JPS6211893A - Electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electronic musical instrument having a plurality of musical sound generation channels and employing a sound generation assignment method, and particularly relates to an electronic musical instrument having a plurality of musical tone generation channels, and in particular to a method for producing one key by effectively utilizing a predetermined number of musical tone generation channels. This invention relates to an electronic musical instrument that simultaneously generates a plurality of musical tones in response to operations.

“Conventional technology” Recently, with the development of computers and semiconductor technology,
Various digital electronic musical instruments using SI (large scale integrated circuit) components and the like have been developed and put into practical use. FIG. 1 is a block diagram showing the conceptual structure of a conventional digital electronic organ.

As shown in the figure, a conventional electronic organ consists of a block (5) consisting of a keyboard circuit 11, a key coder 2, a channel assigner 8, an envelope generator 5, a unique generator 6, a D/A converter 7, and an amplifier. 8, a block consisting of a speaker 9 (Bl).

The keyboard circuit 1 has a large number of key switches provided corresponding to each keyboard key (hereinafter simply referred to as a key). Key coder 2 turns on and off each of the above key switches.
Detects the off state and sequentially outputs key codes representing the pressed keys. The channel assigner 8 provides an n-mantissa musical tone generation channel (hereinafter simply referred to as a channel) in the Unibu generator 6 to generate a musical tone corresponding to a pressed key code (pressed key) supplied from the key coder 2. Allocate to 3 times. In this case, the channel assigner has a memory location corresponding to each channel, and the key code representing the key is stored in the memory location corresponding to the nth channel to which the sound of a certain key is assigned, and the key code representing that key is stored in each memory location. −
The n key codes are sequentially and time-divisionally output to each channel of the Uniibu generator 6. This channel assigner 8 still sends an envelope start signal to the envelope generator 5 in a time-division manner in synchronization with the output of the key code, which indicates that the pressed key should not produce a sound in the ttfc channel to which the sound is assigned. Output to
Furthermore, when the keys assigned to each channel are released,
When the key is released, a decay start signal indicating that the musical tone corresponding to the nth key released should be attenuated is outputted to the envelope generator 5 in a time-division manner.

Envelope generator 5 is channel assigner 8
Based on the envelope start signal and decay start signal of each channel supplied from the control circuit, envelope information (envelope waveform) for controlling the sound production of musical tones of each channel is output corresponding to each channel.

The Unibu generator 6 has a plurality of channels (for example, f2 channels), and forms a musical tone signal independently for each channel, and is composed of, for example, a frequency information memory, a waveform memory, etc. A musical tone signal (digital signal) is formed in each channel based on the key code of the pressed key supplied from the channel assigner 8 and the envelope information supplied from the envelope generator 5. Then, the musical tone signal (digital signal) formed in each channel of this Unibu generator 6 is D
/A (digital/analog) conversion circuit 7 converts it into an analog musical tone signal, and sends it to the speaker 9 via the amplifier 8.
The sound is emitted as a musical sound. The above-mentioned conventional digital electronic organ is disclosed in Japanese Patent Application Laid-open No. 180218/1989 filed by the applicant of the present invention.

"Problems to be Solved by the Invention" By the way, the channel assigner 8 in the above-mentioned electronic organ is designed to assign the musical tone produced by each pressed key to one of a plurality of channels.
It has not been possible to simultaneously generate a plurality of musical tones with slightly different musical characteristics such as timbre and envelope in response to t pressed keys to obtain an unsampled effect. If you try to simultaneously generate musical tones in the mantissa series for each pressed key, for example,
As shown in No. 26528, a plurality of Unibu generators must be provided in parallel, making the configuration extremely complicated.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an electronic musical instrument that has a simple configuration and can simultaneously generate multiple series of musical tones with different musical tone characteristics in response to a single pressed key. It is in.

"Means for Solving Problems" The electronic musical instrument of the present invention is characterized by having the following constituent features.

fc) a keyboard having H number of keys; A plurality of memory sections 1 are provided corresponding to the plurality of musical sound generation channels, and each memory section 1 stores data corresponding to the keys, and the data stored in each memory head is stored therein. (dl) assigning each key operated on the keyboard to one of the plurality of musical tone generating channels, and assigning the key in response to the assignment; fe) an assignment means for writing data corresponding to a key assigned to the channel into the storage means of the pre-fli'Fs self-storage means corresponding to the musical tone generating channel that was carried out; and fe) the assignment means are the same (f) a t-th control means for controlling the operated keys to be assigned to at least two of the plurality of musical tone generation channels; (f) the at least two musical tones to which the same keys are assigned; a second control means for controlling the generation channels to generate different musical tone signals;

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing the configuration of an electronic organ (electronic musical instrument) according to an embodiment of the present invention.The electronic organ shown in this figure is roughly divided into a keyboard circuit 11, an assigner 12, and a musical tone generator 18. Explode. The assigner 12 includes a calculation control section 19 including a control section 14, a calculation section 15, an interrupt control circuit 16, a pulse generator 17, a data board) 18, a ROM (IJ-only memory) 20, and a RAM ( random access memory) 21
, a first storage unit 2B having a register 22, and a musical tone generator 7111B including a Unibu generator (hereinafter referred to as WG) 25 having 82 channels.
, an envelope generator 26 that sends envelope information to the WG2fi, a D/A (digital/analog) conversion circuit 27, an amplifier 28, and a speaker 29. Note that the above-mentioned control section 14 and calculation section [5 (hereinafter referred to as blank space) are usually constructed using a microcomputer.

Furthermore, the envelope mentioned above is the envelope of the musical tone signal. In other words, a normal musical tone signal has a rising state (attack state) B1, a sustaining state B2, and a falling state (decay state), as shown in FIG. 2 (indicated by the symbol B).
It has an envelope that goes from the three states of B3.

This electronic organ operates under a program control, and the program is based on the processing blocks stored in the ROM 20 and each scale stored in the microprogram memory 45 in the section 14. The microphone program consists of 1 gram. Also, various tone data and frequency data necessary for forming a musical tone signal (digital signal) in the WG 25 are stored in the ROM 20. It operates as follows based on the microb [l-gram. That is, when 4-1 is pressed, the keyboard circuit 11 first sends the key switch information corresponding to the pressed key via the data bus 30. supply to A1J Inno 12.

