JPH02198498A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To assign a kind of an effect sound to each pad, and also, to generate a desired effect sound by an operation of each pad by detecting an operation of the pad and reading out assign information from an assign information storage means, and forming and outputting an effect sound corresponding to the information. CONSTITUTION:By an assign information registering means, an operation of a key 1 is detected, and sound source information related to an effect sound corresponding to the operated key 1 is read out of a sound source kind storage means 9. This sound source information is written in an assign information storage means 10 as assign information of pads PA1 - PAM designated by a pad designating means. In this state, when an operation of the pads PA1 - PAM at the time of musical performance, assign information of its pad is read out of the assign information storage means 10, and an effect sound designated by this assign information is formed and outputted. In such a way, a desired effect sound can be assigned to each pad PA1 - PAM, and such an effect as width of an expression on the musical performance increases is obtained.

Description

[Detailed description of the invention]

"Field of Industrial Application" The present invention relates to an electronic musical instrument capable of generating melody sounds, percussion sounds, and sound effects. ``Prior Art'' Electronic musical instruments are known that are equipped with a pad in addition to a keyboard as a performance operator, and generate percussion instrument sounds in response to the operation of the pad. Furthermore, an electronic musical instrument in which the type of percussion instrument sound to be produced (for example, bibat, single, bass drum, triangle, etc.) can be programmed for each pad was proposed, for example, in Japanese Patent Application No. 332271/1983. There is. ``Problems to be Solved by the Invention'' Incidentally, there have been electronic musical instruments that generate percussion sounds by operating pads, but there have been no electronic musical instruments that can also generate sound effects by operating pads. The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an electronic musical instrument in which a type of sound effect can be assigned to each pad, and a desired sound effect can be generated by operating each pad. It is an object. "Means for Solving the Problems" The present invention provides an electronic musical instrument that includes at least one key and at least one pad as performance operators, and that forms and outputs musical tones in response to the operations of these keys. sound source type storage means for storing sound source information indicating the type of sound effect assigned to each pad; assignment information storage means for storing assignment information for each of the pads; pad designation means for designating a pad designated by the pad designation means; and said assignment information storage means which detects the operation of the written key and receives sound source information corresponding to the vaginal lock from said sound source type storage means as assignment information of the pad designated by said pad designation means. and a musical sound signal generating means that detects the operation of the pad, reads the assignment information from the assignment information storage means, and generates and outputs a sound effect corresponding to the information. It is characterized by According to the configuration, the assignment information registration means
A key operation is detected, and sound source information regarding a sound effect corresponding to the operated key is read from the sound source type storage means. This sound source information is then written into the assignment information storage means as assignment information for the pad designated by the pad designation means. When a pad operation is detected during performance, the assignment information for that pad is read from the assignment information storage means, and a sound effect specified by this assignment information is formed and output. "Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, each pad is selectively used to produce one of a percussion instrument sound that has been factory reset in advance, an assigned percussion instrument sound, and an assigned sound effect. FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention. In this figure, I is a keyboard equipped with a large number of keys, 2 is a pad operation section equipped with pads PA+ to PAM, and these constitute a performance operation section 3. Further, 4 is a program mode switch 4a.
, a pad mode switch 4b, a bold mode switch 4c, and other switch groups. Reference numeral 5 denotes a musical tone forming section, which includes a tone generator TGI which forms musical tone signals of melody tones, and a tone generator TG2 which forms musical tone signals of percussion instrument sounds and sound effects. Each musical tone signal output from the musical tone forming section 5 is synthesized by a synthesizing section 6, and the synthesized musical tone signal is supplied to a sound system 7 to generate a musical tone. 8 is a CPU that controls this entire electronic musical instrument.
(Central processing unit), 9 is a ROM (read only memory) in which control programs and various data tables are stored.
