JPS63293595A - Musical sound signal generator - 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 has a musical sound generation instructing means capable of instructing the generation of a plurality of types of musical tones, and the musical tones instructed by the instructing means can be generated in a plurality of musical tones. The present invention relates to a musical tone signal generating device which is assigned to any one of signal forming channels and forms and outputs a musical tone signal corresponding to the designated musical tone using the assigned musical tone signal forming channel.

[Prior Art] Conventionally, in this type of device, when a new key is pressed on a keyboard serving as a musical tone generation instruction device, the newly pressed key is assigned in the following manner. hand,
The generation of musical tones in response to the key depression is controlled.

That is, in the first method, as shown in Japanese Patent Publication No. 59-22238, the key assigned to each musical tone signal forming channel is released (the musical tone signal starts to decay).
By uniformly increasing the count value for all musical tone signal forming channels that are already in the key release state each time, the key release order of each musical tone signal forming channel is displayed based on the counted value, and each musical tone signal Comparing the count values of the forming channels, detecting the musical tone signal forming channel with the largest count value (that is, the earliest key not released), and assigning the newly pressed key to the detected musical tone signal forming channel; A musical tone related to the key is generated in this channel.

In addition, as shown in Japanese Patent Application Laid-open No. 52-25613, the second method is based on the method in which the amplitude value of the envelope waveform for controlling the volume level of musical tones in each musical tone signal forming channel is the smallest (i.e., the lowest volume level). A musical tone signal forming channel is detected, a newly pressed key is assigned to the detected musical tone signal forming channel, and a musical tone related to the key is generated in this channel.

[Problems to be Solved by the Invention] However, in the first conventional method described above, the keys are pressed in the order of the oldest key release, regardless of the decay time of the musical sound (the time from the key release to the end of the sound generation). Since the allocation process is performed, there is no problem if all the generated musical tones are of the same type and the decay times of all generated musical tones are approximately the same, but if multiple types of musical tones are generated, that is, the decay times may be different at the same time. When generating a musical tone with a long decay time and a musical tone with a short decay time, even if a musical tone with a long decay time has a long remaining time, it will be more difficult to produce a musical tone with a short decay time than a musical tone with a short decay time. However, there is a serious problem in that the sound generation of musical tones having a long decay time may be stopped first, and the first method is not suitable for a musical tone signal generating device that generates a plurality of types of musical tones.

Furthermore, according to the second method, it goes without saying that a circuit searches for a musical tone signal forming channel to which generation of a musical tone whose envelope waveform has the minimum amplitude value is assigned.
In addition to a circuit for detecting the amplitude value of the envelope waveform, a circuit for transmitting the detection result to the channel assignment control circuit is required1, which raises the problem of increased manufacturing cost of the musical tone signal generator using this second method. there were.

The present invention has been devised in view of the above-mentioned problems, and its purpose is to suppress the increase in manufacturing costs and to appropriately allocate the generation of musical tones in a musical tone signal generator that generates multiple types of musical tones. It is an object of the present invention to provide a musical tone signal generating device.

[Means for Solving the Problems] In order to solve the above problems and achieve the object of the present invention, the present invention has a feature that, as shown in FIG. a musical tone generation instruction means 1; a musical tone signal forming means 2 having a plurality of musical tone signal forming channels, each of which forms and outputs a musical tone signal corresponding to the musical tone instructed by the musical tone generation instruction means 1; an allocation means 3 for allocating the generation of the musical tone instructed by the musical tone generation instruction means 1 to one of the plurality of musical tone signal forming channels and controlling the formation of a musical tone signal corresponding to the instructed musical tone; Remaining sound generation time measuring means 4 corresponding to each musical sound signal forming channel and measuring the remaining time of the musical tones assigned to be generated by the allocating means 3 according to the type of the assigned musical tones; and the remaining time of sound generation measuring means 4. A musical tone signal generating apparatus is constituted by the allocation control means 5 which controls the selection of the allocated channel by the allocation means 3 in accordance with the remaining sound generation time measured by the means 4.

[Operation of the Invention] In the present invention configured as described above, the remaining time measuring means 4 for one sound generation measures the remaining time of sound generation of the musical tone assigned to be generated for each musical tone signal forming channel in the musical tone signal forming means 2. The measurement is carried out according to the type of the assigned musical tone, and the assignment control means 5 controls the selection of the assigned channel by the assignment means 3 according to the measured remaining sound generation time.

As a result, the allocation means 3 assigns the musical sound generation instruction means 1 based on the remaining sound generation time measured according to the type of musical sound.
The generation of the musical tone instructed by is assigned to one of the musical tone signal forming channels in the musical tone signal forming means 2, and the musical tone signal corresponding to the musical tone instructed by the musical tone generation instruction means 1 is the assigned musical tone signal. The tone signal is formed in the forming channel and outputted from the musical tone signal forming means 2.

[Effects of the Invention] As can be understood from the above description of the operation, according to the present invention, channel allocation processing is performed according to the sound generation time of each musical tone corresponding to the type of musical tone to be generated, so that musical tones can be generated easily. When a new musical tone is to be assigned, the generation of the new musical tone is assigned to the musical tone signal forming channel that is currently generating a musical tone with a short remaining time, or the assignment of new musical tone generation is prohibited until the generation of the musical tone is completed. It can be controlled as follows. As a result, it is possible to prevent a situation in which a musical tone with a long remaining sounding time is stopped before a musical tone with a short remaining sounding time, as in the first conventional method, and tones can be appropriately controlled. It will be held in

Further, according to the present invention, there is no need to detect the amplitude value of the envelope waveform as in the second conventional method, and the remaining sound generation time measuring means 4 and the allocation control means 5 are connected to the allocation means 3.
In addition, the same integrated circuit can be constructed of, for example, a microcomputer, and the musical tone signal generating apparatus can be manufactured at low cost.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 schematically shows a musical tone signal generating device according to the present invention. This musical tone signal generator includes an operation panel 10, a bass drum, a snare drum, a high hat, a tom tom, and a controller.
a musical sound signal generation circuit 20 that generates percussion instrument sound signals such as;
The microcomputer section 30 detects the operation state on the operation panel 10 and controls the generation of the musical tone signal in the musical tone signal generation circuit 20.

