JPH0731277Y2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an electronic musical instrument having a function of generating rhythm sounds.

"Prior art" Automatic rhythm performance with a rhythm sound source that generates musical tone signals for rhythm instruments such as bass drums, snare drums, cymbals, and a rhythm pattern memory that stores rhythm pattern information such as waltz, rumba, and march. Possible electronic musical instruments are known. In addition to the automatic rhythm playing function, an electronic musical instrument is known which is provided with a rhythm sound operator called a pad, and a rhythm sound is generated by a player hitting the pad. An electronic musical instrument of this kind is disclosed, for example, in Japanese Utility Model Publication No. 59-18471. Furthermore, an electronic musical instrument with a so-called hold mode function is known. According to this type of electronic musical instrument, when a musical tone is generated by operating a pad or a keyboard, the musical tone information can be retained, so that the tone can be maintained even after the pad or the keyboard is turned off.

"Problems to be solved by the invention" By the way, in the above-described conventional electronic musical instrument with the hold mode function, when the generated musical sound is an attenuated sound, the musical sound is attenuated according to a predetermined envelope waveform. There is a problem that the pronunciation is not maintained even if the musical tone information is retained.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an electronic musical instrument capable of sustaining a sound even after the operation of the musical performance operator even with respect to a damping sound.

"Means for Solving the Problem" The electronic musical instrument according to the present invention has a plurality of performance operators (PA0 in FIG. 2) to which a plurality of tones which are divided into a first group and a second group are assigned.
To 7), operation state detection means (steps SA30 and SA40 in FIG. 4) for detecting the operation state of the performance operator, tempo designation means (switch circuit 6 in FIG. 1) for specifying the tempo of automatic performance, When a tone color assigned by the key-depression state detecting means detects an operation of a performance operator belonging to the first group, a musical tone of the tone color is generated, and the performance operator is changed to a non-operation state. When the key is detected, the generation of the musical tone is stopped (steps SA34 and SA42 in FIG. 4), and the tone color assigned by the key depression state detecting means detects the operation of the performance operator belonging to the second group. At this point, the musical tone generating means (FIG. 4) starts generating intermittent musical tones at time intervals corresponding to the tempo designated by the tempo designating means.
SA34, and SB5 to 8) in Fig. 5).

[Operation] According to the first invention, when the performance operator is turned on while the holding command is input, the count value of the counting means at that time and the musical tone information corresponding to the operator are displayed. It is stored in the holding means. Then, the tone generation control means generates a musical tone corresponding to the operation of the performance operator, and the count value of the count means coincides with the count value stored in the hold means for the period in which the hold command is input. Each time a tone is played, a tone according to the tone information is repeatedly generated. Further, according to the second invention, while the holding command is input, the musical tone of the first section is generated by being turned on by the performance operating element and stopped by being turned off. The musical tones of the second category continue to be produced even when the performance operator is turned off. Further, the musical tones belonging to the first section are sounded each time the count value of the counting means matches the count value stored in the holding means, as in the case of the first invention.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the structure of an electronic rhythm musical instrument according to an embodiment of the present invention. In this figure, 1 is a CPU (central processing unit) for controlling the entire electronic rhythm musical instrument, and 2 is a program memory in which a control program is stored. Reference numeral 3 is a register group used by the CPU 1 for temporarily storing control data. 4 is a rhythm pattern memory in which rhythm patterns for automatic rhythm performance are stored, and 5 is a CPU 1 which generates a tempo clock at predetermined time intervals.
Is a tempo clock generator which is supplied as an interrupt request signal. The tempo clock generator 5 comprises an oscillator and a frequency divider for dividing the output of the oscillator. Then, when a performance speed operator (not shown) provided on the operation panel of the instrument body inputs a performance speed, data corresponding to the performance speed is input from the CPU 1 to the frequency divider of the tempo clock generator 5. Supplied as. In this way, the tempo clock generator 5 obtains a tempo clock having a frequency according to the performance speed desired by the performer.

