JPH0429077B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a musical tone signal generating device used in electronic musical instruments and other musical tone generating devices, and in particular,
The present invention relates to a musical tone signal generating device in which musical tone elements such as timbre change sequentially at each musical tone generation timing. [Prior Art] Japanese Patent Publication No. 60-4476 discloses that musical tone elements such as the pitch, timbre, volume envelope, etc. of a generated musical tone are randomly changed at each generation timing of a musical tone. In this system, musical tone elements such as pitch, timbre, and volume envelope of generated musical tones are independently controlled in multiple musical tone formation channels, and the pronunciation of the pressed key is assigned according to normal pronunciation assignment logic (i.e., If there is a free channel, it is assigned to an appropriate free channel, and if there is no free channel, it is assigned to the channel that was released the earliest or the channel that has decayed the most according to the truncation process. The relationship between the tone generation order) and the assigned channel is completely random, and as a result, musical tone elements such as the pitch, timbre, volume envelope, etc. of the generated musical tones change randomly at each musical tone generation timing. [Problems to be Solved by the Invention] In the conventional devices as described above, the pitch, timbre, volume envelope, etc. of the generated musical tones can only be changed randomly, and therefore only random performance effects can be obtained. Can not. This invention was made in view of the above points,
Musical sound elements such as the pitch, timbre, volume envelope, etc. of the generated musical sound are sequentially changed at each musical sound generation timing, thereby realizing a pleasant performance effect due to sequential changes, and It is an object of the present invention to provide a musical tone signal generating device in which the order can be arbitrarily set. [Means for Solving the Problems] A musical tone signal generation device according to the present invention includes a plurality of musical tone forming channels each forming a musical tone signal of a pitch corresponding to assigned pitch information, and a plurality of musical tone forming channels. An allocation order setting means for setting an allocation order for any plurality of channels among them, and an instruction for switching channels to be allocated according to the order set by the allocation order setting means at each timing at which musical tones are to be generated. and supplying means for allocating pitch information of musical tones to be generated to the designated channels, and musical tone element control signals for controlling musical tone elements of musical tone signals formed therein to each of the musical tone forming channels. and musical tone element control means for supplying mutually different musical tone element control signals with respect to at least a plurality of channels whose allocation order is set by the allocation order setting means. The outline of this invention is shown in FIG. 1 using a functional block diagram, in which 1 is a musical tone forming means including a plurality of musical tone forming channels CH1 to CHn, 2 is an allocation order setting means, 3 is an allocating means, 4 is musical tone element control means. [Operation] The assignment order setting means 2 sets the assignment order for any plurality of tone forming channels CH1 to CHn. The allocation means 3 switches and instructs channels to be allocated in accordance with the order set by the allocation order setting means 2 at each timing when musical tones are to be generated, and assigns musical tones to be generated for the designated channels. Assign pitch information. For example, channel
When the assignment order setting means 2 sets that the assignments should be made in the order of CH1, CH2, and CH3, the first tone is assigned to channel CH1, the second tone is assigned to channel CH2, and the third tone is assigned to channel CH2. The channel to be assigned to each timing when a musical tone should be generated is CH1, the fourth tone is assigned to CH3, the fourth tone is assigned to channel CH1, etc.
CH2 and CH3 are switched sequentially. The musical tone forming channels CH1 to CHn each form a musical tone signal having a pitch corresponding to the pitch information assigned to each channel. The musical tone elements of the musical tone signals formed in each musical tone forming channel are controlled by musical tone element control signals supplied from the musical tone element control means 4. The tone element control means 4 supplies different tone element control signals to at least the plurality of channels whose allocation order is set by the allocation order setting means 2. Here, musical tone elements refer to elements that determine the characteristics of a musical tone, such as timbre, pitch, and volume envelope. Therefore,
In the plurality of channels whose allocation order is set by the allocation order setting means 2, any one or more of musical tone elements such as timbre, pitch, volume envelope, etc. of the musical tone formed by each channel is different from each other. Pitch information of musical tones to be generated is sequentially allocated to these channels at each musical tone generation timing in accordance with a set allocation order. Therefore, musical tone elements such as the pitch, timbre, and volume envelope of the generated musical tones can be sequentially changed at each musical tone generation timing. [Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 shows a musical tone signal generating device 10 according to the present invention.
This figure shows the hardware configuration of one embodiment, and the musical tone signal generating device 10 of this embodiment includes a CPU (central processing unit) 11, a program ROM (read only memory) 12, and data and working components.