The operation panel 10 is provided with eight pad operators, 11.4 mode operators, 12.4 WA group operators 13, other operators 14, and a tempo adjustment volume 15. The pad operators 11 are used to instruct the production of percussion instrument sounds by pressing the pad operators 11.
correspond to the Oth to seventh percussion instrument sounds belonging to the group specified by the group operator 13, respectively. The pressing operations of these pad operators 11 are detected by eight pad switches provided in the pad switch Sochi circuit 1a corresponding to the same operators 11, respectively.
This pad switch circuit 11a is connected to a microcomputer section 30 via a bus 31. Each mode operator 12 instructs selection of the Oth to third modes by pressing the mode operator 12.

0th mode: A mode in which the stopped state of the automatic rhythm is selected and only percussion instrument sounds are allowed to be produced by operating the pad operator 11.

First mode: A mode in which the operating state of the automatic rhythm is selected and a percussion instrument sound generated by operating the pad operator 11 is added to the percussion instrument tone sequence based on the rhythm.

Second mode: Selects the operating state of the automatic rhythm, and in response to the operation of the pad operator 11, stops the rhythm until the end of the measure, and uses the pad operator 11 instead of the percussion instrument tone sequence based on the rhythm. Mode for inserting percussion sounds.

Third mode: A mode in which generation of percussion instrument sounds corresponding to the first operation of the pad operator 11 is prohibited in the second mode.

The group operator 13 is used to specify a percussion instrument sound group whose sound is instructed by the pad operator 11. Each group operator 13 has 32 types of percussion instrument sounds, and one group has 8 percussion instrument sounds.
Each of the percussion instruments corresponds to groups O through 3, which are divided into four groups. These mode operators 12 and group operators 13 are operated by the mode/group switch circuit 1.
The mode/group switch circuit 12a is configured to be detected by four mode switches and four group switches provided corresponding to each operator 12.13 in the mode/group switch circuit 12a. and is connected to the microcomputer section 30.

The other operators 14 are for instructing the selection of the rhythm type, etc., and these operations are performed by the switch circuit 14a connected to the microcomputer section 30 via the bus 31.
It is designed to be detected by each switch provided inside. The tempo adjustment volume 15 sets the tempo of the automatic rhythm, and variably sets the frequency of the tempo clock signal generated by the tempo clock signal generator 15a. The tempo clock signal generator 15a outputs the tempo clock signal of the set frequency to the microcomputer section 30 via the bus 31.

The musical tone signal generating circuit 20 includes a parameter memory 21 and a musical tone signal forming circuit 22. The parameter memory 21 is 3
It stores parameter data necessary for forming two types of percussion instrument sound signals, and outputs the parameter data under the control of the microcomputer section 30. The musical tone signal forming circuit 22 has six musical tone signal forming channels,
Each channel is controlled by the microcomputer section 30 and uses parameter data supplied from the parameter memory 21 to select one of the 32 types of percussion instrument sounds.
To form and output digital musical tone signals corresponding to various types of percussion instrument sounds. The output of this musical tone signal forming circuit 20 is D/A
It is connected to a converter 23, which converts the supplied digital musical tone signal into an analog musical tone signal and outputs the analog musical tone signal.

The output of the D/A converter 23 is connected to the sound system 2.1. The sound system 24 is composed of an amplifier and a speaker, and produces musical tones corresponding to the supplied analog musical tone signals.

The microcomputer section 30 includes a timer 32 connected to a bus 31, a program memory 33, a CPU 34, a pattern memory 35, a keep time table 36, and a register group 37.

The timer 32 outputs a timer interrupt signal to the CPU 34 at predetermined intervals (for example, about 50 milliseconds).

The program memory 33 stores programs corresponding to the flowcharts shown in FIGS. 6 to 11. CPU3
4 starts execution of the "main program" corresponding to the flowchart of FIG. The [timer interrupt program] corresponding to the flowchart in the figure is executed as an interrupt, and the tempo clock signal generator 1
Upon arrival of the tempo clock signal from 5a, a "tempo clock interrupt program" corresponding to the flowchart of FIG. 10 is executed.

The pattern memory 35 is composed of a ROM, and as shown in FIG. 3A, has a plurality of pattern channels corresponding to the rhythm types, and each channel is divided into a rhythm pattern data section 35a and a rhythm tone data section 35b. .

The rhythm pattern data section 35a contains 32 pieces of rhythm pattern data RP TN o to RP TN 31 corresponding to a tempo count TCNT (0 to 31), which will be described later.
As shown in FIG. 3B, each piece of data RP TN o to RP TN 31 is composed of 12 rhythm pattern data arranged corresponding to 12 types of percussion instrument sounds. volume data VOL. ~VO
Consists of L 11. Each volume data VOL, ~V OL
1t consists of 2 bits of data each, and is ``0''.
represents the non-pronunciation state of the percussion instrument sound, and "1" ~
"3" represents the volume level when the percussion instrument sound is produced. The rhythm tone data section 35b includes the rhythm pattern data RP T No out of 32 types of percussion instrument sounds.
12 whose sound is controlled by S-RP T N S 1
Type of percussion instrument note name, that is, the rhythm pattern data RP
Rhythm tone data RTNDTo to RTNDT representing percussion instrument tone names used in the rhythm corresponding to T No ""-RP T N 3 K is stored. Note that these 12 rhythm tone data RTNDT,
~RTNDT1□ is the 12 volume data ■OLo
~VOL1, respectively. The keep time table 36 is also constituted by a ROM, and as shown in FIG. Keep time data KEEP, ~KEEP, representing the time until the sound generation is almost completed) as the number of intervals of the timer interwoven signal from the timer 32.

I remember.

The register group 37 corresponds to each of the six musical tone signal forming channels of the musical tone signal forming circuit 22, and stores channel tone data CHT representing percussion instrument sounds produced in each channel.
A channel tone register group CHTNR (Figure 5A) that stores N (0) to CHT N (5);
and channel keep time data CHK representing the time until the end of the percussion instrument sound being produced in each channel.
It includes a channel keep time register group CHKTR (FIG. 5B) that stores T(0) to CHKT(5), and also includes a register group that stores the following data and other data.