The assigner 12 reads frequency data and tone data corresponding to the supplied key switch information from the ROM 20 and allocates the read data to a plurality of channels of the W G 25. Each channel of the WG 25 forms a musical tone signal (digital signal) based on data assigned to the channel and envelope information supplied from the envelope generator 26. Then, the musical tone signals formed by these channels are sent to the D/A converter 27.
(The signal is converted into an analog signal at step c, and is emitted as a musical tone from the speaker 29 via the amplifier 28.

The outline of this electronic organ has been described above, and now the details of this electronic organ will be explained.

First, the keyboard circuit 11 is composed of an address decoder 34, a buffer bus driver 35, and a matrix circuit 36. The address f':1-der 34 decodes the switch address signal supplied via the address bus 37, and has five output terminals in this embodiment, and each of these output terminals is connected to a master terminal.・Rix circuit 36. The matrix circuit 36 has a matrix of 12 rows and 5 columns, and each fulcrum of this matrix is connected to a tone lever (1 violin-1, [flute 1, etc.) to set the color combination. The contacts of each switch on the lever 38 and the contacts of each key switch of the keyboard 4--39 are inserted together with a diode as shown by the symbol η in the figure. In the example, the lever 38 is made up of six tone levers, and each tone lever is capable of adjusting the volume in four levels. Therefore, information regarding each tone lever is is represented by 2 bits, and corresponding to these 2 bits, the 1 to - tone lever switch has 2 bits for each tone lever.
(112 keys in total), and the keyboard 1-39 is made up of 4A tave (12×4=48 keys). The switches of each tone lever are arranged in one row on the left side (in the figure) of the matrix circuit 36 (
In the figure, the two switches surrounded by broken lines correspond to one tone lever), and the key switches of the MP board keys 39 are arranged in four rows on the right side of the matrix 36.

Buffer bus driver 351: This is the second bus driver that outputs the A/A information of the can open switch to the buffer bus 30, and has 12 input terminals and output terminals. The input terminals are connected to each row line of the matrix circuit 3G, and the output terminals are connected to the data bus 30.

The control unit 171 has an instruction register/I2, an instruction register 43, a microphone n 11'1 gram j7 dress sequence! j 44, microphone [-1
It is composed of a first gram memory 45 (second storage section) and a pipe register 716. The instruction register 42i reads out the Ql immediately from the ROM 20.
Since each instruction of one program is temporarily stored in the instruction decoder 43, the instruction temporarily stored in the instruction line register 42 is decoded by the instruction decoder 43 and supplied to the microphone address sequencer 44. Mike[]bu[1g address datan 1
)/'14 (instructor) - specifies the address of the microphone program memory 45 based on the output of the programmer 43;
5 to 15: A microprogram corresponding to one gram of instructions temporarily stored in the instruction register 42 is read out, and the microprogram is read out from the pipeline register 46.
supplied to

The input unit 15 includes a microfunction decoder (hereinafter abbreviated as M[[)) 48, an input circuit 49, etc.
It is configured to decode each instruction of the microprogram supplied from the control unit 14 and execute predetermined processing. That is, the M day I8 decodes each instruction of the microphone [1p[1grano\] supplied from the pipeline register 46, and based on the decoding result, register group 50, multi-break registers 51, 52, and arithmetic circuit. 49, memory address register 53, data register 54, output i
- Output control signals to buffers 55 and 56, respectively.

The register group 550 is a working register used in the process of processing each instruction of the microprogram, and the output of the arithmetic circuit 49 is read by the control signal from the M Fl) 48. 51 is supplied to the second input terminal. The multi-branch 51 has a first input terminal of -f connected to the data bus; 30;
The third input terminals are respectively connected to the output terminals of the data registers 54 (MF r, ), and selectively operate the data obtained at the C first and third input terminals based on the control signals from the data registers 54 and 48, respectively. It is output to circuit /I9. Multiplex I
The first input terminal of the bus 52 is connected to the f-tabus 30, and the second
The input terminals of are connected to the output terminals of the data register 54, respectively, and the data obtained at these first and second input terminals are selectively output to the arithmetic circuit /I9.

The arithmetic circuit 49 receives various data supplied from the multi-block recorders 51 and 52 (J is address data specifying the address of each memory in the first storage section 23, and J is used when assigning the above-mentioned keys to channels. There is data to be processed) based on the control signal from the M FED 48, and the result of the calculation is supplied to the memory address register 553 or the data register 54. The memory address register 53 is supplied from the decoding circuit 49. The output of this memory address register 53 is outputted to the address bus 37 via the output buffer 55.The data register 54 stores the data (-) supplied from the display circuit 49. The output of this data register 54 is outputted to the data bus 30 via a put buffer 56.

The interrupt control circuit 16 performs various processes when an interrupt occurs. Here, the interrupt signal of this electronic organ will be explained. This electronic organ has three interrupt signals INTF.
It has R1, INTER2, and INIFR3. Interrupt signal INTER1'G is an interrupt signal that is periodically generated in the interrupt control circuit 16 every several m5ec based on the output of the L pulse generator 17.
When this occurs, on/off information for each key switch on the keyboard 4 knee 39 is read into the RAM 2i. Interrupt signal I
NT[R2 is the output of the pulse generator 17 to the interrupt control circuit 1
This is an interrupt signal created by dividing the frequency by a frequency divider in 6, and is generated periodically every several hundred m5ec. and,
When this interrupt signal INTO'R2 is generated, on/off information for each switch of the l-on lever 38 is read into the RAM 21.

Note that the period h of the interrupt signal INTER2 (interrupt signal INT
The reason why the cycle is much longer than that of ER1 is that the keys on the stand are normally operated frequently, whereas the keys on the tone levers are operated infrequently. The interrupt signal INTER3 is an interrupt signal supplied from the W G 25, and is generated at time 1j, (when the musical tone signal formed in each channel in the W G 25 becomes 0. The interrupt signal INTFR3 will be described later.

These interrupt signals lNTE111 to INIFR
When any one of 3 is issued, the control unit 14 detects this and issues an interrupt command to the currently executing microphone register. 42 and decodes it.

The priorities of the interrupt signals INTER1 to INTER3 are determined in the interrupt control circuit 16 as follows: rNTIER3>INTER1>INTER2.

As described above, the ROM 20 stores the processing program, frequency data, signal data, etc., and is supplied with address signals from the output buffer 55 via the address bus 37. Each command or various data of the processing program read by the same address signal is output to the data bus 30. RAM21 is
Departmental data tables used for channel assignment,
Data files and the like are stored therein, and address signals are supplied from the output buffer 55, and its input/output ends are connected to the data bus 30. register 22
is used to store various statuses or commands (described later), address signals are supplied from the output buffer 55, and its input/output terminals are connected to the data bus 30.

