 to 127.
, the most significant bit (MSB) is the 0N10FF flag, and when this flag is 1, it indicates that the poly number corresponding to that byte is being muted.Furthermore, in this case, the lower 7 bits all take the value O, so , the value of 1 byte when muting is 80H (H indicates hexadecimal representation). These will be detailed later.

Next, pointers, counters, and flags will be briefly explained. Note that these will be detailed later.

The OFF POINTER in Figure 10(b) is the N0TE where the note-off N0TE No. was saved.
It is a relative address from the first address of 5AVE MEMORY and is a pointer that holds the smallest numerical value, and can take a value from 0 to 63 depending on the lower 5 bits. The value O is inserted into the upper two bits.

Figure 10 (C) (7) EMPTY C0UNTER is
Once in N0TE SAVE MEMORY N0TE N
This is a counter that holds the total number of addresses for which N0TE No. has not yet been written after the value 80H has been written after the note-off and the lower 6
It can take values from 0 to 64 depending on the bit. MSB has value O
is inserted.

Figure 10 (d) (7) ON POINTER is N0T
N0T saved in E 5AVE MEMORY
Among the E Nos., N0 has the largest relative address.
This is a pointer that holds the value obtained by adding 1 to the relative address of TE No. It can take a value from 0 to 63 depending on the lower 5 bits. The value O is inserted into the upper two bits.

JOB RANGE LOWERPO in Figure 10(e)
! NTER is a pointer that holds the lower limit value of the poly number as described above, and P
A value 1 smaller than the poly number displayed at position 2 is held, and the lower 5 bits can take values from 0 to 63. The value O is inserted into the upper two bits.

10th figure) JOB RANGE UPPERPOI
NTER is a pointer that holds the upper limit value of the poly number as described above, and is a pointer that holds the upper limit value of the poly number, and is
The number that is 1 smaller than the poly number displayed at the position is retained, and the JOB RANGE LOWERPOIN
It has the same bit configuration as TER.

Figure 10 (g) (7) NOTE ON C0LINTE
R is a counter that holds the total number of N0TE No. saved in N0TE SAVE MEMORY,
The lower 6 bits can take values from 0 to 64. The value O is inserted into the MSB.

FLAG in Figure 10 (5) is the lowest focus (LSB)
A JOB REQUEST FLAG and a JOB DISABLE FLAG are provided at the second bit from the least significant bit. JOB REQLESTFLAG is a flag that holds whether or not to request the input N0TE ON data to produce the N0TE No specified by that data, and JOB DISABLE FLAG
is a polysynchronous operation for its own sound source module.
This is a flag to set whether

The detailed operation of the MIDI IN process according to this embodiment using the above-mentioned tone number allocation control memory will be explained along with the operation flowcharts of FIGS. 12 to 14.

FIG. 12 is a detailed operational flowchart of the MIDI IN process of FIG. 233.

First, at 33B, the CPU 4 of FIG. 1 monitors whether MIDI data is being input via the external input interface circuit 1. If not entered, 338
The determination is NO, the MIDI IN process of FIG. 233 is immediately terminated, and S3 is repeated again via the switch change process of S2. Therefore, by repeatedly executing step 338, the MIDI data input waiting state is maintained.

[If the 01 data is input and the determination at 338 is YES, the process advances to 339, where it is determined whether the MID+ data is either N0TE ON data or N0TE OFF data. If No, the process advances to S50, processes other than note-on and note-off are performed, and the monitoring of 33B is repeated.

When the N0TE ON data or N0TE OFF data is input and the determination in S39 becomes YES, the process advances to 340, and the N0TE No included in the data is loaded into the register AIIEG in the CPU 4.

Next, in 341, the input MIDI data is
Determine whether it is 0TE ON data or N0TE OFF data. N0TE ON data is input and 34
If the determination in step 1 is YES, the process proceeds to step 342, where it is determined whether the polysynchronization operation is in ENABLE mode or DISABLE mode.