, 10 is a RAM (random access memory) in which a temporary storage area and various registers and flags are set. Further, 11 is a timer, which outputs an interrupt signal to the CPU 8 when a set time has been counted. The performance operation section 3, switch section 4, musical tone forming section 5, and C described above.
PU8, ROM9, RAM10 and timer 11 are interconnected via bus B. Next, various registers and flags set in RAM10 and various data tables stored in ROM9 will be listed and explained below. Note that representative registers and flags in RAM10 and representative data tables in ROMQ are shown in FIGS. 2 and 3, respectively. <Registers and flags in RAM10> ◇Program mode flag The contents are inverted every time the PGM nib program switch 4a is pressed. The operation mode is switched as follows according to the contents of this flag. PGM-“0”: Normal performance mode. PGM-“l”・・・Program mode. ◇Pad mode flag PMD: The contents are inverted every time the pad mode switch 4b is pressed. The operation mode is switched as follows according to the contents of this flag. PMD="0"...Pad PA, ~PAM are O
If the result is N, the pad sound source table P E T will be described later.
(i) Percussion instrument sounds or sound effects are generated according to (i=I-M). PMD="1"...Pad PA, -PA M
When is turned on, percussion instrument sounds or sound effects are generated according to the pad azai table PAST(i) (i=I-M), which will be described later. ◇Hold mode flag HLD: The contents are inverted every time the hold mode switch 4c is pressed. The formation control of percussion instrument sounds and sound effects is switched as follows in accordance with the contents of this flag. HLD-“0”: Invalidates the upper 2 bits of PEN information (described later). In this case, the musical sound signal is formed so that the sound effect attenuates according to a predetermined curve after the attack, similar to the sound of a percussion instrument. HL D-“I”...The upper two bits of PEN information (described later) are valid. ◇Sound source specification register PEN: PEN that specifies the type of sound
(Percussion effect number) An 8-bit register that stores information. The upper two bits of the PEN information specify the division of musical tones to be formed as shown below. Upper 2 bits - OO... Percussion instrument sound. (Example) Bibat, cymbal, bass drum, triangle upper 2 bits - Ol...Sound effect with persistence. (Example) Waves, brake sounds, explosion sounds Top 2 bits = 10...Sound effects that repeat attacks at predetermined time intervals. (Example) Train sound, church bell, pistol upper 2 bits - 11...Sound effects that repeat attacks at random intervals. (Example) Thunder, birds chirping, wind, river murmuring, PE
The lower 6 bits of the N information specify the detailed type of sound. ◇Pad ON flag P ON (iXi=l=M)
: A flag indicating whether or not pads PA1-PAM are in the ON state. Flag p is ON when pad PAi is ON.
(i) becomes "l". ◇Channel ON flag CHON (j) (j = 1-N)
: A flag indicating whether each sound generation channel of tone generator TG2 is in use. When the j-th sound channel is in use, cHoN (D is 1"). ◇Channel table CHPEN (j) (j = 1 to N):
A table showing the types of sound sources that are generating sound in each sound generation channel of tone generator TG2. This table stores the above-mentioned PEN information. ◇Pad assignment table p A S T (i) (i
= t~M): A table showing the types of sound sources corresponding to each of pads PA and ~PAM. The above-mentioned PE'N information is written into this table. ◇Waiting time table for each channel W T D (D(j
=1 to N) A table that stores the waiting time from one attack to the next attack for each sound generation channel when generating a sound effect that repeats a near attack. Tone generator T
When a sound effect that repeats an attack is produced in the j-th sound generation channel of G2, the waiting time is WTD (
It is stored in D. <Table in ROMQ> ◇Sound source type table Kpc(k) (k=1-NK):
In this electronic musical instrument, a percussion instrument sound or a sound effect is assigned to each key of the keyboard l. This table stores PEN information that does not indicate the type of sound assigned to each key. ◇Pad sound source table: P E T (i) (i = 1
=M): This table contains PEN information that specifies the type of percussion instrument sound or sound effect for pads PΔI to PAM.