The data boat 18 transfers frequency data and tone data stored in the ROM 20 and various commands stored in the register 22 to the WG 25 and the J envelope page I.
This is a register for outputting to the generator 26, an address is supplied from the output buffer 55, and its input end is connected to the data bus 30. <'L, see FIG. 14 for the storage contents of the ROM 20, RAM 21, register 22, and data port 18 described above.

Next, the operation of the electronic organ (not shown in 2M) will be explained based on the flowchart shown in FIG. In the following explanation, 1" indicates a "1" signal at the immediate level of binary theory;
1011 indicates a binary logic level "0'' signal η.

Figure 3 (a) is a flowchart showing the flow of the program.
FIG. 3(b) shows an interrupt processing routine. As shown in this figure, the program of this electronic organ is R1-R
8 main routines and ■ 3 which becomes 1 to I3
It consists of interrupt handling routines. Each routine is made into a plurality of microprogram modules and stored in the microprogram memory 45, and microinstructions for calling these microprogram modules are stored in the ROM 20 as a processing program. Each of the above routines will be explained in turn below.

(1) Initial Reset Routine [<1 When the cold source is turned on in this electronic organ, the program first executes this Initial Reset Routine [Enter Step 1, Initial Reset for Each Part].

(2) 1--Lever on/off detection routine This interrupt processing routine requires that the interrupt signal QINTFR2 is several hundred meters long.
It is executed every time an interrupt signal INTER2 is generated, and it is executed every time an interrupt signal INTER2 is generated. This is to detect. That is, when the interrupt signal TNTFR2 is generated in the interrupt control circuit 16,
A switch address signal is supplied to the address decoder 3/I, and based on this switch address signal, on/off information of each of the 1 to -n lever switches is transferred to the register 22 via the buffer door bus driver 35 and data bus 30. is read into.

Then, turn on/off the loaded tone lever switch.
71 based on the information, the register 22 shows (shown in FIG. 4)
Nikoton 1-tube status table (hereinafter referred to as N
(abbreviated as TS) 60 is created. In this case, this N
``At I-860 (Yo, each 1~-nlever 1~6
The 7f +-13 setting is indicated by -) in binary. That is, in the example shown in the figure, the tone 1 bars 1, 4, 5, and 6 require T< 1itr ()J, and the tone lever 2 requires the tone ft411. I, 1 to -
lever 3 is requesting B&H21.

(3) h-on lever position IN-change detection routine [<2 before] When the initial 1-pitch 1-routine R1 is completed,
The program proceeds to step 2 in this routine. In this routine R2, the contents of N T' S 60 in the current file are the same as the contents of N1560 in the last time this routine [<2 was executed, and the + point is %'! 1), so the contents of this NTS 60 and RA
A-Ruby 1~-Nlever status table (hereinafter referred to as OT S) created in M21; Tan 14
By comparing the contents of 61 (see figure), 1 and 10 detection is performed. J30TS611 shows the contents of S60 when this routine R2 was executed last time, and is created in routine R3 to be explained next. is rYE
In the case of sj (changed), the program proceeds to routine R3, and in the case of lN0J (no change), the program proceeds to routine R4.

(4) Tone Lever Processing Routine R3 This routine R3 is for creating a tone lever processing file 62 in the RAM 21 as shown in FIG. 4 based on the contents of the NTS 60 described above. Therefore, in this electronic A organ J, □ is 6 in this routine R3.
The tone data in the ROM 20 is assigned to each channel of the WG 25 based on the created 1.-enric file 62.

That is, in the ROM 20, as shown in FIG. 4, an interval table 63.1, a Hoene lever index table 6/I, and a tone data panchromatic recorder 5 are provided in advance. Then, the sound resistance table 63 shows the interval 111, which is set as J: on the lever, and the volume coefficient corresponding to "3". C note interval settings) are stored in advance, and 1 to
- tone data bank 6 Fi has multiple tone data, J
-/7wt)...1・-tone data 1-1, tone data i, l~-tone f-ta 111, tone data 1+
2... is written ↑1h\, and the 1 to -n lever index table fi 4 has each of the 1 to -n levers 1
The at 1 pointer of the tone data for forming 41'4 (r (color)) corresponding to 6 is stored. In this case, the example shown in the figure will be explained. ,
]・- Corresponding to tone lever 1 ゛Tone (8 colors) is 1--
data i-1, and therefore 1 to
-1 to (memory J rear) 64a corresponds to tone lever 1 of tone lever index table 67I. Each starting address, that is, address A, address A, and address B are memorized, and
~-n is 1・-n)''-T i + 2 is composed of JS,
Therefore, the address D is stored in the slot 1-64b, and the +--n corresponding to the tone lever 3 is composed of 1-hung data i, 1-1-1, and therefore the address B and address C are stored in the slot 64c. is memorized.

In this embodiment, the odor manufacturer has set the number of pieces of 1-tone data constituting the tone corresponding to each tone lever to two at most, but it is possible to have a plurality of pieces, and there is no need to limit the number to two at most.

Then, the program executes this tone lever processing routine [
<3 (Figure 51 shows this routine 1<3 Norochi 11-
NTS60 in register 22.
The volume information of the tone lever 1 stored in (FIG. 4) is read into the register group 50 of the calculation section 15. However, in this case, since the volume is [01], no processing is performed. Then, the blind h1 information of lever 2 is read into register group 5)0. In this case, famous name 1
-3.1 is specified. Therefore, first, the address pointer (-j, address D) in the slot 64b of the 1~-n lever index table 64 is written into the 1 rear 62C of the 1-link file 62.
Then, the sound corresponding to sound B [3-l in the volume table 63 has a coefficient r 1111111-1].
c (see Figure 4). Next, tone lever 3
volume information is read into the register group 50.

In this case, the volume r2J is specified, so
First, the first address pointer (address 13 in blocks 1 to 64C of table 6/l) is written to the tone riff [st file 620■ rear 62d, and then the volume [Volume coefficient corresponding to 21 (lQ10
0000.1) is written into the rear 62d, then the second address pointer (i.e., address C) in slot 64b is written into area 62e, and then the second address pointer (i.e. address C) in slot 64b is written into area 62e, which corresponds to tone 1tl12J. Volume coefficient ([0100000-
1) is written in the T rear 62e. In this way, the W5 il information of each tone lever in the NTS 60 is sequentially read and processed. And finally, Tone Riku■
The number of lζ address pointers written in the tone request file 62, that is, the number of tone data recorded in the tone request file 62, is the same as the tone request file 6.
2 header (ie, 1. area 62a), and the creation of tone resource 1-file 62 is completed. 1. After the creation of the program 62 is completed, the contents of N T 86.0 are transferred into the OT S 61, and the program exits from this routine R3.