If the mode is DISABLE mode (when the display at the position P1 in FIG. 5 is OFF), the determination in S42 becomes YES and the process proceeds to 345, where the N0T set in the register AREG is
After performing N0TE ON processing according to E No.
Returning to the determination of 338. That is, the operation in this case is the normal sound generation operation of the sound source module, and the CPU 4 in FIG.
is the N0TE ON data N0T for the sound source circuit 6.
This is a process of unconditionally instructing to produce a sound at a pitch corresponding to E No.

If it is in the ENABLE mode (when the display of the position of Pi in Fig. 5 is ON), the determination in S42 is No and 343
The process then proceeds to N0TE ON JOB determination processing. This process is the most characteristic process of this embodiment, and will be described in detail later, but here it is determined whether or not to perform the N0TE ON process, and if it is performed, the number of sound generation allocation control memory shown in FIG. 10 (c) is determined. JOB REQtJEST in FLAG
Set FLAG to 1, and reset it to 0 if you do not want to do so.

This process sets 1 to JOB REQUEST FLAG.
is set, the determination in S44 is YES and 3
The process advances to step 45, where N0TE ON processing is executed. on the other hand,
If it is reset to 0, the determination in S44 becomes No, and
The process returns to step 338 without performing the N0TE ON process.

Contrary to the case where the above N0TE ON data is input, N
If the 0TE OFF data is input and the determination in S41 is NO, the process advances to 346 and the same determination as in 342 is made.

If it is in DISABLE mode, the determination of 346 is YE.
S, the process advances to 349, performs N0TE OFF processing according to the N0TE No set in the register AREG, and then returns to the determination in 33B. In other words, the operation in this case is a normal silencing operation of the sound source module, and the first
The CPU 4 in the figure tells the sound source circuit 6 to turn N0TEOFF.
This is a process for unconditionally instructing to mute the currently sounding musical tone corresponding to N0TE No. of the data.

On the other hand, if the mode is ENABLE, the determination in 346 is No and the process proceeds to 347, where N0TE 0FFJ
Performs OB discrimination processing. This process also applies to N0TEO of S43.
Along with the N JOB determination process, this is the most characteristic process of this embodiment, and will be described in detail later, but here, the N0TEOF
Decide whether or not to perform F processing, and if so, JOBREQ
Set UEST FLAG to 1, otherwise reset to 0.

This process sets 1 to JOB REQUEST FLAG.
is set, the determination in S48 is YES and 5
The process advances to step 49, where N0TE OFF processing is executed. On the other hand, if it is reset to 0, the determination at 348 becomes NO, and the process returns to step 338 without performing the N0TE OFF process.

Next, the operation flowcharts of FIGS. 13 and 14 corresponding to the N0TE ON JOB determination process of 343 in FIG. 12 and the N0TE OFF JOB determination process of S47 will be explained according to the operation example of FIG. 11.

First, in this embodiment, the explanation is given for one sound source module, but in that sound source module, the polynumber of Nα9 to Nα16, for example, as shown in FIG. Suppose that is specified. When the polyphony allocation control memory is initialized in FIG. 2 31, FIG. 6 320, or FIG. 9 336, ON POINTER=0 JOB RANGE LOWERPOINTER= as shown in FIG. 11(a).
8JOB RANGE UPPERPOINTER
= 15EMPTY C0UNTER= 0 NOTE ON C0tlNTER= 0OFF PO
INTER=indeterminate. Also, in this state, N0TE 5AVE M
The contents of EMORY are undefined.

Next, a keyboard or the like is played outside the sound source module, and the first
Each N0TE O whose N0TE No. is 20H to 34H is sent to the CPU 4 via the external input interface circuit 1 shown in the figure.
When 21 notes of N data are input continuously, the 11th
As shown in figure (b), the value of ON POINTER is 0.
→21, N0TE ON C0UNTERO value is also 0
-21, and N0TE 5AVE MEMORY 2 is 20H at the first address and successive relative addresses 0 to 20.
Each N0TE No. of ~34H is saved. In addition,
The value of OFF POINTER is undefined. in this case,
In the state shown in FIG. 11(b), the CPU 4 in FIG.
RANGE LOIJERPOINTER and JOB
A sound generation instruction is given to the sound source circuit 6 in FIG. 1 only for the N0TE No. saved in the relative addresses 8 to 15 corresponding to the polynumber specified by RANGE UPPERPOINTER. As a result, eight polyphonic sounds corresponding to poly numbers 9 to 16 are produced in the own sound source module.