A microcomputer including a RAM (random access memory) 13 controls various operations and processes. Musical tone signal generating device 10 of this embodiment
consists of a modularized sound source module, to which an arbitrary keyboard device 14 and automatic performance device 15, each of which is also modularized, can be connected as appropriate, and a sound system 16 can also be connected. , it has become possible to construct an electronic musical instrument as a whole. The modular keyboard device 14 includes a keyboard with a plurality of keys and a circuit for detecting key presses and key releases on this keyboard, and detects a key-on event (new key press) or a key-off event (new key release). Each time a new key is pressed or released, the key code of the new key and a key-on event signal or key-off event signal are output. The modular automatic performance device 15 outputs key data such as a key code indicating the pitch of the automatic performance sound at the timing when the automatic performance sound is to be generated. The data output from the modular keyboard device 14 and automatic performance device 15 is expressed in the MIDI standard, which is a common standard for musical tone signal processing, and is transmitted via the data bus 17 in the musical tone signal generating device 10. It is taken into the above-mentioned microcomputer. The musical tone signal generating device 10 includes a musical tone forming circuit 18 including a plurality of musical tone forming channels (in this example, 8 channels CH1 to CH8), and includes a key code indicating the pitch of the musical tone to be generated. etc. from the keyboard device 14 or the automatic performance device 15, and allocates the pronunciation of musical tones corresponding to the received key codes to channels in the musical tone forming circuit 18 according to predetermined allocation standards, and performs this allocation. Accordingly, musical tone signals are generated in each musical tone forming channel CH1 to CH8.
The generated musical tone signal is provided to the sound system 16. For each tone forming channel CH1 to CH8, the assigned key code (that is, pitch information)
It is possible to form musical tone signals of respective pitches corresponding to the musical tone signals, and to appropriately control the musical tone elements (timbre, pitch, volume, etc.) of the musical tone signals formed therein according to the musical tone element control signal. It's summery. The musical tone element control signal is a general term for various parameters for musical tone formation or musical tone element control, such as tone setting parameters, pitch change setting parameters, volume envelope waveform setting parameters, and other control envelope waveform setting parameters. Here, we will simply refer to this as a "tone parameter." Therefore, the term "tone parameter" hereinafter does not refer only to tone setting parameters in a narrow sense, but collectively refers to various parameters for musical tone formation or musical tone element control as described above. The data ROM 19 stores in advance various data used for forming musical tones and various data used for processing, and particularly stores the above-mentioned "tone parameters" regarding 64 types of tones. Tone numbers 1 to 64 are assigned to these 64 types of tones, and 64 sets of tone parameters corresponding to each tone are stored in the data ROM 19.
TPMEM(1) to TPMEM(64) are read out according to the timbre number given to the address input. The operation panel unit 20 includes switches and operators for setting and selecting various data and operation modes, and a display 21. Tone setting mode switch TCSET is a switch for selecting a tone setting mode. Tone setting mode is the process of setting tone parameters individually for each channel, the process of setting the assignment order for arbitrary multiple channels,
This mode performs settings such as classifying each channel into multiple groups. The group switch GRP is operated to specify channels to be grouped when configuring settings to classify each channel into a plurality of groups. The alternative assign switch ALT is
When setting the allocation order for any plurality of channels, this operation is used to specify the channels to be allocated in order. In this embodiment, for a plurality of channels for which sequential allocation is specified, the order in which the channels are adjacent becomes the allocation order. Such sequential assignment processing is hereinafter referred to as alternative assignment. The display 21 displays the tone number of the tone parameter set for each channel,
A display showing the setting status of alternative assignment and a display showing the setting status of channel groups are performed. Some examples of display contents on the display 21 are shown in FIGS. 3a to 3f. The channel numbers from CH1 to CH8 are displayed in the upper row, and the tone number (1 to 64) of the tone parameter set for each channel is displayed below each channel number.
A predetermined alternative assignment display "+" is displayed between the tone number displays of channels to which alternate assignment is applied, and the tone number is displayed for channels to which the same tone number is assigned by the group setting process. A predetermined grouping display "←" is displayed instead. The alternative assignment display "+" is set based on the operation of the above-mentioned alternative assignment switch ALT. The grouping display "←" is set based on the operation of the group switch GRP described above. Note that this grouping display "←" is a display indicating that the tone color number of the channel on which this grouping display "←" is displayed is the same as the tone color number of the channel on the left on the display 21. A cursor CSR is displayed on the display 21, and this cursor CSR is moved to a position corresponding to each channel and an intermediate position between each channel (these cursors The position is shown in dotted lines in FIG. 3a). Preset mode switch PSR is a switch for selecting a preset mode. Preset mode means that the tone number set for each channel displayed on the display 21 and the data of the alternative assignment display and group display are stored in the memory circuit as one set of preset data (preset tone parameters). This is the mode for writing to or reading from the memory circuit. The preset light switch PSW is a switch operated when writing one set of data displayed on the display 21 into the memory circuit as preset data. Each of the tone setting mode switch TCSET and preset mode switch PSR is equipped with an LED (light emitting diode).