The facts have been reset accordingly. ◇Waiting time table W T (n) (n= 1 to N P
): This table stores information specifying the generation interval of the attack part in the sound effect in correspondence with the PEN information. ◇Scaling table W T S P (n) (n=
1 to NP), this table contains a waiting time table W
A scaling parameter corresponding to each element of T (n) is stored. When generating sound effects with random attack intervals, generate a random number, multiply it by a scaling parameter, and then wait time table WT (
The waiting time until the next attack is calculated by adding the contents of n). The operation of this electronic musical instrument will be explained below. The CPU 8 of this electronic musical instrument executes a main routine whose general flow is shown in FIG. As shown in this figure, when the electronic musical instrument is powered on, the CPU executes initialization processing (step 81), thereby clearing the registers and flags in RAM10. And the CPU
8 repeats the key processing (step S2), the pad processing (step S3), and the switch processing (step S4.). Here, if the keyboard 1 is operated and a key ON event is detected, the keyboard processing in step S2
The N processing routine is activated. Further, if a ghee OFF event is detected, the ghee OFF processing routine shown in FIG. 6 is activated. Further, when the pads PAI to PAM are operated, in step S3, the pad ON processing routine shown in FIG. 7 or the pad OFF processing routine shown in FIG. 8 is activated. Further, when each switch of the switch section 4 is pressed, in step S4, a processing routine corresponding to each switch is activated and executed as described below.

[Processing for switch operation]

When the program mode switch 4a is pressed, the program mode switch processing routine of FIG. 9 is activated. First, in step Sll, the CPU 8 inverts the contents of the program mode flag PGM in the RAM l0. Next, in step S12, the CPU 8 outputs a key OFF signal to all sound generation channels of the tone generator TGI. As a result, the melody sound is stopped. Next, when the process proceeds to step S13, the CPU 8 outputs the tone generator T.
A sound OFF signal is output to all sound generation channels of G2. As a result, the percussion instrument sounds and sound effects are stopped. Then, the processing in this routine ends, and the process returns to the main routine (FIG. 4) from which it was started. On the other hand, if the pad mode switch 4b is pressed, the first
The pad mode switch processing routine shown in FIG. 0 is activated. First, in step S21, the contents of the pad mode flag PGM in RAM10 are inverted. Next step S
Proceeding to step 22, it is determined whether the contents of the hold mode flag HLD are "1" or not. And the judgment result is rY E
In the case of SJ, the process returns to the main routine, and if the judgment result is "NO", the process advances to step S23, where a sound OFF signal is sent to the tone generator TG2 to stop the musical tone, and the process returns to the main routine. Here, when the hold mode flag HLD is '0'', the sound effect also attenuates according to a predetermined attenuation curve (this operation will be described later), similar to the percussion instrument sound, so the sound OF
There is no need to send an F signal. Therefore, this routine executes step S23 only when the bold mode flag HLD is "I". When the bold mode switch 4C is pressed, the bold mode switch processing routine shown in FIG. 11 is activated. First, in step S31, the contents of the hold flag HLD are inverted. Next, proceeding to step S32, the sound is turned OFF on all sound generation channels of tone generator TG2.
Sends a signal to stop the musical tone. Then step S33
, the waiting time table W T D (j) (j=
Write data “0” to 1 to N). Next, the process advances to step S34, where the channel table CHON (jXj
= 1-N). Then, return to the main routine. In this way, depending on the operation of the switch section 4, the flag PG
M, PMD and HI, D are switched, thereby switching the operating mode of this electronic musical instrument. below,
Operations in the program mode and normal performance mode in which desired percussion instrument sounds and sound effects are assigned to pads PA, -PA'M will be explained.