The operation in the state shown in FIG. 11 etc. above is realized as follows.

First, each time one N0TE ON data is input, the MIDI IN process shown in FIG. 253 is repeated once.

Then, for each repetition, FIG. 12 338-339-3
40→S41-542-=S43, and the N0TE ON JOB determination process shown in FIG. 13 begins.

At 351 in Figure 13, N0TE ON CO[JNT
Determine whether the ER value is 64 or higher, and
If it is 4 or more, S 664: Proceed, JOB RE
Reset QUESTFLAG and set N0 in 343 in Figure 12.
The TE ON JOB determination process ends. That is, in this embodiment, the polyphonic number, that is, the number of simultaneous sounds is 6.
JOB REQU
By resetting ESTFLAG to O, the determination in FIG. 12 344 becomes NO, and no more N[)TE
In the example of FIG. 11(b) in which ON processing is not performed, the initial state is that the value of N0TE ON C0UNTER is 63.
Since it is the following, the determination in 351 becomes YES and the process advances to S52.

In S52, the value of N0TE ON C0INTEH is +
1 will be given. By repeating this process at S52 for each input of N0TE No, the N0TEON C0UNTERO value changes from 0 to 21 in the example of FIG. 11(b).

Next, in S53, it is determined whether the value of EMPTY C0UNTER is 0 or not. In the example of FIG. 11(b), since it is 0, the process proceeds to 354.

Here, the value of ON POINTER is stored in register CRE.
After loading into G, add 1 to the value of ON POINTER. In other words, ON POINTER is as shown in Fig. 10(d)
As explained in N0TE 5AVE MEMORY
1 to the relative address of the N0TE No. with the largest relative address among the N0TE No.s saved in
Since the value obtained by adding N0TE No. is stored, the process in S54 is repeated for each N0TE No., so that the relative address at which N0TE No. should be saved this time is set in the register CREG. Moreover, here, in the example of FIG. 11Cb), ON POiNTER
The value changes from 0 to 21.

In S56, N0TE 5AVE M in FIG. 10(a)
The relative address set in the register CREG is added to the first address (absolute address) AD of EMORY to calculate the absolute address corresponding to the relative address, and the address is sent to the register Augs at 340 in FIG. Safe the N0TE No. This S54
By repeating the process for each input of N0TE No., in the example of FIG. 11(b) (7), N0TE 5A
Each N0TE No. of 20H to 34H is saved at consecutive relative addresses O to 20 from the first address of the VE MEMORY.

In S57, the relative address set in register CIIEG is JOB RANGE LOWERPOI.
NTER value and JOB RANGE UPPERPOI
It is determined whether the value is within a range determined by the value of NTER. And if it is included, JOB REQ for 35B
LIEST FLAG is set to 1, and if it is not in, it is reset to O in S59. By repeating this determination in S57 for each input of N0TE No.
In the example of FIG. 11(b), JOB RE is only applied to N0TE No saved at relative addresses 8 to 15.
QUEST FLAG is set to 1, otherwise O
will be reset to

Subsequently, in S60, it is determined whether the value of EMPTY C0UNTER is O. In the example of FIG. 11(b), it is 0, so this determination is YES, and N0 of 343 in FIG.
The TE ON JOB determination process ends.

Then, at 344 in FIG. 12, JOB REQUEST
The determination is Y only if FLAG is set to 1.
It becomes ES and proceeds to 345, where N0TE ON processing is executed. By repeating this determination in S44 for each input of N0TE No., in the example of FIG. 11(b),
As mentioned above, N saved at relative addresses 8 to 15
Only for 0TE No., a sound generation instruction is given to the sound source circuit 6 of FIG. 1.

Next, the explanation returns to FIG. 11. In the state shown in figure (b), 2
When the external keyboard corresponding to each N0TE No. of BH132H and 23H is released, each of those N0TE No.
.