When TCSET (or PSR) is turned on, the corresponding LED turns on and the other LED turns off, so that it can be switched on and off exclusively. When the LED corresponding to the tone setting mode switch TCSET is lit,
This is the tone setting mode, and when the LED corresponding to the preset mode switch PSR is lit, it is the preset mode. The numeric keypad 22 consists of ten numerical input keys from 0 to 9, and is operated when inputting numerical data such as tone numbers. The operation panel section 20 is further provided with a tone parameter editing operator group 23 and various other tone setting/control switches and operators (for example, an operator for setting the overall volume). The tone parameter editing operator group 23 is for modifying/changing individual elements in the tone parameters (for example, pitch change settings, envelope parameter settings, etc.). Among the processes executed by the microcomputer in the musical tone signal generating device 10, examples of flowcharts of processes related to the present invention are shown in FIGS. 5 to 12. An example of data used in connection with this process and the contents stored in the working RAM 13 is shown in FIG. TSFLG is a tone setting mode flag, which is set to “1” when the tone setting mode switch TCSET is turned on, and the preset mode switch is
It is reset to "0" when PSR is turned on. PSFLG is the preset mode flag,
When the preset mode switch PSR is turned on, it is set to “1” and the tone setting mode switch
It is reset to "0" when TCSET is turned on. CHNO is the cursor channel number,
Indicates the channel number corresponding to the current position of the cursor CSR. TENKY is numeric keypad input data and indicates numerical data input by the numeric keypad 22. NKC is a new key code, which is a key code given from the keyboard device 14 or automatic performance device 15 and indicating a newly pressed key (pitch of a new musical tone to be generated). Furthermore, the key code of a newly released key is also treated as a new key code. TCN(1) to TCN(8) are tone numbers set for each channel. Numbers in parentheses indicate channel numbers. For example, TCN(1) is a timbre number set for channel 1, and specifically, it is any value from 1 to 64. GRP(1) to GRP(8) are group setting data indicating the group setting status of each channel. Numbers in parentheses indicate channel numbers. for example,
GRP(1) is group setting data for channel 1, specifically “1” (group switch
(if grouping is set by GRP) or "0" (if grouping is not set). ALT(1) to ALT(8) are alternative assign setting data indicating the alternative assign setting state of each channel. Numbers in parentheses indicate channel numbers. For example, ALT(1) is the alternative assign setting data for channel 1, specifically "1" (when set as an alternative assign channel by the alternative assign switch ALT) or It is "0" (if it is not set as an alternate assign channel). TPBUF(1) to TPBUF(8) are tone parameter buffers that specifically store tone parameters corresponding to tone numbers TCN(1) to TCN(8) set for each channel. It is something.
Numbers in parentheses indicate channel numbers. for example,
TPBUF(1) indicates a specific tone parameter corresponding to the tone number TCN(1) set for channel 1, and specifically, tone parameters TPMEM(1) to TPMEM(64) in the data ROM 19. Read one or modify it as appropriate using the tone parameter editing operator group 23.
This has been changed. PMEM(0) to PMEM(9) are preset memories. The numbers in parentheses are preset numbers, and 10 sets of preset data are stored. The "assignment table" stores various data necessary for sequential pronunciation assignment processing by alternative assignment and pronunciation assignment processing for each group, and these data include group number data GN, alternative Assignment flags ALFLG(1) to ALFLG(8), intra-group channel number data GCH(1) to GCH(8), alternate assignment channel number data ALGN(1) to
ALGN(8), channel number data by alternate assignment allocation order ACH(1,1)~
It consists of ACH (8,8). Group number data GN indicates the number of groups set by the group setting process. Alternative assignment flag ALFLG(1)~
ALFLG(8) is a flag indicating whether or not to perform alternative assignment for each set group. The numbers in parentheses are group numbers. For example, ALFLG(1) is the alternative assignment flag for group 1, and its contents are "1" if alternate assignment is to be performed for this group, and "0" if not. be. Intra-group channel number data GCH(1)~
GCH(8) indicates the number of the channel belonging to each group. The numbers in parentheses are group numbers. For example, GCH(1) is the intra-group channel number data of group 1, and if the channels belonging to this group are CH1, CH
2, CH3, its contents specifically consist of three channel numbers "1", "2", and "3". Further, if the only channel belonging to this group is CH4, its contents specifically consist of one channel number "4". Alternative assignment channel number data
ALGN(1) to ALGN(8) indicate the number of channels to be sequentially assigned within the group to which alternative assignment is performed. The numbers in parentheses are group numbers. For example, ALGN(1) is the alternate assignment channel number data for group 1, and if this group is a group that performs alternate assignment and the channel
Assuming that four channels, CH3, CH4, CH5, and CH6, are to be allocated in order, the content is specifically "4". Furthermore, in this case, if assignment should be made in order such as CH3→CH4 or CH5→CH6, the content of the alternate assignment channel number data would be "3". Channel number data by alternate assignment allocation order ACH (1, 1) to ACH (8, 8)