[Program mode]

As mentioned above, when the performer presses the program mode switch 4
By pressing a and setting the program mode flag PGM to "l", the operating mode of the CPU 8 becomes the program mode. In this mode, when the player presses the lock on the keyboard l, the key ON processing routine shown in FIG. 5 is activated in step S2 of the main routine shown in FIG. First, CPU8
stores the key code of the key in which the key ON event has occurred on the keyboard 1 in the key code buffer KCD (step S101). Next, when the process advances to step 5102, the key ON flag KO
Set "l" to H. Next, in step 5103, it is determined whether the program mode flag PGM is "I". In this case, the judgment result is "YESJ", and the process proceeds to step 5104-.When proceeding to step 5104, C
PU8 is the sound source type table KP C (k
) (k=1-NK) in the PEN information stored in
Data KPC (KCD) corresponding to key code KCD is read and stored in sound source designation register PEH in RAM1O. Next, proceeding to step 5105, P in FIG.
The E sound routine is started, and as a result, the register PEN
A percussion instrument sound or a sound effect corresponding to the PEN information in the tone generator TG2 is generated. The detailed contents of this PE sounding routine will be described later when the "normal performance mode" is explained. Next, when the process advances to step 5107, the pad ON flag P
ON (i) (i = 1-M) is "1" and the pad mode flag PMD is "1". If the judgment result is "NO", Return to main routine. On the other hand, at this point, a certain pad P
When the pad ON event of A i is detected, the pad ON flag P ON (i) is "l". In addition, if this state exists and the pad mode flag PMD is set to "l", the determination result at step 8106 is YESJ, and step 5
Proceed to step 107. Proceeding to step 5107, the CPU 8 obtains the number i of the pad whose pad mode flag P ON (i) is "l" and stores the memory area PA in the node assignment table corresponding to this number i. S T
Write PEN information in (i). Then, the process returns to the main routine=16. Next, in this program mode, key O of keyboard 1
If an FF event is detected, the key OFF processing routine shown in FIG. 6 is activated via step S2 of the main routine. First, proceed to step 5201, press the key
Buffer the key code of the key with the F event BtJ
Import into F. Next, the process proceeds to step 5202, where it is determined whether the program mode flag PGM is "1". In this case, the determination result is rY E S J, and the process advances to step 5203 to determine whether there are any other keys in the ON state at this point. If the determination result is rNOJ, the process advances to step 5204 and the key ON flag is set to KO.
Clear N and return to the main routine. On the other hand, if the judgment result is rYEsJ, step 5205
Proceed to , search for the key that was turned ON the latest up to this point, and obtain the key code KCD for that key. Further, in this case, the key ON flag KON is not cleared. In other words, as long as any key is ON, the key O
The N flag KON holds "1", and the key code corresponding to the last key turned ON among the keys currently being pressed is held in the KCD. In this case, the pad will be assigned by the bat ON event, which will be described later. When the processing of this routine is finished, the process returns to the main routine. On the other hand, in this program mode, pads PAI~
When any one of the PAMs is turned on, the pad ON processing routine shown in FIG. 7 is activated in step S3 of the main routine. First, when proceeding to step 5301,
The CPU 8 obtains the number i of the pad PA i that is in the ON state. Next, the process advances to step 5302, and the pad ON flag p ON (i) corresponding to that pad number 1 is set to "I".
" is set. Next, in step 5303, it is determined whether the program mode flag PGM is "1",
In this case, the determination result is rY E S J, and the process proceeds to step 5304. Proceeding to step 5304, the key O
It is determined whether the N flag KON is "l" or not. If the determination result is rY E S J, that is, if the ON key of keyboard 1 is detected at this point, the process advances to step 5305. Proceeding to step 5305, the contents of the key code KCD are referred to and the P stored in the sound source type table KPC (kXk=1 to NK) in the ROM 9 is selected.