Old pad data PAD OLD... 8-bit data representing the previous state of the eight pad operators 11, each bit corresponding to each of the Oth to seventh operators 11, "1" represents the pressed operation state of each pad operator 11, and "0" represents the operation release state of each pad operator 11.

New pad data PADNEW... 8-bit data representing the current status of the eight pad operators 11, where each pitch I corresponds to each of the Oth to seventh operators 11. 1" represents the pressed operation state of each pad operator 11, and "O" represents the operation release state of each pad operator 11.

Old mode data M OD OLD . . . represents the mode previously selected by the mode operator 12. (0 to 3) New mode data MODNEW: Indicates the mode newly selected by the mode operator 12. (0 to 3) Group data GRP: represents the group selected by the group operator 13. (0 to 3) Tempo count TCNT: "1" each time the tempo clock signal generator 15a generates a tempo clock signal
The value increases in increments to represent the progressing position of the rhythm. (0 to 31) Rhythm break flag BRF: In the first to third modes, "O" indicates that the rhythm is in operation, and "1''
represents the stop of the rhythm.

Next, the operation of the embodiment configured as described above will be explained with reference to flowchart 1 in FIGS. 6 to 11.

When the power switch is turned on, the CPU 34 starts executing the main program at step 100 in FIG. 6, and initializes various data by clearing each register in the register group 37 at step 101. Next, C.P.
U34 inputs new mode data MODNE in step 102.
The old mode data MODOLD is updated by setting W as the old mode data MOD oto, and in step 103, in cooperation with the mode group switch circuit 12a and the register group 37, it is determined whether the mode operator 12 has been newly pressed. Determine whether or not. Now, mode control 1
2 is not newly operated, the CPU 34 returns to step 1.
At step 03, it is determined that it is rNOJ, and the program is executed at step 10.
4, in step 104 it is determined in cooperation with the mode group switch circuit 12a and the register group 37 whether the group operator 13 has been newly operated.

In this case as well, if the group operator 13 is not newly operated, the CPU 34 makes a "NO" determination in step 104 and advances the program to steps 105 and 106. In the suite block 105, a pad sound processing routine, which will be described later, is executed, and in step 106, processes such as rhythm type selection are executed. After processing these steps 105 and 106, the program proceeds to step 10.
2, and the CPU 34 continues to execute the circular process consisting of steps 102-106.

During this circulation process, when the mode operator 12 is pressed anew, the CPU 34 returns rYES in step 103.
It is determined in step 107 that the value corresponding to the number of the mode operator 12 being pressed is set to the new mode data MO.
DNEW, and in step 108 it is determined whether the old mode data M OD OLD is "0". In this determination, if the old mode data MODθLD is other than "0", that is, if a mode other than the O-th mode has been previously selected, it is determined as rNOJ and the program proceeds to step 104. Also, old mode data MOD
If OLD is "0", that is, the 0th mode was previously selected, rYESJ is determined and the tempo count TCNT is set to "0" in step 109, and step 11
0, the rhythm break flag BRF is set to "0". The process in step 109 is carried out from the 0th mode to the 1st mode.
When changing to the third mode, that is, when transitioning from the rhythm stop state to the rhythm operation state, the tenbo counter 1-T
This means setting CNT to the initial value. Furthermore, the processing at step 110 means setting the rhythm break flag BRF to a state that allows rhythmic movement at the time of the transition.

On the other hand, during the circulation process consisting of steps 102 to 106, when the group operator 13 is newly pressed, the CP
U34 determines YESJ in step 104, and in step 111 the group operator 13 being pressed is
The value corresponding to the number is set as the group data GRP, and the program proceeds to step 105. As a result, eight types of percussion instruments belonging to the group represented by the group data GRP are assigned to the eight pad switches 11.

Through such processing, the sound production of percussion instrument sounds is controlled according to the set mode and group, but since the sound production manner is completely different depending on the mode, the operation will be explained for each mode below.

(1) When the 0th mode operator 12 in the Oth mode is operated, the operation is detected by the processing in steps 102 and 103 above, and the new mode data MODNtw is
7 is set to "0", and the musical tone signal generating device is set to the O-th mode in which only the production of percussion instrument sounds by the operation of the pad operator 11 is allowed.

In such a case, the CPU 34 performs steps 102 to 10 above.
By executing the "pad sound processing routine" in step 105 during the cyclic process consisting of
Controls the pronunciation of percussion instrument sounds in response to pressing operations. this"
In the "pad sound generation processing routine", the CPU 34 starts executing the routine at step 200 in FIG.
In step 201, status data representing the status of the eight pad operators 11 is transferred from the pad switch circuit 11a to the bus 3.
1 and sets the captured state data as new bad data PADNEW.
U34 inputs new bad data PADNE in step 202.
1= and the inverted pad data PADOLD, which is obtained by inverting each bit of the old pad data PADOLD, are ANDed for each bit, and the result of the operation is added to the pad event data PE.
Set as VT. This logical AND operation is to detect the pressing operation of each pad operator 11, and the bit data at the position corresponding to the operated pad operator in the pad event data PEVT becomes 1'' in this step 202.
After the process, the CPU 34 sets and stores the new pad data PAD Nty as the old pad data PADOLD in order to detect the next pressing operation of each pad operator 11 in step 203.

Next, in step 204, the CPU 34 determines whether the pad event data PEVT is "0". now,
If the pad operator 11 is not operated, the pad event data PEVT has been set to "O" by the processing in step 202, so the CPU 34 determines "YES" in step 204, and returns the program to step 205. At step 205, the execution of the "pad sound processing routine" is terminated and the program returns to the "main routine" (FIG. 6). From then on, CPU34
executes the above-mentioned cyclic processing of the "main routine" again.