When the N0TE OFF data corresponding to 2BH, 32H, and 23H are input in the above order, the value 80H indicating mute is stored in the relative addresses 11.18 and 3 where each N0TE No. of 2BH, 32H, and 23H was stored, and at the same time, the OFF POINT
The value of ER (relative address) changes to indeterminate -11-11-3 (Fig. 11 (C) ■-■-■). Note that in the process of ■, N0TE No. = 32 H is stored. The relative address 18 is N0TE No, =
Since 2 B H is larger than the relative address 11 at which it was stored, the value of OFF POINTER does not change to 18. Also, the value of EMPTY C0UNTER is 0 →
1 → 2 → 3, N0TEON C0UNTER (7) value changes as 21-20 → 19-18. However, ONP
The value of OINTER does not change. In this case, C in Figure 1
PU4 is in the state shown in Fig. 11 (C), JOB RANG
E LOWER POINTER and JOB RANGE
The value 8 at relative addresses 8 to 15 corresponding to the polynumber indicated by UPPERPOINTER
N0TE rewritten to 0H No, = 2 B
Only for the relative Atsushi 11 where H was stored,
The sound source circuit 6 in FIG. 1 is instructed to mute the N0TE No.

The operation in the state shown in FIG. 11(C) above is realized as follows.

First, every time one N0TE OFF data is input, the second
The MIDI IN process in FIG. 83 is repeated once.

Then, for each repetition, FIG. 12 338-331-3
40-→S 41-”S 46→S47 and enters the NOTE OFF JOB determination process shown in FIG. 14+7).

At 367 in FIG. 14, O is first set in the register CREG, and in the next loop processing of 568-369→S70→368, the register CRE is set at S70.

While incrementing the value of N0 by +1, the note-off value N0 set in the register AIIEG in S69 is
Compare TE No. with the contents of the address (ADo 10C*tG) on N0TE 5AVE MEMORY and search for a match. Note that in S68, register C
The relative address specified by REG is N0TE 5AVE
N0TE No, no longer exists on AEMORY
Determine whether the value of N POINTER has been reached. When this value is reached, the judgment of 868 becomes YES and 382
Then, JOB REQUESTFLAG is reset to 0, and the N0TEOFF JOB determination process at 347 in FIG. 12 is completed. Therefore, in this case, N0TE 5AVE
The corresponding N0TE No. does not exist on MEMORY, and the determination at 348 in FIG. 12 becomes NO.
The N0TE OFF processing of H.349 is not performed.

By repeating the loop process of S68→S69-370-368 in FIG. 14 above, in the example of FIG. 11.
18 and 3 are searched.

Then, in the above process, every time a relative address with matching N0TE No is searched, the determination in S69 becomes YES and S
Proceed to 71. Here, the searched address (ADO+
C11EG), the value 80H indicating that the sound is muted is stored, and the EMPTY C01lNTER(7) value is 1,000.
be done. By repeating this process of 371 for each entry of N0TE No., in the example of FIG. 11(C),
Relative addresses 11, 18 and 3 do not indicate mute, value 80H
is stored, and at the same time the value of E14PTY C0UNTER changes from 0-1-2 to 3.

Next, in S72, the value of EMPTY C0UNTER is 1.
If it is 1, register C is determined at 374.
Save the value of IIEG to OFF POINTER.

In the example of FIG. 11(C), this process is performed for the first N0
TE No.

This is executed when the relative address 11 corresponding to =28H is retrieved and the value of OFF POINTER changes from undefined to 11.

If the determination in S72 is NO, 0FFPO is determined in S73.
Compare the value of register CREG of INTER, and if the value of register CREG is larger, turn OFF POINTE
The value of R is not changed. In the example of FIG. 11(C), this process is turned OFF when the relative address 18 corresponding to the second N0TE No. = 32H is retrieved.
This is executed when the values of POINTF and R remain 11 and do not change.

Contrary to the above, if the value of register C1lEG is smaller, turn off the value of register CREG (7) POINT
Save ER. In the example of FIG. 11(C), this process is performed when relative address 3 corresponding to the third N0TE No. = 23H is searched, OFF PO
It is executed when the value of INTER changes to lJ-.3.