Data KP corresponding to key code KCD in EN information
C (KCD) is stored in register PEH. Next, the process advances to step 8306, where the pad assignment table P A
Among S T (i) (i=1 to M), the storage area P A S corresponding to the pad where the pad ON event was detected
Write the PEN information in the register PEN to T (i). Then, return to the main routine. On the other hand, if the key ON flag KON is '0', there is no suppression of the assigned key, so the determination result in step 5303 is rNOJ, and step 5307 of this routine
The following processing is performed, and as a result, the tone generator TG
At step 2, percussion sounds or sound effects are generated. Then, return to the main routine. Note that the processing after step 5307 will be explained in the "normal performance mode", so the explanation will be omitted here to avoid duplication. Next, in the program mode, when a pad OFF event is detected, the pad OFF processing routine shown in FIG. 8 is activated. In this routine, the number i of the pad that is turned off is detected (step 5401), and then the pad ON flag (1) is cleared. Therefore, pad PA
After i is turned ON (pad ON processing routine starts),
The pad ON flag P ON (i) holds "1" until it is turned OFF (pad OFF routine activation). In this way, in the program mode, a key ON event is detected on keyboard 1, and pads PA, ~P
When an AM pad ON event is detected, the PEN information (read from the KPC table) corresponding to the turned ON key is added to the pad assignment table P A S T (i) corresponding to the turned ON pad. things) are assigned. Also, this pad assignment table P
The process of writing PEN information to AST(i) is included in both the key ON processing routine and the pad ON processing routine. Therefore, no matter which routine is started first, the pad assignment table P A S T
(i) PEN information is normally assigned.

[Normal performance mode]

When the program mode switch 4a is pressed to set the program mode flag PGM to "0", the operating mode becomes the normal performance mode. The operation of the CPU 8 when a keyboard operation is performed and a pad operation is performed in this mode will be described below. <Operation when there is a keyboard operation> When keyboard l is operated and a key ON event is detected,
In step S2 of the main routine, the key ON processing routine shown in FIG. 5 is activated. In this case, step 5
At IOI, the key code KCD of the key with the key ON event is fetched, and at step 5102, the key ON flag KON is set to l''.Then, the judgment result at step 5IO3 is "NO", and step 81
Proceed to 08. Proceeding to step 5108, the number j of an empty sound generation channel in the tone generator TGI is determined. Next, the process proceeds to step 5109, where the key code K is input to the j-th sound generation channel of the tone generator TGI.
Sends CD and key ON signals. As a result, the tone generator TGI generates a melody tone corresponding to the key code KCD. Then, return to the main routine. On the other hand, when the key OFF event of keyboard l is detected, the key OFF event of FIG.
The F processing routine is activated. First, step 5201
At , the key code of the key with the key OFF' event is taken into the buffer B UF. Next, the determination result in step 5202 is "NO", and step 52
Proceeding to step 06, a search is made for a tone generating channel that is currently generating a tone in the tone generator TGl and is generating a musical tone that matches the key code in the buffer BUF. Next, the process proceeds to step 5207, where it is determined whether or not the corresponding sound generation channel exists, and if rNOJ, the process returns to the main routine. On the other hand, in the case of rY E S J, that is, if there is a sound generation channel that is generating a musical tone that matches the key code of the buffer BUF, a key OFF signal is sent to that sound generation channel (step 5208). As a result, the tone generator TGI stops producing the melody tone corresponding to the key that has been turned off. <Operation when a pad is operated> When the pads PA, -PAM are operated and a pad ON event is detected, the pad ON processing routine shown in FIG. 7 is activated in step S3 of the main routine. In this case, in step 5301, the number i of the pad where the pad O, N event occurred is determined, and in step 830
．． 2, the pad ON flag P ON (i)
Set. Note that this pad ON flag P ON
(i) holds "B" until the pad PAi is turned off and the pad OFF processing routine (FIG. 8) is started.