On the other hand, if any of the pad operators 11 is operated, the pad event data PEVT is
Since it is set to a value other than rQJ by the process in step 2,
In the determination process in step 204, the determination is "NO", and the CPU 34 in step 206 sets the variable i to "
0'' and the program proceeds to the event data search routine consisting of steps 207-210. In addition,
The variable i is set to ``0'' to ``7'' with the least significant bit LSB of the pad event data PEVT as ``O''.
This indicates each bit of EVT, that is, corresponds to eight pad operators 11. This event data search routine sequentially increments the variable i by 1 from "0" to "7" through the processing of steps 209 and 210, and selects the data specified by the variable i from the pad event data PEVT through the processing of step 207. The event data is searched by extracting the data of the bit as the switch data SW and determining whether the switch data SW is "0" in step 208. During the processing of these steps 207 to 210, the CP
If U34 determines "NO" based on the switch data SW set to "1" in step 208, that is, if event data is detected, the program advances to step 211 and subsequent steps.

In the Ste-Tsub 211, tone data TONE representing the numbers of 32 types of percussion instruments is input to the group operator 13.
The group data GRP selected by and set by the process of step 111 (FIG. 6) and the variable i set by the event data search routine.
Based on this, the following calculation is performed to set a value representing the name of the percussion instrument tone to be sounded in response to the operated pad operator 11.

TONE=8*GRP+i Next, in step 212, the CPU 34
Based on the new mode data MOD NEW set to "0" in the process of step 07 (FIG. 6), a ``YES'' determination is made, and the program proceeds to step 213, ``pad assignment processing routine''.

The details of this routine are shown in FIG.
4 starts the processing of the same routine in step 300, and in step 301, the Oth to fifth
The variable k that specifies the channel is set to "0", and in step 302, the channel keep time data CHKT(0
) is "0". Channel keep time data CHKT(0) of each channel including channel keep time data CHKT(0) of this fifth channel
0) to CHK T (5) represent the time until the end of the sound of the percussion instrument currently sounding on the assigned channel, and is determined by referring to the keep time table 36 by the process of step 307 when the percussion sound is sounding, which will be described later. Keep time KEEP corresponding to the percussion instrument sound. -, KEEP, , and is set to "1" by executing the "timer interrupt program" every time a timer interrupt signal arrives from the timer 32.
It can be reduced by increments. That is, when the timer 32 generates a timer interrupt signal, the CPU 34 starts executing the "1 timer interrupt program" at step 400 in FIG. 9, and sets the variable j representing each channel to "rO" at step 401. After that, through the process of steps 404 and 405, the variable j is increased by 11'' from r By subtracting "1" from each value (cHK'rU), the keep time data of the fifth channel CHKT(5
) is completed, select "YES" in step 405.
That is, in step 404, the updated variable j is determined to be "6", and in step 406, the execution of this 1-timer interrupt program is terminated.

If the channel keep time data CHKT(0) set in this way is "O", the CPU 34 determines 'YES' in step 302 (FIG. 8),
The program proceeds to step 306. Further, if the channel keep time data CHK T (0) is not r□, the CP Ll 34 determines "
It is determined that the channel keep time data CHKT(k) is 'OJ' by the determination process of step 302 while increasing the variable k by ``1'' from ``10'' to ``5'' by the process of steps 303 and 304. Search for a certain channel. As a result of this search, if a channel whose channel keep time data C)l K T (k) is "O" is found, the program proceeds to step 306 as described above;
The same data CHKT(k) is reduced to 10 by the processing of ~・304.
” is not found, CPU3
4 is r in step 304 by the process of step 30B.
6. rYESJ is determined based on the updated variable k, and the program proceeds to step 305. Step 30
5, the CPU 34 selects the channel keep time data CH that gives the minimum value from all the channel keep time data CHK T (0) to CHK T (5).
Search for K T (+air1) and retrieve the same data CHK T
A value w indicating the channel number to store ([l1in)
The program proceeds to step 306 by setting in as the variable.

Next, in step 306, the CPU 34 performs the step 3 described above.
02 to 304 or channel tone data CH specified by the variable k set by the process of step 305
T N (k) is set to the tone data TONE set by the process in step 211 (FIG. 7), and channel keep time data CHK T (k) specified by the same variable k in step 307 is set to Keep time K of the percussion instrument sound stored in the keep time table 36 and represented by the 1-tone data T ONE
Set to EEPrONB. After this setting, the CPU 34 inputs variable k and channel data CHT N (k
) is output to the musical tone signal generation circuit 20 via the bus 31.

In the musical tone signal generation circuit 20, the parameter memory 2
Channel tone data CHT N (
k), the musical tone control parameters necessary for forming the percussion instrument sound represented by the data CHTN(k) are output to the musical tone signal forming circuit 22, and the forming circuit 22 uses the supplied variable k. Using the parameters, a digital musical tone signal of a predetermined volume corresponding to the percussion instrument sound represented by the channel tone data CHT N (k) is outputted in the musical tone signal forming channel specified by the channel tone data CHT N (k). In this case, if the musical tone signal forming channel is outputting a digital musical tone signal based on a previous instruction, it is preferable to stop outputting the same musical tone signal and then form and output a new digital musical tone signal. This digital musical tone signal is supplied to a D/A converter 23, where it is converted into an analog musical tone signal and output to a sound system 24. The sound system 24 produces musical tones corresponding to this analog musical tone signal. Through such processing,
When a pad operator 11 is operated, the operated pad operator 11 is always assigned to one of the channels, and the group corresponding to the operator 11 is selected by the group operator 13. Percussion sounds are always produced.

After the processing in step 308, the CPL 134 terminates the execution of the "pad allocation processing routine" in step 309, and returns the program to step 209 (FIG. 7). Thereafter, as described above, the CP LT 34 executes the circular process consisting of steps 207 to 210 while changing the variable i.
is sequentially increased from "1" to "7", and events related to all pad operators 11 are detected, and when a press operation of the pad operator 11 is detected, the pad operated as described above is detected. The production of percussion instrument sounds corresponding to the operators 11 is controlled. Then, when the event detection for all the pad operators 11 is completed and the variable i becomes "8" through the process in step 209, the CPU 34 determines "YES" in step 210 and returns to step 205.
The execution of this ``pad sound processing routine'' is ended.