indicates the number of the channel corresponding to each allocation order within the group to which alternative assignment is performed. The first number in parentheses is the group number, and the second number indicates the allocation order. for example,
ACH (1, 1) is channel number data with allocation order 1 in group 1, and if this is channel CH3, its content is specifically "3". Also, in the same allocation order
When there are multiple channels such as CH4 and CH5, the respective channel numbers "4" and "5" are shown. Here, the assignment order means, for example, channels CH3, CH4,
Assuming that the three channels CH5 are allocated in order, CH3 is ranked 1st, CH4 is ranked 2nd, and CH5 is ranked 3rd. CGN is the current group number, and indicates the number of the group for which pronunciation assignment processing is currently being performed. CALGN(1) to CALGN(8) are the alternate assignment current orders for each group,
It shows the order in which allocation processing is currently being performed in sequential allocation processing using alternative assignment. The numbers in parentheses are group numbers. For example, CALGN(1) is the alternative assignment current order of group 1, and if it is assumed that assignment processing is currently being performed on a channel with assignment order 3, its content is "3". Areas are provided within the data and working RAM 13 for storing data or signals as described above. Also, data and working
The RAM 13 includes an area for storing key data (key codes, key-on signals, etc., obtained based on the sound generation assignment processing) of musical tones assigned to the musical tone forming channels of the musical tone forming circuit 18, and an operation panel. An area for storing operation detection data of switches, etc., on/off data of LEDs, etc. in the section 20, and other working areas are provided. In addition, in order to enrich the storage of tone parameters and preset data, an external storage device 2 consisting of external RAM, floppy disk unit, etc.
4 (Fig. 2) may be added. To explain the main routine with reference to FIG. 5, first, in key event processing, the keyboard device 1
4 or performs key-on event processing or key-off event processing in accordance with key data given from the automatic performance device 15. That is, when the key code of a new musical tone to be generated is given together with a key-on event signal, key-on event processing is performed and this key code is assigned to a musical tone forming channel. Further, when the key code of the released key is given together with the key-off event signal, key-off event processing is performed to set the channel to which this key code is assigned to the key-off state. A flowchart showing an example of key-on event processing is shown in FIG. In the channel control operator scanning process, the channel control operator (that is, the tone setting mode switch) on the operation panel section 20 is
TCSET, group switch GRP, alternative assignment switch ALT, preset mode switch PSR, preset light switch PSW,
The on/off state of the numeric keypad 22 and cursor key CSRK) is detected and scanned, and when a switch-on event is detected based on this detection scan, predetermined switch-on event processing is performed. Examples of the various switch-on event processes performed here are shown in FIGS. 6 to 10. In the tone parameter editing operator group scanning process, the operation status of the tone parameter editing operator group 23 of the operation panel section 20 is detected and scanned, and based on this detection scanning, the tone parameter buffer TPBUF( 1)～
Performs processing to change or modify the contents of TPBUF(8). When the tone color setting mode switch TCSET is turned on, the TCSET on event process shown in FIG. 6 is performed. Here, set the tone setting mode flag TSFLG to "1" and set the preset mode flag
Reset PSFLG to “0”. Then, the LED corresponding to the tone setting mode switch TCSET is turned on and the LED corresponding to the preset mode switch PSR is turned off to enter the tone setting mode. When the preset mode switch PSR is turned on, the PSR on event process shown in FIG. 7 is performed.
Here, we set the preset mode flag PSELG to "1" and set the tone setting mode flag.
Reset TSFLG to “0”. Then, the LED corresponding to the preset mode switch PSR is turned on, and the LED corresponding to the tone setting mode switch TCSET is turned off, thereby setting the preset mode. When any key switch of the numeric keypad 22 is turned on, the numeric key-on event process shown in FIG. 8 is performed. First, in step 25, the numerical data of the turned-on numeric keypad is converted into numeric keypad input data.
Import as TENKY. In the next step 26, it is checked whether the timbre setting mode flag TSFLG is "1". If step 26 is YES, that is, the tone color setting mode is explained, in step 27 it is checked whether the cursor CSR on the display 21 is at the tone color number setting position (that is, the position corresponding to each channel). If YES, it means that the current numeric key operation was performed to set a tone number, and the process advances to step 28. Step 2
8, set the channel number corresponding to the current cursor CSR position to the cursor channel number.
Import as CHNO. In the next step 29,
Display the tone number corresponding to the position of the cursor CSR on the display 21 using the numeric keypad input data.