In this electronic organ, a tone request file 62 as shown in FIG. 4 is created in this routine R3. In this case, each tone lever corresponds only to the address pointer of the tone lever index table 64, so by changing the address pointer of this table 64, the desired 1-1 data (tone) can be assigned to each tone lever. can be made to correspond.

In addition, in this tone request file 62, the area 62b contains tone additions common to this file 62.
Nodame information, such as frequency, vibrato depth, decay length, etc., is stored in the Hibbler field. In other words, although a detailed explanation will be omitted, information for these tone processing is stored in the ROM 20 in advance, and the tone processing information is read out from the ROM 20 according to the operating position of the tone processing lever and is read out from the file 62. By registering with WG
It is possible to perform timbre processing on the Rakuhata signals formed in each of the 25 channels.

By the way, -[the above-mentioned 1 to -n request file 62
In the process of creation, the number of address pointers written in the header 62a is usually detected by one address pointer in one noister 22.
A tone request counter is provided, and this tone request counter is incremented every time the address pointer is written into the file 62, and finally the tone request counter is incremented by referring to the result of this tone riff 1 [strike counter. Also, N in one culm
Sequential reading of the contents of the tone lever index table 64, sequential reading of address pointers in each slot of the tone lever index table 64, sequential loading of each area in the tone request file 62, etc. are normally supported by J. Set a pointer, advance the contents of this pointer each time one process is completed,
It is executed based on the contents of this pointer.

For example, when writing the address pointer to the tone request file 62, first set the tone request file pointer to the address (address F) of the T rear 62G, and then write the tone request pointer to the tone request file pointer. Then, the contents of the tone refnis i pointer are advanced to the entry address (address 1;) of the area 62d, and the contents of the tone refnis i pointer are advanced to the entry address (address 1;) of the area 62d based on this entry address (address [).
This is done as follows:

However, these treatments are naturally performed in this industry, and therefore, in this specification, -C omits the description of these treatment steps.

(5) Key on/off detection routine I2 In this interrupt processing routine ■2, the interrupt signal INTFR1 is generated at intervals of several m5ec 4+-? Since it is executed every time the interrupt signal INTER1 is generated, it detects the A/A off state of each key switch of the keyboard circuit 11 at the time when the interrupt signal INTER1 is generated. When the interrupt signal>;TN1'FR1 is generated in the control circuit 16, a switch address signal is supplied to the address de-der 34, and based on this switch address signal, the A/A of the key switch is activated.
The keyboard status information is read into the register 22 via the bus driver 35 and the data bus 30, and is stored in the register 22 as shown in FIG. (abbreviation) 70 was completed.

This figure shows JN K S 70 J3, II I
II means that the key corresponding to this “1” is the interrupt signal I.
Indicates that it is pressed down at the time of NTER1 firing.
I'm at No. In other words, this example indicates that the keys corresponding to the C note and F note of the 1st A octave, the DI note of the 2nd octave, the F8 note of the 13th octave, and the A note of the 4th A octave are currently being pressed. I'm at No.

In addition, in this figure, the unmarked indicates II OII.

(6) When the pressed key position/change detection routine R41 to -n lever processing routine R3 is completed, the program proceeds to the next routine R4. It detects the state of NKS70 at the time of execution and whether it is y+!.The contents of NKS70 are shown in Figure 0 (old keyboard status error
The above detection is performed by comparing the contents of 0] (hereinafter abbreviated as S) 71. In this case, 0K871 indicates the state of the key switch at the time when step 4 of this routine was executed last time, and is created in routine 6, which will be described later. Then, execute this routine R4 1
) If the result is rY[sl (changed), the program proceeds to routine R5, and if the result is 1-NO, + (imaging is done), the routine returns to routine R2.

(7) Key-on request file creation routine R5 This routine R5 detects a new 1-key key to generate a musical tone, in other words, a newly pressed 4-knee, and based on this detection result, as shown in FIG. ′? 14--A unrecoup L list file (hereinafter abbreviated as ON/[<0) 72 is RA
This is 1) created on M21.

In this routine [5], first exclusive OR is taken between each pin i of OK S 71 and each corresponding pin 1~ of NKS 70 (n K S N
K.S.). As a result, only the bit corresponding to the 1-switch whose state has changed becomes 1''. Next, an AND operation is performed between the result and each bit of the NKS 70.

(N K S△((') K S■NKS)). As a result, when the key switch is newly turned on, only the key switch becomes 1'''.Finally, the result of the above AND operation and the ON
-A is taken between each pin 1 of RQ 72, and the result is newly written to 0N-RQ 72.

ON -ItQ=ON -110V (NKS△(0
5 (1) NKS)) - (1) Here, the last or performance n
About the pleasure of - C1 Pi1 Akira Juru. This electronic organ was later used in the ON RQ created here in the M;
Based on 72, the process of assigning the keys that should generate musical sounds to each channel A7 of WG 25 is executed, and when this assignment process is completed, the "1" pit of ON-RQ 72 is sequentially erased. By the way, at the time this routine 5 is executed, the ``1'' bits written in 0N-RQ72 when the previous routine R5 was executed may not have all been erased. There may be cases where there are "1" bits left to the power of 1. The final OR operation is performed to leave the unprocessed II II bits on 0N-RQ72: b. In FIG. 6, the circle marked on the first octave C note indicates this processing bit.

(8) Routine 1<6 in the key-off request file creation routine R detects a key that should stop musical tone generation, that is, a locked key, and based on this detection result, issues a key-off request as shown in FIG. file (hereinafter 0
73 (abbreviated as -.RQ) is created in the RAM 21.

In this routine R6, first, as in routine R5, ON - RQ = OF - RQV (NKSA (OK
S*NKS)) - The operation (2) is made <', and the result of this operation is written into the OF-RQ 73. Note that in this equation, NKS means the inversion of each bit of NKS70.

Furthermore, the meaning of the OR operation is the same as in routine R5. Next, the contents of NKS70 are written into 0KS71.

That is, by this processing, the table used as NKS this time will be used as 0KS71 in the next processing of routines R4 to R6.