Above S72-374 (7) Processing grin, OFF POI
NTER stores the smallest relative address among the relative addresses in which the value 80H indicating that the sound is currently muted is stored.

In S75, the relative address set in register CREG is JOB RANGE LOWERPOIN.
TER value and JOB RANGE UPPERPOIN
It is determined whether or not it is within a range determined by the value of TER. And if you enter S 76 Te JOB RE
QLIEST FLAG is set to 1, and if it is not in, it is reset to 0 in S77. By repeating this determination at 375 for each input of N0TE No, in the example of FIG.
JOB REQUEST FLAG is set to 1 only for the relative address 11 where 2BH was stored, and is reset to O for the others.

Next, in step 378, the value of the register CREG is incremented by 1, and in the following S79, the register CREG and the value of ON POINTER are compared, and the value of register CREG≧ON POIN
If it is TER, the value of ON POINTER is decremented by 1 in S80. These processes are N0TE 5AVE ME
MOTIY (7) NOTE No. When note-off is performed on (7) NOTE No., which has the largest relative address, this is a process of bringing the ON POINTER value to the note-off relative address. Figure 11 (
In the example of C), the determination of 379 is always No and ON.
The value of POINTER does not change.

Finally, in S81, N0TE ON C:0UNTER
By subtracting the value of 1 by 1, N0TE O in Fig.
FF JOB determination processing ends. Processing in S81 for each N
By repeating the operation for each input of 0TE No, Figure 11 (
In the example of C), the N0TE ON C0UNTERO value changes from 21 to 20 to 19-18.

After the above processing, in FIG. 12 348, the aforementioned FIG. 14 376
Only when 1 is set in JOB REQUEST FLAG, the determination becomes YES and the process proceeds to 549, where N0TE OFF processing is executed. By repeating this determination at 34B for each input of N0TE No., in the example of FIG.
A mute instruction is given to the sound source circuit 6 in FIG. 1 only for the relative address 11 where TE No.=2BH was stored.

Returning to the explanation of FIG. 11 again. In the state shown in (C) of the same figure, a new key press operation is performed on an external keyboard, etc., and the
and N0TE O corresponding to each N0TE No. of 52H.
Consider the case where N data are input in sequence.

First, N0TE No, = 50 H N0TE O
When N data is input, 50H is OFF POIN
Written to relative address 3 specified by TER and turned OFF
The value of POINTER is changed to the minimum relative address 11 where the value 808 indicating that the sound is currently muted is stored, and the EMP
The value of TY C0IJNTER is changed to -1 to 3-2, and the value of N0TE01J C0UNTER is +
1 and changed from 18 to 19. Next, N0TE
When N0TE ON data of No, = 51H is input, 51H is written to relative address 11 indicated by OFF POINTER, and the value of OFF POINTER is changed to relative address 18. Along with this, EMP
The value of TY C0tlNTER is changed from 2 to 1, and the value of N0TE ON C0UNTERO is changed from 19 to 20. Furthermore, when N0TE ON data of N0TE No, = 52H is input, 52H turns OFF.
It is written to the relative address 18 indicated by POINTER, and the value of OFF POINTER is fixed, EMP
TY C0UNTER (7) value changes from 1 to 0, N0T
The value of E ON C0UNTER changes from 20 to 21.

That is, by the above operation, the value of OFF POINTER changes from the state of ■ in the first construction drawing (C) to the state of ■ - in the same drawing (d).
・Changes to ■. In this case, the CPU 4 in FIG.
In the state shown in Figure 1 (d), select JOB RANGE LOWER.
POINTER and JOBRANGE tlPPERP
A sound generation instruction is given to the sound source circuit 6 in FIG. 1 only for the N0TE No. 51H saved at the relative address 11 included in the relative addresses 8 to 15 corresponding to the poly number indicated by OINTER.

The operation in the states shown in FIGS. 11(C) to 11(d) above is realized as follows.

First, each time one N0TE ON data is input, the MIDI IN process shown in FIG. 253 is repeated once.