Rewrite to TENKY numbers. Next step 3
0 is the tone number of the channel specified by the cursor channel number CHNO (this is
One of TCN(1) to TCN(8), which is
TCN (indicated by CHNO)) is rewritten to the tone number currently displayed on the display 21 corresponding to this channel. In the next step 31, as mentioned above, the tone parameters corresponding to the tone number TCN (CHNO) set this time for the corresponding channel are set as the tone parameters TPMEM(1) to TPMEM(1) stored in advance in the data ROM 19.
Take it out from TPMEM (64) (denote the taken tone parameter as TPMEM {TCN(CHNO)}) and set it as the cursor channel number CHNO.
Store the tone parameter buffer (one of TPBUF(1) to TPBUF(8), indicated by TPBUF(CHNO)) of the channel specified by cursor channel number CHNO
The signal is sent to the musical tone forming channel (indicated by CH (CHNO)) in the musical tone forming circuit 18 (abbreviated as TG in the flowchart) instructed by. The musical tone forming channel CH (CHNO) that receives the transmitted tone parameters stores them as appropriate and controls various musical tone elements according to these tone parameters. To explain the case where step 26 is ON, that is, the preset mode, it is confirmed in step 32 that the preset mode flag PSFLG is "1", and the process goes to step 33. flag
If PSFLG is “0”, go to return. In preset mode, numeric keypad 22 is used to select preset numbers from 0 to 9. In step 33, the preset light switch
Check if PSW is turned on. If it is on, go to step 34, go to preset 34, and write preset data. In step 34, the tone number set for each channel is
TCN(1) to TCN(8), group setting data for each channel GRP(1) to GRP(8), and alternate assignment setting data for each channel ALT(1) to
One set of preset data consisting of ALT(8),
The preset number corresponding to the numerical value of the numeric keypad input data TENKY is written into the preset memory (one of PMEM(0) to PMEM(9), indicated by PMEM(TENKY)). If the preset light switch PSW is turned off, the process goes to step 35 to read out the preset data. In step 35, the preset memory PMEM corresponding to the preset number corresponding to the numerical value of the numeric key input data TENKY is
Read one set of preset data from (TENKY) and assign it to each channel's tone number.
TCN(1) to TCN(8), group setting data for each channel GRP(1) to GRP(8), and alternate assignment setting data for each channel ALT(1) to
Load into register as ALT(8). In the next step 36, based on the tone numbers TCN(1) to TCN(8) of each channel that have just been imported, the tone parameters corresponding to the tone numbers are stored in the data ROM 19.
Tone parameters pre-stored in
Each of TPMEM(1) to TPMEM(64) is extracted and stored in tone parameter buffers TPBUF(1) to TPBUF(8) of each channel, and each tone forming channel CH1 to CH1 of the tone forming circuit 18 is
Send to CH8. Each musical tone forming channel that receives the transmitted tone parameters stores them as appropriate and controls various musical tone elements in accordance with the tone parameters. In the next step 37,
Group setting data for each channel that was just imported
The above-mentioned "assignment table" is created based on GRP(1) to GPR(8) and alternative assignment setting data ALT(1) to ALT(8). The subroutine for creating this "assignment table" is the 12th subroutine.
As shown in the figure. FIG. 12 will be described later. When the group switch GRP is turned on, the 9th
The GRP on event processing shown in the figure is performed. Here, first, in step 38, the tone setting mode flag is set.
Check whether TSFLG is “1”. If YES, that is, the tone setting mode, proceed to the next step 39, but if NO, proceed to return. In step 39, the cursor CSR on the display 21 moves to the group setting position (that is, the position where the grouping display "←" is displayed, that is, each channel). (position corresponding to the number). If YES, proceed to the next step 40, but if NO, proceed to return. In step 40, the channel number corresponding to the current cursor CSR position is taken in as the cursor channel number CHNO. Next step 41
Now, check whether the CHNO you just imported is channel 1. The grouping display "←" set in this GRP on-event processing is an indication that the tone number of the channel on which this grouping display "←" is displayed is the same as the tone number of the channel on the left on the display 21. It is.
However, since channel 1 does not have an adjacent channel on the left, the grouping display "←" has no meaning. Therefore, in order to avoid grouping display "←" for channel 1, if step 41 is YES, go to return, and if NO, go to next step 42. In step 42, the cursor channel number is
Group setting data for the channel specified by CHNO (this is one of GPR(1) to GRP(8))
, and this is indicated by GRP (CHNO)) is set to "1". In the next step 43, the display of the timbre number corresponding to the position of the cursor CSR on the display 21 is rewritten to a grouping display "←". Next, go through step 44 and proceed to step 4.
Go to 5. In step 45, the tone number TCN (CHNO) of the channel specified by the cursor channel number CHNO is subtracted by 1 from this CHNO, and the channel specified by CHNO-1 (that is, the group currently displayed on the display 21) is subtracted by 1 from this CHNO. Set the value to be the same as the tone number TCN (CHNO-1) of the channel to the left of the ``←'' display.