J, the process advances to step 5307, and it is determined whether the pad mode flag PMD is "1". If the determination result is rY E S J, the process advances to step 5308;
If “NO”, the process advances to step 5309. Next, when the process advances to step 8308, the pad assignment table PA S
Write data PAST(i) corresponding to number i in T (iXi=1-M) to register PEN,
Proceed to step 5310. On the other hand, when the process proceeds to step 5309, the pad sound source table PET (iXi=1~
Data P A S T (i
) is written to register PEH, and the process proceeds to step 5310. Then, in step 5310, the PE sound generation routine shown in FIG. 12 is activated. The processing flow of the PE sound generation routine will be explained below. First, in step 5501, it is determined whether the upper two bits of the PEN information are "00". If the determination result is rYEsJ, that is, if the musical sound to be generated is a percussion sound, the process advances to step 5502. Proceeding to step 5502, the number j of the vacant sound generation channel in tone generator TG2 is obtained and the corresponding channel ON flag CHON (D is set.Next, the process proceeds to step 5503, where the number j of the vacant sound generation channel in tone generator TG2 is set. The sound source data and sound ON signal corresponding to the PEN information are transmitted.As a result, the PEN
A percussion instrument sound corresponding to the N information is generated. Next, the process advances to step 5504, where the channel ON flag CHON(j
) and return to the startup source. Next, if the upper two bits of the PEN information are '0 bits', that is, if the musical sound to be generated is a sustained sound effect, the judgment result in step 5501 is '1NO';
Next, the determination result in step 5505 is rYEs.
J, and the process proceeds to step 8506. Then, it is determined whether the hold mode flag HLD is "1". Then, if the judgment result is rNOJ, step 5507
Then, the second decay rate of the envelope corresponding to the PEN information is obtained and taken into the buffer 2DR. Next, the process proceeds to step 950H, where the number j of an empty sound generation channel in the tone generator TG2 is determined and the corresponding channel ON flag cr-roN(j) is set. Next, the process advances to step 5509, and the sound source data corresponding to the PEN information, the information stored in the buffer 2DR, and the sound ON signal are sent to the j-th sound generation channel of the tone generator TG2. As a result, a sound effect corresponding to the PEN information is generated. In this case, as shown in FIG. 13, the envelope of the generated sound effect rises at a predetermined attack rate AR, then falls at the first decay rate IDR, and thereafter falls at the second decay rate indicated by the buffer 2DR. The decay rate is attenuated at a second decay rate of 1.times., that is, a second decay rate corresponding to the PEN information. Therefore, the sound effect generated by the tone generator '1'G2 is a non-persistent sound effect as in the case of a percussion instrument. Processing then proceeds to step 5510, where the channel ON flag CI-i
ON(D is cleared and the process returns to the starting source. On the other hand, if the bold flag I(LD is "BI°", the judgment result in step 8506 becomes rYEsJ and the process proceeds to step 5511. Then, the buffer 2DR Data "O" is stored in the channel table CHP E N (k) (j-1 to
It is determined whether or not PEN information is included in N). Then, the judgment result is rY E S j
In this case, the process advances to step 5513 to fetch the number j of the corresponding tone generation channel, then proceeds to step 5514 to send the Zaunt OFF signal to the j-th tone generation channel of tone generator TG2 to mute the musical tone, and then turns the channel ON. Clear the flag cr-ION (j) (step 5510). This is the first time the pad is turned on
This corresponds to the process of muting the persistent sound effect generated by the second pad ON event. Note that the process of generating a sustained sound effect by this first para F' ON event will be described later. When step 5510 ends, the process returns to the starting point. On the other hand, if the determination result in step 5512 is "NO",
That is, the channel table cr-rpEN(ko)(j