On the other hand, when the tempo clock signal generator 15a outputs a tempo clock signal during the program processing as described above,
The CPU 34 executes the 1 tempo clock interrupt program shown in flowchart 1 in FIG. 10 at step 50.
0, and in step 501 new mode data M
Determine whether OD NEIF is "O". In this case, the musical tone signal generating device is set to the O-th mode and the new mode data MODI-KW is "0", so the CPU 34 determines 'YES' in step 501, and the program proceeds to step 502. Proceeding to step 502, the execution of this "tempo clock interrupt program" is ended. As a result, in this Oth mode, percussion instrument sounds corresponding to the rhythm are not produced.

As can be understood from the above explanation, according to this O-th mode, by executing the 1-pad assignment processing routine consisting of steps 300 to 309 (FIG. 8), Since the percussion instrument sound is assigned to one of the plurality of musical sound signal forming channels, and the assigned percussion instrument sound is produced, even if the number of musical sound signal forming channels is reduced to six, As many as 32 types of percussion instrument sound signals can be generated, and the manufacturing cost of the musical sound signal generating device can be reduced without deteriorating playability.

In addition, in this allocation, the allocation priority is determined by the processing in step 305 using the keep time corresponding to the sounding time of each percussion instrument sound, so the percussion instrument sound that was previously being sounded will be kept for that keep time. This prevents a situation in which a percussion instrument sound having a long sounding time is erased with a long sounding time remaining.

(2) First mode When the first mode operator 12 is operated, the operation is detected by the processes in steps 102 and 103 (FIG. 6), and the new mode data M is detected by the process in step 107. OD Nl!W is set to [1j,
The musical sound signal generating device is set to a first mode in which it allows automatic rhythm operation and also allows generation of percussion instrument sounds by operating the pad operator 11.

In this case as well, the CPU 34 performs steps 102 to 10 described above.
By executing the "pad sound processing routine" in step 105 during the cyclic process consisting of
Controls the pronunciation of percussion instrument sounds in response to pressing operations. In this case, new mode data? AODwEw is set to "1", but in the pad sound generation processing routine 91, it is determined as "YESJ" in step 212 (FIG. 7) as in the O mode, and "YESJ" is determined in step 213.
Since the "pad assignment processing routine" is executed, the generation of percussion instrument sounds by the pad operator 11 is controlled in exactly the same manner as in the Oth mode.

On the other hand, when the tempo clock signal generator 15a outputs a tempo clock signal during the program processing as described above,
The CPU 34 executes the "tempo clock interrupt program" shown in flowchart 1 in FIG. 10 at step 50.
Start at 0. In this case, new mode data MODNE
Since w is set to "1", the CPU 34 determines "NO" in step 501, and determines in step 503 whether or not the rhythm break flag BRF is 1''. is set to "1" during the second and third modes, as will be described later.
In this case, the CPU: J4
The determination in step 503 is "rNO" and the program proceeds to step 504.

By referring to the pattern memory 35 in step 504, the CPU 34 generates rhythm pattern data R corresponding to the selected rhythm type and tempo count TCNT.
PTNTcN-r and the read rhythm pattern data RP T N tcNt as event data EV.
T, and in step 505 it is determined whether the same data EVT is r Q ,1. If the event data EVT is "0" now, the CPU 34 performs step 5.
05 is rYES” and the program is executed in step 5.
Proceeding to step 12, the generation of a percussion instrument sound signal based on the rhythm described later is not controlled.

Moreover, if the event data EVT is not "O",
The CPU 34 determines 'N 0.1 in step 505, sets variables p and q to each tz "0" in step 506, and advances the program to step 507. In this case, the variable p is the 12 types of percussion sounds produced in the selected rhythm (rhythm), -n data RTNDT, -R
TNDT1. and each rhythm pattern data RP T No ~.

RPTN, each volume data of 1 V OLo ~ V OL
++ is designated, and variable 9 designates the Oth to fifth channels of the musical tone signal forming circuit 22. Next, in step 507, the CPU 34 sets the least significant bit of the event data E to 'T as the O-th bit and sets it as the 2nd p (
=0)-th and 2p+1 (=1)-th bit data are extracted, and the 2-bit data is converted into volume data VOL.
Set as . The process in step 507 is for the pth (=O)th volume data VOL of the rhythm pattern data RPTNTCNT. '5 means to extract as volume data VOL.

After the processing in step 507, the CP LT 34 determines in step 508 that the set volume data VOL is rO
”. If the volume data V○L is “0”
”, it is determined as “YES” in step 508, and the program proceeds to step 510; otherwise, in the same step 508, it is determined as “N OJ”, and the program executes one pattern assignment process in step 50. You can proceed to "routine".

The details of this routine are shown in FIG.
34 starts processing the same routine at step 600,
In step 601, similarly to the determination process in step 302 (FIG. 8), channel keep time data CHKT of the channel specified by the variable qi=0) set in the process in step 506 (FIG. 10) is determined. (
q) is r□.

Determine whether or not.

Now, the channel keep time data CHKT(q) is “
0'', the CPU 34 selects r in step 601.
It is determined as YESJ, and in step 602 the variable q(-
Channel I-on data cHT specified by 〇)
N (where q> is the rhythm representing the percussion instrument sound specified by the variable ρ) -n data RT N D T p is set, and in step 603, the channel keep time data CHK T (q) specified by the same variable q is set. is stored in the keep time table and the rhythm tone data RT
The keep time of the percussion instrument sound represented by NDTp is set to KEEPRTNDT2. After these settings, the CPU 34 sets the variable q (=
O), channel tone data CHT N (+1) and volume data VOL are output to the musical tone signal generation circuit 20 via the bus 31. As mentioned above, the musical tone signal generation circuit 20 generates channel tone data CHT on channel +1.
A digital musical tone signal corresponding to the percussion instrument represented by N(q) is formed and output. However, in this case, the volume of the musical tone signal is controlled according to the value of the volume data VOL. This digital tone signal is also supplied to the sound system 24 via the D/A converter 23, as in the case described above, and the system 24 generates a tone corresponding to the tone signal. As a result, rhythmic musical tones are automatically produced. After processing step 604 above, CP 11
34 updates the variable q by adding "1" to the variable q in step 605 (q=1), and in step 606
At this point, the execution of this r-pattern assignment processing routine is terminated and the program returns to step 509 (FIG. 10).