In the next step 46, the contents of the tone parameter buffer TPBUF (CHNO) of the channel for which the group display "←" has been set by this process are
Tone parameter buffer TPBUF (CHNO-1) of the channel to the left on display 21
Make it the same as the content of. Then, change the tone parameter of this tone parameter buffer TPBUF (CHNO) to the cursor channel number CHNO
The signal is sent to the musical tone forming channel CH (CHNO) in the musical tone forming circuit 18 instructed by. In the next step 47, an "assignment table" is created according to the subroutine shown in FIG. In step 44, the cursor channel number is
Find the value CHNO+1 by adding 1 to the value of CHNO,
It is checked whether the group setting data GRP (CHNO+1) of the channel indicated by this value CHNO+1 is "1". That is, on the display 21 of the channel for which the grouping instruction "←" has been set in the current process, it is checked whether the channel to the right has a grouping indication "←". NO.
If so, the process goes to step 45 and the process described above is performed. If YES, the process proceeds to step 48 and then to step 45. In step 48, the channel number CHNO+1 on the display 21 is
The display at the tone color number display position of is changed to the numerical value of the tone color number TCN (CHNO+1) of the channel with number CHNO+1, instead of the grouping display "←". This is because the tone number display of the channel to the left (that is, CHNO) is changed to the grouping display "←", so that CHNO+1
This is because the tone color number of the channel does not match with that channel. Therefore, the display of CHNO+1 is changed to a numerical value indicating the original tone color number instead of the grouping display "←". When the alternative assign switch ALT is turned on, the ALT on event process shown in FIG. 10 is performed. Here, first, in step 49, it is checked whether the timbre setting mode flag TSFLG is "1". If YES, that is, the tone setting mode, proceed to the next step 50, but if NO, proceed to return. In step 50, it is checked whether the cursor CSR on the display 21 is at the alternative assignment setting position (that is, the position where the alternative assignment display "+" is displayed, that is, the middle position between the tone number displays corresponding to each channel number). . If YES, proceed to the next step 51, but NO
If so, go for the return. In step 51, the channel number corresponding to the current cursor CSR position is taken in as the cursor channel number CHNO. It is assumed that the channel number in this case is the channel number to the right of the cursor CSR.
For example, when the cursor CSR is located at an intermediate position between channels CH1 and CH2, the channel number at the cursor position is "2". In step 52, the cursor channel number is
Alternative assignment setting data for the channel specified by CHNO (this is ALT(1)
~One of ALT(8), which is ALT
(indicated by CHNO)) is inverted to “1” or “0”. In other words, the alternate assignment switch
Every time ALT is turned on, the alternate assign setting data is reversed. In the next step 53,
Check whether the alternative assignment setting data ALT (CHNO) of the channel specified by the cursor channel number CHNO is "1", and if it is "1", proceed to step 54 and position the cursor CSR on the display 21. The alternate assignment display “+” will be displayed in response to
If it is "0", the process advances to step 55 and the alternative assignment display "+" at the position of the cursor CSR on the display 21 is erased. In the next step 56, an "assignment table" is created according to the subroutine shown in FIG. By performing the process as described above in response to turning on the group switch GRP or alternative assign switch ALT,
Group setting data for each channel GRP(1)~
The states of GRP(8) and alternative assignment setting data ALT(1) to ALT(8) are established. And these established data GRP(1)~GRP(8),
According to the states of ALT(1) to ALT(8), sequential pronunciation assignment processing (that is, alternative assignment processing) and pronunciation assignment processing for each group are performed. For this sound generation assignment process, an "assignment table" is created according to the subroutine shown in FIG. 12 based on these setting data GRP(1) to GRP(8) and ALT(1) to ALT(8). Then, using the created "assignment table", a sound generation assignment process is performed according to the key-on event process shown in FIG. 11. To explain the assignment table creation subroutine of FIG. 12, first, in step 57, group number data GN is obtained. In this embodiment, the method of grouping depends on the following two criteria. One is to use the grouping display "←" to group multiple channels with the same tone number into the same group, and the other is to use the alternate assignment display "+" to change the assignment order. This is to group multiple configured channels into the same group. Therefore, in step 57, as an example,
Group setting data GRP(1) to GRP(8) and alternative assignment setting data ALT(1) to ALT(8)
Group number data GN is obtained by counting the number of channels whose contents are both "0". In other words, group configuration data GRP(1)
~The channel for which the contents of GRP(8) and alternative assignment setting data ALT(1) to ALT(8) are both “0” is the first channel of each group, so count the number of channels. The number of groups can be determined by In the next step 58, alternative assignment flags ALFLG(1) to ALFLG(8) are determined for each group. Here, for each group, which can be determined as described above, it is checked whether "1" exists in the alternative assignment setting data ALT(1) to ALT(8) of the channels belonging to that group. Accordingly, the flag can be determined. This flag becomes "1" in a group to which alternative assignment is to be performed. In the next step 59, intra-group channel number data GCH(1) to GCH(8) is obtained for each group. Here, the data can be determined by listing the numbers of channels belonging to each group, which can be determined as described above. In the next step 60, alternate assignment channel number data ALGN(1) to ALGN(8) is obtained for each group. Here, the data can be determined by counting the number of channels belonging to each group, which can be determined as described above. In the next step 61, the channel number data ACH by alternative assignment allocation order is
(1, 1) to ACH (8, 8) are obtained for each allocation rank for each group. Here, among each group that can be determined as described above, the alternative assignment flags ALFLG(1) to ALFLG(8)
For groups where GRP(1) to GRP(8) are "0", the channels whose group setting data GRP(1) to GRP(8) are "0" are ranked and their channel numbers are stored. Channels whose group setting data GRP(1) to GRP(8) are "1" are ranked in the same order as the immediately preceding channel.