-1 to N) does not contain anything that matches the PEN information, double steps 8508 to 5510
Execute to generate a sound effect and return to the startup source. However, in this case, since the content of buffer 2DR is "0", the envelope of the sound effect generated by tone generator TG2 has a persistence in the second decay part, as shown in Figure 13. Become something. This corresponds to the process of generating a persistent sound effect in response to the first pad ON event described above. Next, the upper two bits of the PEN information are "10" or "
11”, step S501 Onibi 5505
The process then proceeds to step 5515. Then, it is determined whether the hold mode flag ILD is "I" or not, and if the determination result is rNOJ, the process advances to step 5516. Proceeding to step 5516, the number of the vacant sound generation channel in tone generator TG2 is determined. Next, the process proceeds to step 5517, where the j-th tone generator TG2
The sound source data and sound ON signal corresponding to the PEN information are sent to the th sound generation channel. As a result, PEN
A percussion instrument sound corresponding to the information is generated. Furthermore, the storage area CHPEN(j
) stores PEN information. Next, the process proceeds to step 5518, and when the process proceeds to wTD (starts the D setting routine. Step S60 of this routine) in FIG. 14, the CPU 8 updates the PEN information stored in the storage area CHPEN(j) of the channel table and reads the waiting time information WT (PEN) corresponding to the PEN information from the waiting time table W T (n) (n=t − N ) in the ROM 9 and stores it in the buffer WBUF. Next, proceed to step 5602. , determines whether the second bit of the PEN information is “1” or not.Then, the determination result is rN
In the case of OJ, that is, the upper two bits of PEN information are “
10", the process advances to step 5603, and the buffer WB
The waiting time information in the UF is written into the storage area W T D (j) of the waiting time table corresponding to the jth sounding channel. Then, the process returns to the starting point of this routine (in this case, the PE sound generation routine). Meanwhile, step 560
If the judgment result in step 2 is rYEsJ, then PEN
If the upper two bits of the information are “11”, step 56
Proceeding to step 04, a random number is generated and stored in the buffer RDM. Then, the process proceeds to step 5605, where waiting time information WT (PEN), scaling parameter WTSP (PEN), and random number R from within the ROMQ corresponding to the PEN information are sent.
The waiting time is calculated from the DM according to the following formula (1), and the storage area W corresponding to the sound generation channel J of the waiting time table is calculated.
Write in T D (j). WTD(j)←WT(PEN) +RDM*WTSP(PEN)...(1) Then, the process returns to the starting source (in this case, the PE sound generation routine). Then, the process proceeds to step 9519 of the PE sound generation routine, sets the channel ON flag CHON, and
Returns to the pad ON processing routine that was the starting point. On the other hand, if the determination result in step 5515 of the PE sound generation routine is rYEsJ, that is, if the hold mode flag HLD is "l", the process proceeds to step 5520, and the information in the channel table CHP E N (j) (jl-N) is It is determined whether or not the information contains information that matches the PEN information. If the determination result is rNOJ, execute steps 9516 to 5519 described above and turn the pad ON.
Return to processing routine. Further, if the determination result in step 5520 is YESJ, the channel ON flag CHON(j) of the corresponding channel is cleared. Now, in this electronic musical instrument, the timer 11 outputs an interrupt signal to the CPU 8 at regular time intervals. As a result, the CPU 8 interrupts the process currently being executed and starts the timer interrupt routine shown in FIG. First, when proceeding to step 5701, the hold mode flag H
It is determined whether LD is "l" or not. If the determination result is rNOJ, the routine exits and the interrupted processing is resumed. On the other hand, if the determination result in step 5701 is rY E S J, the process advances to step 5702 and the variable j is initialized to 1. Next, the process advances to step 5703, where the channel ON flag CHO is set.