Then, for each repetition, S38→539-3 in FIG.
40-341-342-→S43, and as in the case of FIG. 11(b), N0TE 0NJO in FIG.
B-discrimination processing begins.

In the state of Figure 11 (C), N0TE No, = 50
When the N0TEON data of H is input, the determination in S51 is N.

Then, in S52, the value of N0TE ON C0UNTER changes to 18-19.

Next, the determination in S53 is that the current EMPTY C0UNTE
Since the value of R is 3 (the state shown in FIG. 11(C)), the result is NO and the process proceeds to S55. Here, EMPTY COUNT
The value of ER is decreased by -1 and changed from 3 to 2, and OFF PO
The value of INTER is loaded into register Cl1EG.

In the following S56, N0TE 5AVE 14HMORY
(7) Save N0TE No stored in the register AREG at the address obtained by adding the relative address of the register CREG to the starting address A Do. 11th
In the example of Figures (C)-(d), N0TE No, = 50
If H is input, N0TE No, =50H is written to relative address 3.

JOB REQtlEST FLAG for S57-S59
The processing related to this is exactly the same as in the case of FIG.
The value 3 of EG does not satisfy the condition of S57, and the job is rejected in S59.
O is reset to REQUESTFLAG.

Next, the judgment of S60 is that the current EMPTY C01JNT
Since the value of ER is 2, the result is NO and the process proceeds to 361.

The loop processing of S61→362→S63→S61 is performed in S5
5. Since the new N0TE No. was saved at the relative address pointed to by the OFF POINTER in S56, the OFF POINTER is moved to the youngest relative address where the value 80H indicating muting is stored. In other words, in 362, the value of register CREG is set to 1.
While incrementing the address (A) in step S63,
DII +CREG) has a value of 80 indicating that the sound is muted.
Compare whether it matches H. In S61, it is determined whether the search range does not exceed the upper limit 63 of the relative address of N0TE 5AVE MEMORY.

If EMPTY C0tJNTER is not O, there is always one more relative address indicating mute, so S61
It is impossible for the judgment to be YES, but if it is YES for some reason, proceed to 865, perform appropriate error handling, and then execute JOB REQUEST in 366.
Reset FLAG to 0. That is, in this case,
The determination at 344 in FIG. 12, which will be described later, is NO, and no silencing operation is performed.

If the determination in S63 is YES and a relative address indicating that the sound is muted is found, the register CRE indicating it is set in S64.
Save GO value to OFF POINTER.

As a result, in the example of Fig. 11 (C) → (d), N0TE N
o, = 50I] is entered, OFF POI
The value of NTER changes from 3 to 11.

By the above processing, N0TE 0NJ of 343 in FIG.
The OB determination process ends.

After the above operation, JOB REQUEST at S 4 '4
The value of FLAG is determined. Figure 11(C)-(d)
In the example above, if N0TE No, = 50H is input, JOB REQLESTFLAG is reset to 0 as described above, so the determination of 344 is NO, and N0
TE ON processing is not performed.

Hereinafter, even when the N0TE ON data of N0TE No. = 51 H and 5211 are input, the operation is the same as that described above, and the operation is performed as described in FIGS. 11(C) to 11(d).

As explained above, N0TE 5AVE MEM maintains the state regarding the poly number assigned to itself as well as the state regarding the poly number assigned to all other sound source modules in the sound source module.
ORY, and for each input of N0TE ON and N0TE OFF, the above N0TE 5AVE MEM
The contents of ORY(7) are updated. and,
If a plurality of sound source modules are connected, this operation will be performed synchronously for each sound source module.

This means that N0TE ON and N0TE OFF data are input to all sound source modules in parallel, and each sound source module inputs N0TE 5AVE MEM according to the same rules.
This is to rewrite the contents of ORY. Furthermore, each sound source module has a polynumber range set for itself.
Based on the N0TE ON instruction, the sound is generated only when < N0TE No, is sent, and N0TE OF is performed for N0TE No, which is set in the above range.
By performing the muting operation only when the F instruction is given, each sound source module can perform the polyphonic operation in a shared manner.