In other words, a plurality of channels set to be grouped by the group switch GRP are given the same rank in the alternative assignment. To explain the key-on event processing in FIG. 11, first, in step 62, the key code related to the key-on event (that is, the key code to be newly assigned for sound generation) is taken in as a new key code NKC. In the next step 63, the current group number CGN is set to the initial value "1". In the next step 64, the alternative assign flag (this is ALFLG(1) to
One of ALFLG(8), which is ALFLG
(Denoted as CGN)) is “1”.
If it is "1", the process branches to step 69 to perform alternative assignment processing, and if it is not "1", it branches to step 65 to perform normal sound generation assignment processing. In step 65, the current group number
In-group channel number data of the group specified by CGN (this is GCH(1) to GCH(8)
(one of them, and this is indicated by GCH (CGN))
Normal pronunciation assignment processing is performed on the channels within the group specified by. The normal pronunciation assignment process includes a commonly known pronunciation assignment process in which an empty channel is created by truncation processing and a new key code is assigned to the empty channel. In addition, if the channels in the group consist of only one channel,
Even if the previous note is being pressed, its assignment is canceled and a new key code is assigned, which is what is called a last-arrival priority process, so that the new note to be generated will start producing immediately. do. In the next step 66, a new key code NKC and a key-on signal KON are sent to the musical tone forming circuit 18 in correspondence with the channels newly assigned as described above. In this channel in the musical tone forming circuit 18, the given new key chord
The NKC and key-on signal KON are appropriately stored, and based on these, a musical tone signal having a pitch corresponding to the key code is formed. In that case, the various musical tone elements of the musical tone signal formed are controlled by the tone parameters supplied as described above. Further, in this case, if the fore-tone assigned to the channel in the musical tone forming circuit 18 is being generated, the sound generation of the fore-tone is rapidly attenuated by the dump control. In the next step 67, the value of the current group number CGN is incremented by 1, and the group to which the sound generation is to be assigned is switched. In the next group 68, 1
It is checked whether the increased value of the current group number CGN is greater than the value of the timing number data GN. If YES, the assignment of all groups has been completed and the process goes to return, but if NO, there are still groups to which tones are assigned, so the process returns to step 64 and repeats the same pronunciation assignment process as described above. When performing alternative assignment processing, the process branches from step 64 to step 69 as described above. In step 69, the alternative assignment current order of the group specified by the current group number CGN (this is
Increase the value of CALGN (CGN), which is one of CALGN(1) to CALGN(8) (in other words, the value indicating the allocation order by alternative assignment that should be processed this time) by 1. . In addition,
It is assumed that the alternative assign current orders CALGN(1) to CALGN(8) of each group are initially set to "0" when the power is turned on and when preset data is read. Therefore, when starting the alternative assignment, the value of the alternative assignment current order CALGN (CGN) becomes "1" (that is, the first assignment order) through the process of step 69. In the next step 70, the value of the alternative assignment current order CALGN (CGN) is
Alternative assignment channel number data for the same group specified by the current group number CGN (this is one of ALGN(1) to ALGN(8) and is indicated by ALGN(CGN))
Check if it is greater than the value of . If YES,
Alternative Assign Current Order
This means that the assignment order specified by CALGN (CGN) is greater than the number of channels subject to alternative assignment within that group, which means that it is a rank that does not actually exist.
In step 71, the value of CALGN (CGN) is returned to the initial allocation priority value "1". If NO, jump step 71 and proceed to step 72.
go to. In step 72, the current group number CGN and the alternative assignment current order CALGN are selected from among the channel number data ACH (1, 1) to ACH (8, 8) by alternate assignment assignment order in the "assignment table".