It is determined whether N (j) is "1" or not. here,
The state where the channel ON flag CHON(j) = 1 is
This indicates that a sound effect that repeats an attack is assigned to the channel. And the judgment result is rNOJ
If "YES", the process advances to step 8708; if "YES", the process advances to step 5704. Next, when the process proceeds to step S70'4, the contents WTD(j) of the waiting time table corresponding to the j-th sound generation channel of tone generator TG2 are
Decrement. Then, in step S705, it is determined whether the table content WTD(j) has become "0". And the judgment result is "NO"
If so, proceed to step 9708; if YESJ, proceed to step 8706. Next, in step 8706, a sound ON signal is sent to the jth sound generation channel of the tone generator. As a result, the corresponding pronunciation channel (
At number j), the sound effect being sounded is attacked again. Next, the process proceeds to step 5707, where the above-mentioned W T D
(j) Activate the setting routine, thereby calculating the waiting time until the next attack in the sound generation channel (number j), and updating the contents of the waiting time table WTD (D) according to the calculation result. As can be seen from the above explanation, the content of the waiting time table WTD (D is the PEN information corresponding to the pronunciation channel (number j), that is, the content of the channel table CHp E N (j
) if the second bit is "0", it will always be a constant value corresponding to the PEN information, while if the second bit is "1", it will be a value according to the random number generated at that time. Next, in step 8708, variable j is incremented. Then, in step 5709, it is determined whether the variable j exceeds the maximum value N of the sound generation channel number, and if rNOJ, the process returns to step 5703, and if "YES", the timer interrupt routine is terminated and the suspended process is continued. resume. As mentioned above, the hold mode flag HLD is “l”
When , the pad to which PEN information whose upper two bits are "10" or "ll" is assigned (for example, this pad is pad A) is turned ON, and the pad ON event of that PEN information is the first , the twelfth
The PE pronunciation runon in the diagram is from steps 8516 to 5519.
is executed and the assigned pronunciation channel (jth)
PEN information is registered in , and channel ON flag CHON (j) is set. Then, when the channel ON flag CHON(j) is set in this way,
Thereafter, in the relevant sound generation channel (number j), the timer interrupt handling routine is activated and the waiting time WT D (j)
The re-attack of the sound effect is repeated every time the value reaches rOJ. In this state, it is assumed that the aforementioned putt A is turned on again. In this case, PE pronunciation runon step 552
The determination result of 0 is rY E S J, and the process proceeds to step 5521. And PEN corresponding to pad A
Find the number j of the pronunciation channel that is producing the information sound effect (
Step 5521), channel on flag CHON (
j) is cleared and the process returns to step S522) to return to the pad-on processing routine. As a result, from now on, the sound effect corresponding to pad A is stopped in the sound generation channel (number J). On top of this, sea urchin, ON
The upper two bits of the PEN information of the pad that has been set are '10' or '11', and the bold mode flag
If L D is "'1", the first O of the pad
At N, a sound effect that repeats the attack is generated in the tone generator, and when the pad is turned on again, the sound effect is stopped. "Effects of the Invention" As explained above, according to the present invention, it is possible to realize an electronic musical instrument in which a desired sound effect can be assigned to each bat, which has the effect of increasing the range of musical expression. can get.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a diagram showing the renostar and flag configuration in RAM10 in the same embodiment, and FIG. Figures 4 to 12 and 14 to 15 are diagrams showing the table structure, Figures 4 to 12 and Figures 14 to 15 are 70-diameter diagrams showing the operation of the embodiment, and Figure 13 is a diagram showing the envelope waveform of the embodiment. 1...Keyboard, 2...Pad operation section, P A
+~PAM...Pad, 3...Performance operation section, 4
...Switch section, 5...Musical tone forming section, 8
...CPU, 9...ROM510...R
AM, 11...Timer.

Claims (1)

[Scope of Claims] An electronic musical instrument that includes at least one key and at least one pad as performance operators, and that forms and outputs musical tones in response to the operation of these keys, which are assigned to each of the keys. sound source type storage means that stores sound source information indicating the type of sound effect that has been created; assignment information storage means that stores assignment information for each of the pads; pad designation means that designates a desired pad among the pads; Assignment information registration means for detecting a key operation and writing sound source information corresponding to the key from the sound source type storage means into the assignment information storage means as assignment information for the pad specified by the pad designation means; 1. An electronic musical instrument comprising musical tone signal generating means for detecting an operation of the electronic musical instrument, reading out the assignment information from the assignment information storage means, and forming and outputting a sound effect corresponding to the information.