(9) Key-on channel assignment routine R
7 This routine R7 is the 0 created in routine R5.
Based on the N-RQ 72 and the tone request file 62 created in routine R3, processing is executed to allocate frequency data and tone data corresponding to a newly pressed key to an empty channel of the WG 25.

The execution process of this routine R7 will be explained below with reference to FIGS. 7 to 9. In addition, 0N-RQ72 in FIG.
is the same as 0N-RQ72 in FIG.

When the program enters this routine R7, it first proceeds to step S1 shown in FIG.
Bit detection is performed. This detection is 0N-RQ7
2, first shift the slot corresponding to the first octave to the left (in Fig. 7) by 1 bit, then shift the slot corresponding to the second octave to the left by 1 pit, and then This is done by sequentially shifting and covering the slots corresponding to the octave to the left.
When the "1" bit is detected (step 82), the program proceeds to step s3. In the example shown in FIG. 7, the "1" bit of the first octave C note is detected first, so At this point, the program proceeds to step s3. In step S3, frequency data corresponding to the first octave C note is successively output from the frequency table stored in the ROM 20, and the frequency data area 75 in the register 22 ( RAM2.
The entry address (address X) of the slot 76a corresponding to the first octave/C note of the busy key table 76 prepared in ) is register 22
-n;y is stored within. 2r, the busy key table 76 is prepared in advance in the RAM 21, and has 48 slots 1-76 installed corresponding to each slot.
It consists of 8,76b176G... next,
Proceeding to step s5, an empty area in the channel alignment table (abbreviated as 1st lower CAT) 77 is detected. Here, CAT77 will be explained.

This (DCAT77 is prepared in advance in the RAM 21 and consists of 15 rears of IEI, E2・= −E +s, and these 1 rears F1, E2・
...Els are three slots a1, bl, CL a2, t)2, c2, . . . each consisting of 16 bits 1-.
It is composed of... This CAT77 is the current 71
This table shows which channel the musical tone being sounded (including the musical tone in the decay state) is assigned to.As explained below, when the musical tone corresponding to a certain key is assigned, each T rear 1, “2...1
-15 headers, 1 or thrower (~81, a2, a
Corresponding to 3...: 1 knee is displayed, J-1 to RIAD1 nos of the quick key table 76 are recorded as σ, and slots b1, CI, steps 1-b2, C2...
. . , so that the f+ channels used are recorded. In this case, each pin 1 to slot b and c corresponds to the 32 channels of WG25. and
Furthermore, the beep corresponding to the channel to which the pronunciation is assigned]
“1” is recorded in (1).

Now, the program advances to step S5 and the empty area is detected by detecting the rear header of each of C△1-77.
-Rear[-2 is empty-"If it is detected at rear doji and I, 2, then J rear [2's
) is 31 in register 22! It is then stored and the process proceeds to step S6. In step S6, the register 22 contains the RQ H-Rane-C.
The number of "(1" ti Mitsu-) in 8 is excluded.(-
The system status register 78 has 32 registers, each corresponding to 32 1 tunnels, and 1i', t' for each fv channel in use.
"1" is recorded as 0 in Juru Pi 1~ (there,, 1...
7 and is locked out in this step S6 "0"
The number of Pi is the current number of empty tunnels plus 1 snow]
Ru. The number of blanks (the number of empty tunnels) is 0 in the Stub S6.
When it is released, the program proceeds to step S7, and the number of locked out "0'° pips 1~ and 1~-en-requests" are determined.
The number of tone data recorded in the hef7 file 62 (see Figure 1).
) stored in the header 62a of the file 62. In this case, the number of "0" bits is 1--
Number of data J: Crowd: Squid or Snowy Dorirot
YES), BU[-1 GRA 11 advances to S°L-SUB S8 (
Do 1. Step S8 is to search for the "0" bit in the register 78.
, l'1-, '3(i-empty') The fv channel number of the F tunnel is detected. In the example of FIG.
``'' is searched, thereby detecting that the second channel is an empty channel.

Note that in the busy status register 78, the slots 78a slots 11 to 16th pits correspond to the first to first (3rd) pits, respectively.
It corresponds to 1 non-nel, and also supports 1-1 [~78b].
The 1st to 16th bits correspond to the 17th to 32nd channels, respectively. When an empty channel of the second channel is detected, the program proceeds to step S9, and the channel number [2] is stored in the channel register 79. Next, when proceeding to step S10, 1
・-Nrikuni's (-ROM based on Noisle 62)
2 '(inside 1) ~-n data is 1- in register 22
- data is transferred to J rear 80. In other words, to explain the example of FIG. Tone data i +2 is read out and tone data area 8
Transferred to 〇. Next, the 74 coefficients (sound in the rear 02C) are transferred to the rear 80.

Then, the program proceeds to step S11.
- Modification (timbre processing) of the tone data is performed. 7 This modification of tone data is performed based on the information for tone processing stored in the T rear 62b of the file 621), so this modification includes Jζ F1 color weighting (for example, vibrato (+th hn )) is applied to the retone data.
[Proceed to step 812.] Step S12
Then, the channel number of the empty channel 11 stored in the channel 1 register 79 > 3 (in this case, r2J)
Based on this, the addresses of I-1 to I-2 in the area corresponding to the second channel of data board 1-18 (FIG. 2) are excluded. Next, when proceeding to step 513 (FIG. 9), the frequency data "O" and "1" in the frequency data J rear 70 are
- The tone data and tone coefficients in the tone data box 80 are output to the corresponding area of the data board 1-18 based on the tone data address. Next, when proceeding to step S1/I, the second channel of the 32-bit star 17 command register 81 provided in the register 22 corresponds to the
1" is set in the second bit 1~) of 81H, and then the contents of this start command register 81 are written to data board 1.
Transferred to 18. In this way, data port 18
Frequency data transferred to 1 h f-ta, pitch 81
The cloak is supplied to the corresponding channel (2nd channel) of W G 25, to which the corresponding channel (2nd channel 11) of W G 25 is started. 1, a musical tone signal is formed based on the frequency data, tone data, etc. supplied from the data port 1E1 in the second channel.

Next, the program proceeds to step S15, where the channel register "2-1" stored in the channel register 79 and located in C is
Based on the area [
2. Write "1" into the second pits 1 to 1 of slot b2 in slot b2. (Note that the second bit of this slot b2 corresponds to the second channel.) Next, the process proceeds to step 816, and the block 1/channel in the channel register field 9? I month r2
1 (“1” is written to the second bit of slot 78F1 of busy status register 78. A1)
-(, Proceed to step S17.