In addition, in the determination process of step 601 above, the variable q
If the channel keep time data CHKT(q) specified by (=O) is not rOr, the CPU 34 determines rNo in step 601, and in step 607,
While the variable q is sequentially increased from rl to "5" through the process in step 608, in step 601 a search is made for a channel where channel keep time data cHKT (q> is "0", that is, an empty channel. As a result, an empty channel is searched for. If found, the above steps 602 to 604
At the same time, at step 605, the variable q is updated, and at step 606, the execution of this r pattern assignment processing routine is completed. However, even if the variable q is increased to "5", if no free channel is found, the CPU 34
Variable q set to "6" by the process of step 607
Based on this, it is determined "YES" in step 608,
At step 606, the execution of this one-pattern one-allocation processing routine is ended. In this case, no percussion instrument sound based on the rhythm pattern is produced.

In this way, in the "pattern assignment processing routine", if there is an empty channel, a musical sound signal of a percussion instrument sound according to the rhythm is formed in the empty channel.
If there is no empty channel, no musical sound signal of percussion instrument sound corresponding to the rhythm is formed. Note that at the end of the execution of this "pattern assignment processing routine", the variable q is set to the channel number next to the assigned channel, or "6".

After processing steps 508 and 509 (FIG. 10),
In step 510, the CPU 34 sets the variable p to rl by adding ``rl'' to the variable p, and in step 5
In step 11, it is determined whether the variable p is "12" or the variable q is "6". Since the variable q being "6" means that there is no vacant channel, the CPU 34 determines "YES" in step 511 and advances the program to step 512 and subsequent steps. Also, the variable q is "6"
If not, the CPU 34 performs the above-mentioned "
rNOJ is determined based on the variable p set to ``1'', and the program returns to step 507. At this time, since the variable p is set to "1", the CPU 34 proceeds to step 507 to obtain the 2pth (=2)th and 2p+1 (-3)th data of the data EVT. The sound data is extracted and the data of the 2-pitch I is set as the volume data VOL, and the sound production control process based on the volume data VOL is executed as described above through the processes of steps 508 and 509, and the variable is set again in step 510. p is updated. Through the cyclic process consisting of steps 507 to 511, each volume data VOLO~, VOL 11 of the rhythm pattern data RPTNTCNT corresponding to the tempo callan) and TCNT are sequentially read out in order to control the sound production of percussion instrument sounds. be done. If there is an empty musical tone signal forming channel as described above, after the variable p is sequentially updated to "11", the CPU 34 in step 511 performs the process of step 510 to select "12".
Based on the variable 1) set to ``, the determination is ``YES'' and the program proceeds to step 512 and subsequent steps.

At step 512, the CPU 34 counts the tempo TCN.
By adding "11" to T, the same count TCNT is incremented, and in step 513, the tempo count TCNT is
It is determined whether the rhythm has progressed to the end of one measure or not based on whether or not is "32". In this judgment,
If the tempo clock run 1-TCNT is not "32", the CPU 34 makes a negative determination in step 513, and ends the execution of the "tempo clock interrupt program" in step 502. Also, Tempokaran)・T
If CNT is "32", the CP Ll 34 sets the tempo callan l-T CN T to "0" in step 514, and in step 515 sets the tempo callan l-T CN T to "0", and in step 515 sets
The state data of the pad operator 11 is imported in the same way as the process shown in FIG.
NEW, and in step 516 it is determined whether or not the same-place pad data PADNEW is rQJ.

In this judgment, the new pad data PADsEw is “
If it is not “O”, it is determined as “NO” and the program proceeds to step 502, where the data PADNtw is “0”.
If so, it is determined as rYES, the rhythm break flag BRF is set to "0" in step 517, and the program proceeds to step 502. Note that this first
In this mode, the rhythm break flag BRF is initially set to "O" as described above and is not changed to "1" thereafter, so these steps 516,
Processing 517 is meaningless. When the execution of this "tempo clock interrupt routine" is finished in step 502, the CPU 3-1 moves on to execution of the interrupted program.

In this way, according to the first mode, the percussion instrument sound according to the rhythm is generated visually, and the pad operator 11
Percussion sounds are added. Furthermore, in this case, the generation of percussion instrument sounds based on the rhythm is performed by the "pattern assignment processing routine" consisting of steps 600 to 608 described above (Fig. 11).
However, percussion sounds generated by the pad operator 11 are always prohibited by executing the "Bas/Sodo assignment processing routine" (FIG. 8) consisting of steps 300 to 309 described above. Since it is pronounced, the performer's intention is fully reflected.

3) Second mode When the second mode operator 12 is operated, the operation is detected by the processes in steps 102 and 103 (FIG. 6), and new mode data MODNEW is generated by the process in step 107. is set to 12'', and the musical tone signal generating device allows automatic rhythm operation, and also stops the rhythm until the end of the measure in response to the operation of the pad operator 11, and replaces the percussion instrument tone sequence with the rhythm. A second mode is set in which a percussion instrument sound generated by the pad operator 11 is inserted into the second mode.

In this case as well, the CPU 34 performs steps 102 to 10 described above.
By executing the "pad sound processing routine" in step 105 during the cyclic process consisting of 6, the O and 1
Similarly to the mode, the sound production of percussion instrument sounds is controlled according to the pressing operation of the Pa/Sodo operator 11. However, in this case, the mode data MOD NEW
is set to 12'', so when pad operator 11 is operated, the 1-bad sound generation processing routine is executed.
(FIG. 7), it is determined to be 1NOJ at step 212,
rYEs at step 214.

It is determined that the rhythm break flag BRF is set to "1" in step 215. As a result, a tempo clock signal is output from the tempo clock signal generator 15a, and the ``tempo clock interrupt program'' (first
Even if the process shown in FIG. Ru.