An identification code called a MIDI channel is usually added to the N0TE ON data or N0TE OFF data input as MIDI data, but in this embodiment, no particular processing is performed on the MIDI channel. The MIDI channel allows data to be received only when data having the same channel number is input, and allows each musical instrument to receive or transmit separate data. Furthermore, for example, even one sound source module may have the ability to specify multiple MIDI channels, thereby allowing multiple types of musical tones to be produced under separate controls. In order to be able to support such a function in this embodiment, for example, a range of polynumbers may be specified for each MIDI channel. In addition, the operation flowchart shown in FIG. 10 corresponding to the MIDIIN processing shown in FIG. Bye.

In addition, in this embodiment, N0TEON (pronunciation) and N0TE
Although only the OFF (mute) instruction is controlled based on the polynumber, the control is not limited to this, for example, when MIDI information or bend information that changes the pitch for a predetermined N0TE No. is input. By performing similar control on the sound source module, a plurality of sound source modules can be linked to perform bend control and the like. Similar control is also possible when adding various other effects.

[Effects of the Invention] According to the present invention, when a plurality of sound source modules are connected and each sound source module is operated simultaneously, the updating operations on the note information storage means in each sound source module are completely consistent according to the same rule. Since each sound source module controls the production of musical tones by sharing only the polyphonic channel within the second polyphonic area specified for each sound source module, the connected sound source modules as a whole function as if they were a single sound source module. It is possible to operate the device as if it were producing musical tones, and the number of polyphonic devices can be expanded according to the number of connected devices.

In particular, the polyphonic area specifying means of each sound source module can arbitrarily set the second polyphonic area by an upper limit value and a lower limit value, can also set the polyphonic number to be different for each sound source module, and can overlap each other. You are also free to do so. This makes it possible to perform detailed expansions that take advantage of the characteristics of each sound source module.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of an embodiment of the present invention, Fig. 2 is a main operation flowchart, Fig. 3 is an external configuration diagram of a console switch and display device, and Fig. 4 is an operation flowchart of switch change processing. , FIG. 5 is a diagram showing a display example of the number of pronunciation settings on the display device, FIG. 6 is an operation flowchart of DIS, /ENA, change processing, FIG. 7 is an operation flowchart of LOWER change processing, and FIG. 8 is an operation flowchart of UPPER change processing, FIG. 9 is an operation flowchart of JOB RANGE POINTER setting processing, FIG. 10 is a configuration diagram of the polyphony number allocation control memory, and FIGS. 11(a) to (d) are polyphony Figure 12 is an operation flowchart of MIDI IN processing, Figure 13 is an operation flowchart of N0TE ON JOB determination processing, and Figure 14 is an operation flowchart of N0TE OFF JOB determination processing. be. 1...External input interface circuit, 2...ROM
. 3...RAM, 4...cpu. 5... Console section interface circuit, 6... Sound source circuit, 7... D/A section, 8... Console switch, 9... Display device (LCD).

Claims (1)

[Scope of Claims] 1) In a sound source device capable of receiving note information from the outside and controlling the production of musical tones based on the note information, within a first polyphonic area consisting of a plurality of polyphonic channels, a second polyphonic polyphonic area specifying means for specifying an area by an upper limit value and a lower limit value; note information storage means for storing note information for each polyphonic channel in the first polyphonic area; polyphonic channel control means for updating the note information of the polyphonic channels in the first polyphonic area on the note information storage means according to the rules; and each polyphonic channel in the second polyphonic area on the note information storage means. 1. A sound source device comprising: a musical tone control means for controlling the sound production of musical tones based on note information stored in the sound source device. 2) A mode in which musical sound production is controlled based on note information stored in each polyphonic channel in the second polyphonic area on the note information storage means, and a mode in which musical tone production is controlled unconditionally based on the received note information. 2. The sound source device according to claim 1, further comprising musical tone control means capable of switching between modes for controlling musical tone production. 3) The note information input from the outside is MIDI (
Musical Instrument Digital I
3. The polyphonic area specifying means, the note information storage means, the polyphonic channel control means, and the musical tone control means operate independently for each MIDI channel. The sound source device described.