In step 317, it is determined whether all C tone data recorded in file 62 have been assigned channels. In this case, ■Rear 6
Since only the tone data recorded in 2C (FIG. 4) has been allocated, the determination result is rNOj, l, and therefore P1]gram returns to step S8.

Then, the process of steps S8 to 816 described above is
B is repeated. J, that is, empty chi 1 in step S8.
The fourth channel is detected as the seventh channel, and step S
In step S9, the channel number 14j is stored in the channel register 79, and in step S10, tone data 1 is read out from the tone data panchromator 5 based on the address B stored in the 1-on request file 620J rear 62d. The volume coefficient in the rear 62d is transferred to the tone data area 80, the tone data is modified in step 811, and the tone data corresponds to the fourth channel of the data port 18 in step S12. In step S13, the frequency data in the frequency data area 75, the 1-in data in the rear 80, and the volume coefficient are output to the data port 18, and in step S14, “1” is set in the bit corresponding to the fourth channel of the star 17 command register 81, which causes the fourth channel of the wG25
The channel is started, and in step S15.816, II I 11 is written to the fourth bit of slot b of CAT 77 and the fourth bit of slot 78a of busy status register 78, and in step S15.816
Proceed to.

In step 8.17, it is again determined whether the allocation of all tone data has been completed, but in this case, the corresponding tone data is still allocated to the address C stored in the area 62e of the tone request file 62. The result is 1NO for the C1 size advance payout that has not been completed, so the program returns to step S8 again and returns to step S8.
The steps 816 to 816 are executed again. When the steps 88 to 816 are executed, the 1-tone data i41 corresponding to the address C stored in the 1 rear 62e of the tone reef coast file 62 is assigned to the fifth channel, and the W G 25 The 51st 1st/Nel of 1 star ~, and (E A T-77's star)
-1) 2 and 78a of the busy status register 78 (7) 5th bit] are written with numbers II I 11, respectively.

In this way, the channel registration of the C1 first A section and OB is completed, and the GJ1 channel is output from the speaker 29.

Three types of musical tones are simultaneously produced at the pitch of the C note of one octave and having tones corresponding to tone data i, tone data 11-1, and tone data i+2, respectively. Also,
At this point, the second, fourth, and fifth registers of the busy status register 78 and the start command register 81, .
Corresponding to the file, 16 bits each have 0 recorded as ``1'',
Roughly speaking, 3 II I 11 is recorded as 0 in the bits corresponding to the second, fourth, and fifth channels of area E-2 of CAT 77.

The C1 program then proceeds to step S17, but the judgment result at this step is naturally "Y" and "S".
Therefore, the program proceeds to step 818. In this step 818, the entry address (address
It is written in the header of the area E2 of T77 (in other words, ``1st a2''). Next, when the process proceeds to step S19, the area E2 address (address Y) of T77 is written.
is put into the slot 76a of the busy key table 76. Then, the process proceeds to step S20, and 0N-
The J1 bit corresponding to the first octave/C note of RQ72 is set to it O++. Thus, all assignment processing based on the -C1 first octave/C note is completed.

Next, the program returns to step S1 again and 0N-R
Q721- is detected at "'1" pin 1. In this case, in the example shown in FIG.
In the 1st case, the SJIIb-'J1 bit is detected (
Step S2), l, Therefore, J[1 gram proceeds to step S3, and the assignment process is performed in exactly the same way as in the case of () described below.Thus, the assignment process of the second A-cube/D# note is performed. Once completed, the detection of ON・RQ721-'s "1" beep] is carried out again, and the next detected "1" beep]
The assignment process corresponding to ~ (3rd-.4th qutave - sound) is repeated. In this way, ON・RQ 72F “1”
When all the current processing is completed, the judgment result in step S2 becomes a: t;tr NO, 1, and all processing in routine 1 tare is completed.

Next, step 821 shown in FIG. 8 will be explained. In the above description, the judgment result in step S7 is assumed to be rYFsl, and the -C explanation is advanced; however, this may also be the case when rNO,l[i. 1" 1.1 That is, the number of digits is 1 to 7) in 62 4/
If the number is smaller than the number recorded in the I-der 62a, in other words, even if it is desired to allocate 1 to -n data to a channel, the number of empty channels is too small to allocate it, the determination result of step S7 is rN. O-1, the program proceeds to step 821. In this step S21, f-t of the butunnel in the decay state is
1]- to the dump command register 85 (see FIG. 10), which will be described later, and then output the contents of the dump command register 85 to the data boards 1 to 18. Forcibly stop the channel 17 in the state 1: Avoid. and,
Exit routine R7. In this way, if the process is set to 1, the corresponding it 1 ++ pin 1 ~ of the busy status register 78 will be set to ``0'' in the WG end processing routine I3.
This increases the number of empty channels and makes it possible to allocate tone j'-even. B1. The meaning of this process is to give priority to the generation of the musical tone corresponding to the newly pressed key over the generation of the musical tone in the decay state. Well, in order to perform this process, 1iQi is stored in the register 22 and Iζ - decay time dit'
Nel'? ! 1''; f OK status register 82 is used to store S.

Next, the 6th bits 1 to 2 of CAT77
-C explanation for "1'' (marked with a circle).

This 6th bit] ~ 1''' is not assigned to the current pressing of the 1st AC/C sound key, but is assigned when the same key was pressed last time. In other words, when the ↓- button that was pressed last time is released: 1
Each block assigned a knee]? When the musical tone signal generation stops after a predetermined decay time in the channel (1), this musical high signal generation/l is not necessarily stopped at the same time for each channel), and when the musical tone signal generation stops.゛1'' in 0△1-77 corresponding to I7 channel (・ is II O11
However, if the D9 time of a certain assigned channel is long, the previous musical tone signal may be generated until the same key is pressed this time in the corresponding tunnel (Continuation, G-1 may remain. In this case, When the same key is pressed again, the busy 1 table 76's thrower h 76 a GJ is the CAT 77's area E 2's 1-in i relay address (
Address Y) is registered, and musical tone iAg is generated in area F2, and 111 II is entered in the hit (6th bit of slot b2) corresponding to the Boo 1 synnel with the consecutive number.
remains. Therefore, the channel assignment for the 10 key pressed this time is recorded as 0 in area 2, and furthermore, the 6th bit "1'' of thrower]-b2 is also left as is in II'il T rear F2. (Note: Regarding the processing when a musical tone signal is generated, please refer to the interrupt processing routine (3) later.) In this embodiment, each tone in the request file 62 is I gave Haku Data a 1 star star on his channel, but
It is also possible to start all the blocks at the same time.