Then, when the tempo count TCNT advances and reaches 132J, the CPU 34 selects "YES" in step 513.
After the above processing in steps 514 and 515, it is determined in step 516 whether the new pad data PADNEW is "O" or not as described above. When darning,
If the pad operator 11 is not being pressed at this time, the CPU 34 returns to step 516.
Based on the new bad data PADNtw set to "O" in the process of step 15, the determination is "YES", and the rhythm break flag BRF is changed from "1" to "1" in step 517.
Since the setting is changed to "O", the percussion instrument sound based on the rhythm will be automatically produced from the next measure onward.Also, if the pad operator 11 is pressed,
The P U 34 performs the step 5 in the step 516.
Based on the new pad data PADNP and W set to a value other than "0" by the process in step 15, rNOJ is determined,
The program proceeds to step 502 without changing the setting of the rhythm break flag BRF (-"1"), and the execution of this "tempo clock interrupt program" ends at step 502, so the rhythm break continues even in the next measure. The flag BRF is maintained at "1", and the generation of rhythmic percussion instrument sounds in the next measure is also prohibited.

As can be understood from the above explanation, according to this second mode, the performer's operation of the pad operator 11 stops the rhythm within the measure at the timing of the operation, and the percussion instrument sound based on the pad operator 11 changes to the rhythm. Since the percussion instrument tone sequence can be obtained in place of the percussion instrument tone sequence, the performer can insert rhythms such as drum solos into the rhythm that is automatically generated at any timing according to the performer's will, improving the playability of the musical sound signal generating device. do.

(4) Third mode When the third mode operator 12 is operated, the operation is detected by the processes 102 and 103 (FIG. 6) of the above steps, and the new mode data MODNtw is detected by the process of the above step 107. is set to "3", and the musical tone signal generating device is set to a third mode in which the generation of percussion instrument sounds by the first operation of the pad operator 11 is prohibited in the second mode.

In this case, the CPU 34 performs steps 102 to 106 described above.
By executing the "pad sound generation processing routine" in step 105 during the cyclic process consisting of, the sound generation of percussion instrument sounds is controlled in accordance with the pressing operation of the pad operator 11, but the mode data MODNEW is set to "3". Therefore, when the pad operator 11 is operated, "NO" is determined in steps 212 and 2111 of the above-mentioned "pad sound generation processing routine" (FIG. 7), and the rhythm break flag BRF is set to "1" in step 216. ”. Now, if the rhythm break flag BRF is 1", that is, the rhythm is stopped, the CPU 3.1 will perform the same step 2.
At step 16, rYESJ is determined, and the program proceeds to step 213, which is similar to the above, to control the sound production of percussion instrument sounds by the pad operator 11. However, if the rhythm break flag BRF is "0", that is, indicating the rhythm operating state, the CPU 34 determines "NO" in step 216, and sets the rhythm break flag BRF to 1" in step 217. The program is executed in step 209 without executing the "pad allocation processing routine J" in step 213.
Proceed to. As a result, no percussion instrument sound is produced by operating the pad operator 11. In this case, when the bad operation ear piece 11 is pressed next, the rhythm break flag BR is
Since F is set to "1", step 216
Since the determination in step 213 is rYES and the "pad assignment processing routine" in step 213 is executed, the production of percussion instrument sounds by operating the pad operator 11 is permitted.

Note that the other operations are the same as in the second mode.

In this way, according to the third mode, even if the pad operator 11 is pressed while the rhythm is in motion, the percussion instrument sound corresponding to the operation is not produced, and the percussion instrument sound is produced from the next operation. In other words, since the production of only percussion sounds by the first operation of the pad operator 11 is prohibited, it is possible to make sure that the rhythm is stopped from the beginning of the measure as in the second mode, and when the pad operator 11 is operated. If you want to generate a percussion instrument sound, press the pad operator 11 near the end of the previous measure, and even if you press the pad operator 11 at the beginning of the next measure with a slight delay, the sound will be played in that measure. Since no rhythmic percussion instrument sound is produced on the first beat of , the performance of the musical sound signal generating device is improved.

Note that in the above embodiment, the volume of the percussion instrument sound produced by operating the pad operator 11 was always kept constant;
A touch sensor may be provided to detect the pressing operation speed, pressing operation pressure, etc. of the pad operator 11, and the volume of the percussion instrument sound may be controlled by the Hata/Sochi sensor output. According to this, it is possible to add an accent to the percussion instrument sound generated by operating the pad operator 11, and the playability of the musical sound signal generating device is further improved.

Further, in the above embodiment, the channel keep time CHKT set at the time of sound generation is always constant for each percussion instrument, but the channel keep time CHKT is made variable depending on the volume level of the percussion instrument sound to be produced. It's okay. In this case, channel keep time data CHKT
Various channel keep time data KE read from the keep time table when setting (0) to CHKT(5)
EPO.about.KEEP31 may be weighted by the volume data VOL. Further, when a touch sensor is provided corresponding to the pad operator 11 as described above, the channel keep time data KEEPo to KEE
The touch data from the touch sensor may be weighted to P, .

In addition, in the rhythm-based percussion instrument sound assignment operation of the above embodiment, the assignment is allowed only when the channel keep time data CHKT is "0", but if the same data CHKT becomes smaller than a predetermined value. In some cases, the above assignment may be allowed. Furthermore, in the percussion instrument sound assignment processing based on the rhythm, similarly to the percussion instrument sound assignment processing using the pad operator 11, the sound generation of a new percussion instrument sound may be assigned to the channel with the smallest channel keep time data CHKT. . Also, in the percussion instrument sound assignment operation using the pad operator 11, the assignment is allowed only when the channel keep time data CHKT is "r□",
Alternatively, the allocation may be permitted when the data CHKT becomes smaller than a predetermined value. Further, according to the present invention, there is no need to distinguish between the percussion instrument assignment processing using the pad operator 11 and the percussion instrument sound assignment processing using the rhythm, and they may be processed in the same manner.

Further, according to the above embodiment, all the percussion instrument sounds are allocated equally, but for example, Hi-Haso oven and Bybat close are related to the same instrument and are not sounded at the same time, so in such a case, By searching l- for a channel to which this type of musical instrument sound has already been assigned, the musical instrument sound may be assigned to the same channel. Furthermore, even when the same pad operator 11 is operated, the operated operator may be assigned to the same channel as described above.