(CGN) (this corresponds to ACH (CGN,
CALGN)) to check whether there are multiple channels that correspond to the relevant allocation order. For example, since the number of channels is 1 in each allocation order of channels 5, 6, 7, and 8 in FIG. 3d and channels 4 and 5 in FIG. 3e, the determination in step 72 is NO. On the other hand, channels 6, 7, and 8 in FIG. 3e have the same allocation order, and channels 3, 4, and 5 in FIG. 3f also have the same allocation order; 8 also have the same allocation order, and since the number of channels is plural in each of these allocation orders, the determination in step 72 is YES. If NO is determined in step 72, step 7
3, and enter the channel number data ACH (CGN,
CALGN) is the channel to which the new key code NKC is to be assigned. On the other hand, if the determination in step 72 is YES,
Go to step 74 and enter the channel number data ACH by alternate assignment allocation order described above.
Perform normal allocation processing for multiple channels specified by (CGN, CALGN),
This determines one channel to which the new key code NKC should be assigned. New key code by steps 73 and 74
After determining one channel to which an NKC should be assigned, the process goes to step 66 described above, and the same process is performed thereafter. As is clear from the above, assignment processing is performed for each group for one new key code NKC, and the pronunciation of musical tones corresponding to the new key code NKC is assigned to each group. Therefore, musical tones corresponding to the same key code are generated in multiple series corresponding to the number of groups. Also,
In the group that performs alternative assignment, the new key code is
The allocation order is sequentially switched each time NKC is given (that is, each time a musical tone is to be generated). Further, in this case, when the assignment of the final rank is completed, the process of step 71 returns the rank to the first rank, and the assigned rank is repeatedly switched in order. Although the details of the key-off event processing are not particularly illustrated, in this key-off event processing, the key code related to the key-off event is captured as a new key code NKC, and this new key code
Detects the channel to which NKC is assigned,
The musical tone forming circuit 18 corresponds to the detected channel.
What is necessary is to send a key-off signal to the key-off signal. The tone number of the tone parameter set for each channel displayed on the display 21,
Assuming that the alternative assignment display "+" and the grouping display "←" are as shown in each example in FIG. The states of TCN(8), group setting data GRP(1) to GRP(8), and alternative assignment setting data ALT(1) to ALT(8) are as shown in Tables 1a to 1f below. In other words, by setting these data as shown in Tables 1a to 1f below, displays such as those shown in the examples in FIGS. 3a to 3f can be obtained. Furthermore, data GRP(1) to GRP(8), ALT(1) to ALT(8) set as shown in Tables 1a to 1f below.
The contents of the "assignment table" created based on this are as shown in Tables 2a to 2f below.

【table】

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〔Effect of the invention〕

As described above, according to the present invention, the assignment order is set for any plurality of musical tone forming channels, and each time a musical tone is to be generated, the channel to be assigned is switched according to the set order. The pitch information of the musical tone to be generated is assigned to the specified channel, and different musical tone element controls are performed for the plurality of channels for which the assignment order is set. Pitzchi,
Musical sound elements such as timbre and volume envelope are changed sequentially at each musical sound generation timing, and this has the excellent effect of realizing a pleasant performance effect through sequential changes. .

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing an overview of the invention, FIG. 2 is a hardware configuration block diagram showing an embodiment of the musical tone signal generating device according to the invention, and FIG. 3a
-f are diagrams showing some examples of display contents on the display in FIG. 2, FIG. 4 is a memory map showing an example of the data in FIG. 2 and data stored in the working RAM, and FIGS. 3 is a flowchart showing an example of processing executed by the microcomputer shown in FIG. 2; DESCRIPTION OF SYMBOLS 1... musical tone forming means, CH1-CHn... musical tone forming channel, 2... assignment order setting means, 3... allocating means, 4... musical tone element control means, 10... musical tone signal generation device, 20... operation panel section, 21... display, 22...Numeric keypad, TCSET...Tone setting mode switch, GRP...Group switch, ALT...Alternative assign switch.

Claims (1)

[Scope of Claims] 1. A plurality of musical tone forming channels each forming a musical tone signal of a pitch corresponding to the assigned pitch information, and an allocation order is set for any plurality of the musical tone forming channels. an allocation order setting means; and at each timing when musical tones are to be generated, switching and instructing channels to be allocated according to the order set by the allocation order setting means, and assigning musical tones to the specified channels. an allocation means for allocating pitch information of the tone forming channel; and supplying a musical tone element control signal for controlling a musical tone element of a musical tone signal formed therein to each of the musical tone forming channels, the allocation order being determined by at least the allocation order setting means. A musical tone signal generating device comprising musical tone element control means for supplying mutually different musical tone element control signals for a plurality of channels to which a plurality of musical tone element control signals are set.