(10) 4=-Off Chi 1 Synnel Management 1 ~ Routine R8 This routine R8 is based on the OF-RQ 73 d3 created in routine R6 and the busy key table 76 and CAT77 created in routine R7. , the musical tone corresponding to the released key (the key whose pressed state is released) is removed from W1. The execution process of this routine R6 will be explained below with reference to FIGS. 10 and 11. <', 0F-RQ73 in FIG. 10 is the same as OF-RQ73 in FIG. 6.

When the program enters this Runitin R8, it first proceeds to step S1 shown in FIG.
4r, this detection is performed in exactly the same way as the detection of the "1" bit of the ON-RQ 72 bit (step 81 in FIG. 8) described above.

Therefore, in the example shown in FIG.
2), B [1 gram proceeds to step S3. In step S3, the position of the detected 111 TT bit (O
Based on the position of F-RQ 730), an entry address (referred to as address V) of ST 76m corresponding to the first octave A' note of the busy 4 table 76 is generated.

Next, when proceeding to step S4, the thrower l-76m is
The contents of are read and transferred into register group 50. In this case, the content of slot 76m is the first octave A.
If the channel assignment for the 11 sound is registered in area [n of CAT77, this is the J entry address (address ()) of area [n.Next, when proceeding to step S5, the contents of slot 76m Based on (address U), the contents of thrower l-b n and cn of rear FE n are read out, and the decay command register 8
It is loaded into either the 4th or 1 dump command register 85.

Note that which one is loaded is controlled by a changeover switch provided in the operating section of this electronic organ. Then, when the process proceeds to step S6, the contents of the register (84 or 85) into which the contents of rear Fn have been loaded in step S5 are output to data ports 1 to 18, thereby corresponding to the first octave A' note. The generation of musical tone signals of the channels to which musical tone generation is assigned (in the example shown in FIG. 10, the first, seventh, and eighth channels) is stopped. In this case, if the decay command register 8/I is loaded in the step 85, the musical tone is gradually changed to H' as it decays, and if it is loaded to the dump command register 85, The musical sound is deleted immediately. Next, proceed to step S7,
OF-RQ 73, )-(1) 1st octave A
The "1" hit 1~ of the l sound is removed from W1, and the process returns to step 81.
Return to Then, when the "1" bit of the third octave F note is detected in step S1, the determination result in step S2 becomes "rYES", and the steps 83 to S6 are executed in the same way as in the case described above, and the third A Kutave
The musical tone signal of the channel to which note F is assigned stops J1
or decay state. Then, in step S7, the "1" bit of the third AC section/F note is erased, and the process returns to step S1 again. In this way, O
When the processing of all the "1" bits of F- and RQ 730 is completed, the judgment result at step 82 becomes "NO", and the processing of routine R8 ends.

(11) WG end tIL filling routine I3 This interrupt processing routine 13 is executed when the generation of musical tone signals to the channels of WG 25 has completely stopped (when the decay state has ended> W G 2 F) Occurs from the overlapping interruption Q
It is executed based on TN'1IR3', Part 1
．． Yokamotojijisu 1ex register 78 (Fig. 7,
12) corresponding to the channel in question.
(-) 11, and set J to this, leaving the same Brenner as empty channel 17, and assigning (!) the generation of the musical tone corresponding to 4 to another key.

-d'/>Straw, in response to one pressed key,
Musical sound signals generated in multiple channels (three channels in the example of FIGS. 4 and 7 mentioned above) do not necessarily stop at the same timing; for example, in the case of percussive sounds, Sometimes it will stop even though a key is pressed. In such a case, the musical tone generation 11 will be stopped until all musical tone signals of other channels corresponding to the same key have reached = 51- cases +L-d. When υ'tJ is used, the 'A+ rate of using ChitI channel becomes very bad (7ru.This electric T-Z
Le sword (31, considering this > r sada 8, Gakuon Bon / 1 released tJP + N, tab A Neru to 141 seats) - l'lruJ, u(ko, ( - interrupt processing routine 1
3 is 1 (lG-Jτ).

Please refer to FIGS. 12 and 13 below."] Regarding the execution process of this A11-inclusive processing routine I3, It is also assumed that the musical tone signal is generated in case 1] and that this 7th tunnel is recorded in 1-rear F6 of CA 1''77.

In the 7th channel, the sound/1 of the music signal wing stops I-, and this causes W G 25 or I) interrupt I(', j'j
When IN-rFR3/I\ occurs, the program first proceeds to step S1 shown in FIG. 133. Soshi-
(, In this step 81, the seventh bit (seventh block I
7 channel, 1, t1,) is set as ll OII, and then proceed to step S2, f-i Jru1, this step S
2 J3 and the next slap 83 (cA=52-T) emulate the 7'ft7th channel recorded in 77, specifically the thrower h corresponding to Eliatoro's 7th 1st channel. b 6th 7th bit 1~11111
It is for erasing. The reason why it does not work if this process is performed in case 1) is as follows.

For example, in the 7th channel, the musical tone signal Y (which was 1) is a percussive musical tone signal, and when the generation of the musical tone signal is stopped, the 1 = - (initial Assume that the key ?l) is still pressed down.Then, when the same musical tone signal is received, the key corresponding to the seventh channel of is set to 0'' (step S1), the Raku? In this case, if the above process is performed, when the first key is decremented by 1, the CAT77 corresponding to the first key is For example, if the contents of the area
Furthermore, the contents of this command register 84 are output to data ports 1 to 18, and the corresponding (''-t't(r) generation) is assigned to the next key. This also causes the 7th channel that is in the process to transition to the decay state.To eliminate this inconvenience, the processing in steps S28 and S3 becomes necessary.