Further, in the above embodiment, at the start of sound generation, the keep time data KEEP corresponding to each percussion instrument is generated.

~K E E P' Channel keep time data CHKT initialized in 3 However, conversely, it is also possible to perform an up-run every time an interrupt signal is sent from the timer 32, and assign the generation of a new musical tone to the channel with the largest amount of the same data.In this case, , keep time table 36
Contrary to the case of the above example, an instrument with a long sounding time has small keep time data K E E P o ~ KEEP
, □ should be memorized. Further, in the above embodiment, the keep time data KEEPO-K
Although E E P , , was made different for each instrument to keep the rate of Cullen I/Down constant, this keep time data KE
It is also possible to set EP to a common value for each musical instrument and change the rate of count l to down for each musical instrument.

Further, in the above embodiments, the present invention is applied to the case where percussion instrument sounds are generated by the pad operator 11 or rhythm, but the present invention can also be applied to the case where musical sounds are generated by pressing keys on a keyboard. In such a case, if the generated musical tone is a vercussive musical tone such as a piano or a guitar, it is sufficient to start counting the waiting time count TIM according to the type of musical tone generated when a key is pressed, but if the musical tone is a vercussive musical tone such as a piano or a guitar, it is sufficient to start counting the waiting time count TIM depending on the type of musical tone generated when a key is pressed. In the case of a sustained tone type musical tone, counting of the waiting time count TIM is started from the key release.

[Brief explanation of the drawing]

FIG. 1 is a claim correspondence diagram corresponding to the configuration of the present invention described in the above claims, FIG. 2 is a block diagram showing an example of a musical tone signal generating device to which the present invention is applied, and FIGS. 3A and 3B. The figure is a memory map showing an example of the pattern memory shown in Fig. 2, Fig. 4 is a memory map showing an example of the keep time table shown in Fig. 2, and Figs. 5A and 5B are part of the register group shown in Fig. 2. A memory map showing this, and FIGS. 6 to 11 are flowcharts showing an example of a program executed by the microcomputer shown in FIG. Explanation of symbols 10...Operation panel, 11...Pad operator, 11
a... Pad switch circuit, 12... Mode operator, 13... Group operator, 12a... Mode group switch circuit, 15a... Tempo clock signal generator, 20... Musical tone signal generation Circuit, 21... Parameter memory, 22... Musical tone signal forming circuit, 24...
Sound system, 30... Macro computer section, 32... Timer, 33... Program memory,
34...CPU, 35...Pattern memory, 36.
...Keep time table, 37...Register ζri group. Applicant Nippon Musical Instruments Manufacturing Co., Ltd. Agent Patent Attorney Teru Hase (1 other person) Figure 8 Figure 9

Claims (8)

[Claims] (1) A musical tone generation instructing means capable of instructing the generation of a plurality of types of musical tones, and a plurality of musical tone signal forming channels, each of which forms a musical tone signal corresponding to the musical tone instructed by the musical tone generation instructing means. a musical tone signal forming means for outputting a musical tone; and a musical tone signal forming means for allocating the generation of the musical tone instructed by the musical tone generation instruction means to one of the plurality of musical tone signal forming channels, and controlling the formation of a musical tone signal corresponding to the instructed musical tone. and a remaining sound generation time measuring means that corresponds to each of the plurality of musical tone signal forming channels and measures the remaining time of a musical tone that is assigned to be generated by the assignment means in accordance with the type of the assigned musical tone. 2. A musical tone signal generation device comprising: allocation control means for controlling selection of an allocation channel by said allocation means in accordance with the remaining sound generation time measured by said sound generation remaining time measurement means. (2) The musical sound generation instruction means includes a plurality of operators provided corresponding to the plurality of types of musical tones, respectively, and a plurality of types of operators provided corresponding to the plurality of operators and responsive to the operation of each operator. 2. The musical tone signal generating device according to claim 1, further comprising instruction signal generating means for generating instruction signals for instructing the generation of musical tones respectively. (3) The musical sound generation instructing means comprises: a pattern memory storing pattern data for instructing the generation of musical tones in order to automatically generate the plurality of types of musical tones in a predetermined pattern; and a pattern data stored in the pattern memory. 2. The musical tone signal generating apparatus according to claim 1, further comprising pattern data reading means for sequentially reading pattern data at a predetermined tempo. (4) The allocation means includes a plurality of storage channels respectively corresponding to the plurality of musical tone signal forming channels, and data representing the musical tone instructed to be generated by the musical tone generation instruction means in accordance with control of the allocation control means. The musical tone according to claim 1, comprising: a storage control means for storing data in any one of the plurality of storage channels; and an output means for outputting the data stored in the storage channel to the musical tone signal forming means. Signal generator. (5) The remaining sound generation time measuring means is provided in correspondence with a sound generation time data memory that stores in advance a plurality of sound generation time data representing the sound generation times of the plurality of types of musical tones, respectively, and the plurality of musical tone signal forming channels. and counting means for counting the remaining time of sound generation by sequentially updating the initial value at predetermined time intervals using the sound generation time data corresponding to the musical tone assigned to be generated by the allocation means as an initial value. A musical tone signal generating device according to claim 1. (6) Controlling the allocation control means to select a channel to which generation of the musical tone instructed by the musical sound generation instruction means is allocated from among the musical tone signal forming channels for which the remaining time for sound generation is zero. 2. A musical tone signal generating apparatus according to claim 1, comprising channel selection control means. (7) The allocation means is configured to cause the allocation control means to select a channel to which generation of the musical tone instructed by the musical sound generation instruction means is allocated from among the musical tone signal forming channels whose remaining time of sound generation is less than a predetermined value. 2. A musical tone signal generating apparatus according to claim 1, comprising channel selection control means for controlling. (8) The allocation control means is configured by channel selection control means for controlling the allocation means so as to allocate generation of the musical tone instructed by the musical tone generation instruction means to the musical tone signal forming channel with the smallest remaining time of sound generation. A musical tone signal generating device according to claim 1.