Now, the program advances to step S2.
The header (S1]tsul-al) of area F1 of 7 is '
0”. In this case, for example, r
If NOJ ("0" means "1"), the program advances to step S3. In step S3, first, "between each bit of rear
- The logic A N +) is taken, and this arithmetic unity is then stored in slot 1) 1, C1. As a result, f1
If there is a pass 1''' in the 7th bit 1 of Tsu l-b 1, that II 111 will be deleted.
Then, there is 1" in the 7th bits 1 to 6 of the rear 1-6, so there is no '1' in the 7th bit of the area [6 of the area [6]. .Therefore, the above A N
The binding of the 11 Enfeng is the same as the content of the 2[Rear[1] in front of the Enshin.When the execution of Step S3 is completed, the process proceeds to Suit Tsubu S4. In step S4, it is determined whether the contents of area 1 (contents of area 1-bl, ci) are all "0". In this case, ■ ii 1 ++ remains in the rear FI, so the judgment result is r N Ol, and pu[1
The program proceeds to step S6. In this step 86, the process carried out in step S3 described in 1 is performed when the header is 0''.
In all areas ([1 to E+s) that are not, it is judged whether or not (2 has been performed.) In this case, since only areas 1-31 have been processed, the judgment result is I N 0.1
So, I reluctantly ran the program again at step S2.
Return to In step S2, it is determined whether or not the header (s[l-a2) of area [2] is "0".

In this case, if the header is “0” (1-YESI)
, the program proceeds to step S6. This step S
The judgment result in step 6 is +, &rN0.1, and the program proceeds to step S2, where the header of rear F3 is examined. In this way, 1) 'l river,] 32,
...... each area is investigated one after another, and Stella/
83 processing is done, and Stella/S2 smell (21
Assume that the header (S[ ] l-s 6 ) of the rear S6 is examined. In this case, the determination result in step S2 is r NO OJ, and the process proceeds to step S3. and,
In this step 83, the busy status register 7
The contents of 8 [Rear [: Thrower of 6], b6, and the contents of C6 are immediately ANDed.
The seventh bit '1' of 6 is erased (set to '0'). Next, when the process advances to step S4, it is determined whether the contents of slot [)6 and G6 of ]-Rear 1 = 6 are all "0°°", and in this case, there is still 1" remaining. When the program is read, the program proceeds to step S6. In this way, the processing for all 1 rear F1 to Els is completed, and the block [1 gram] immediately exits the routine 13 from this interrupt process.

Next, for example, when the 8th and 17th channels are finally over (1), the 8th channel of J and Tako is recorded on the CAT77's J rear F71, and furthermore, the decay of the musical tone signal that was generated in this 8th channel is recorded. A case where the time is relatively long will be explained.

An interrupt signal INTER3 is generated, and the eighth bit (corresponding to the eighth channel) 111 II of the block [slower of the busy status register 78] to 78a is erased when one gram advances to step S1. Next, after areas [1 to F6 are processed in the same manner as in the case described above, in step S3, 1 rear [7 thrower l-b 7
``1'' of ``Pitsu'' is erased, and the process proceeds to step S4.Here, since the decay time of the musical tone signal of the 8th channel was relatively long, when the 8th channel was finished, the ``1'' of the rear F7 was deleted. Assume that all the '1'' bits 1 through 1 have been erased. In this case, by executing step S3, the determination result in step S4 becomes rYEsI, and the program proceeds to step S5.
5, first, the busy key table 76 (see Fig. 10) stored in the header of the J rear F7 is
Based on the rear address (based on The binding in the binding key table is broken.This process releases area "7" to another key (c).

This concludes the explanation of this electronic organ, but for reference, the following information is provided: ROM 2n, RAM 21,
The contents of the register 22 are not shown together in FIG.

Note 1. In the above embodiment, the present invention is applied to an electronic organ, but it can of course be applied to other electronic musical instruments. Furthermore, in the explanation of 10M, the number of channels is set at 32, but this number can be increased or decreased according to necessity.

〔Effect of the invention〕

As explained above, according to the present invention, J
, so that each channel can be used effectively and musical tones having an ensemble performance effect can be easily generated. Also, when obtaining this ensemble performance effect, two J-Eve generators (Raku?
There is no need to provide a plurality of parallel generators (1 generation means), and therefore the overall configuration of the electronic musical instrument is simplified.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a schematic configuration of a conventional digital electric T'A organ, and FIGS. 2 to 14 are diagrams for explaining an electronic organ according to an embodiment of the present invention. Figure 3 shows the overall configuration, Figure 3 (a) is a flowchart showing the flow of the program, Figure 3 (b) shows the interrupt processing routine, and Figure 4 shows the tone lever processing shown in Figure 3. ROM20 involved when executing routine R3
, a diagram showing the storage contents of the RAM 21 and the register 22, fifth
The figure is a flowchart of the above routine R3, and FIG.
Key-on request file creation routine R5, key-off request file creation routine R6 shown in the figure
FIG. 7 is a diagram showing the memory contents of the RAM 21 and registers 22 involved during the execution of the key-on channel assignment 1 to routine R7 shown in FIG. The contents are shown in Fig. 1, Fig. 8, Fig. 9, number, eye (routine R7 written in 1).
n-J yard, Figure 10 is Mi1-A7 shown in Figure 3.
[B]Inner Management[・A diagram showing the contents of the RAM 21 and registers 22 related to the execution of routine 1<8, FIG. 11 is 71-1-dito=1
Figure 12 shows the WG termination processing routine shown in Figure 3.
RAM 21 and register 2 that are relevant when executing 3.
Figure 13 is a diagram showing the contents of 2.
]-ditno1・, Figure 1/I is ROM2O, RAM2
1 is a diagram showing the stored contents of register 22 and data boards 1 to 18. 11...Keyboard circuit, 18...Data port 1~(storage means), 19...Front control unit, 2
5...Waveji ■Nerator, 39...
・Keyboard 4 knees. Applicant Kuchiki Raku i! ! iIl! ! Started by J Zo Co., Ltd. Anti-fake T-iT2 Type 1 (H Type) Mr. Commissioner of the Patent Office
61731 1. Indication of the case 1986 Patent Temple No. 17599.1 2. Title of the invention (membrane electronic musical instrument 3. Person making the amendment

Claims (1)

[Claims] (a) A keyboard having a plurality of keys; (b) A musical tone having a plurality of musical tone generation channels that generate musical tone signals corresponding to each given key based on data corresponding to the key. (c) a plurality of storage areas provided corresponding to the plurality of musical tone generation channels and each storing data corresponding to the key, the data stored in each storage area being stored in a corresponding manner; (d) assigning each key operated on the keyboard to one of the plurality of musical tone generation channels;
(e) an allocation means for writing data corresponding to the key assigned to the assigned musical tone generation channel into a storage area of the storage means corresponding to the assigned musical tone generation channel in response to the assignment; and (e) the assignment means a first control unit that controls to assign the same operated key to at least two of the plurality of musical tone generation channels;
(f) said at least two keys to which said same key is assigned;
An electronic musical instrument comprising: second control means for controlling generation of different musical tone signals from each of the two musical tone generating channels.