Reference numeral 6 denotes a switch circuit for detecting the operation state (on / off) of various operators provided in this electronic rhythm musical instrument. With this electronic rhythm instrument, you can turn on / off a pad (described later).
The operation of turning off or the operation of another operator is detected by the CPU 1 through the switch circuit 6, and the CPU 1 performs the musical sound generation control corresponding to the operation. TG is a tone generator that creates musical tones. The tone signal formed by this ton generator TG is
It is generated as a musical sound through a sound system (not shown). Then, the CPU 1, the program memory 2, the register group 3, the rhythm pattern memory 4, the tempo clock generator 5, the switch circuit 6, and the tone register TG described above.
Are interconnected by a bus B.

FIG. 2 illustrates a part of an operation panel of the electronic rhythm musical instrument. In the figure, PA _{0 to} PA ₇ are pads, and a rhythm sound is generated by the performer hitting these pads PA _{0 to} PA ₇ . The operation of generating a rhythm sound by this pad operation will be described later. TNSW _{0 to} TNSW ₆₃
Are tone switches, and these switches TNSW _{0 to} TNSW
By turning on any of _63, the corresponding tone color type is set. SWH is a hold switch for setting and releasing the hold mode, and RHY is a rhythm start / stop switch for setting and releasing the automatic rhythm mode.

Next, various registers constituting the register group 3 in FIG.
Representative flags and various control tables stored in a ROM (read only memory) not shown will be listed and described.

◇ Rhythm on timing register MEM (n) (n = 0 to 3
1): In this electronic rhythm musical instrument, one bar is divided into 32 sections, and musical tone generation control is performed for each section. The rhythm on timing register MEM (n) (n = 0 to 31) stores the sounding timing of the rhythm sound in the hold mode, and has a structure shown in FIG. That is, in the hold mode, when the i-th pad is turned on in the j-th section of one bar, "1" is set to the i-th bit of MEM (j). .

◇ Voice mode table TNMOD (k) (k = 0 to 63): This electronic rhythm instrument has a total of 64 sounds including waves, police car sirens, continuous sounds such as drum rolls, explosive sounds, pistol sounds, and decay sounds such as bass drum sounds. Different kinds of sounds are produced. Then, the sounds generated by the above-described tone color switches TNSW _{0 to} TNSW ₆₃ are designated. This tone mode register TNMOD
(K) (k = 0 to 63) is a table stored in a ROM (not shown), and in each data in the table, the tone color corresponding to each of the tone color switches TNSW _{0 to} TNSW ₆₃ is a continuous tone. Or attenuated sound. Here, when the sound corresponding to the switch TNSW k is a continuous sound, TNMOD (k) = “0”, and when it is a damped sound, TNMOD (k) = “1”.

-Tone color register ASSBUF (i) (i = 0 to 7): The tone generator TG has eight tone generation channels. The tone color register ASSBUF (i) is set with the tone color number (one of 0 to 63) of the tone generated in the i-th tone generation channel.

◇ Mode register MDREG (i) (i = 0 to 7): This mode register MDREG (i) (i = 0 to 7) indicates that the sound assigned to each sound generation channel of the tone generator TG is a continuous sound or a attenuated sound. Is a register that stores whether or not
MDREG (i) = "0" if the sound assigned to the i-th sound generation channel is a continuous sound, MDREG if it is a attenuated sound
(I) is set to "1".

◇ Tempo clock count register CLK: This tempo clock count register CLK stores the count value of the tempo clock generated from the tempo clock generator 5. In addition, this register CLK has a 5-bit configuration,
The range of the count value is "0" to "31".
Therefore, if the count is further advanced from "31". The next count value becomes "0".

◇ Hold flag HLD: When this hold flag HLD is “0”, a rhythm sound is generated only when the pads PA _{0 to} PA ₇ are hit. In addition, in the case of "1", this electronic rhythm musical instrument is in hold mode, after hitting the pad PA ₀ ~PA ₇ are also sustained rhythm sound. The hold flag HLD is inverted "0" / "1" every time the hold switch SWH is pressed.

◇ Rhythm start / stop flag RUN: This flag RUN
When is set to “1”, this electronic rhythm instrument enters automatic rhythm mode. Also, this flag RUN is "0" / every time the rhythm start / stop switch SWR is pressed.
Invert “1”.

The operation of this electronic rhythm musical instrument will be described below. When the power is turned on, the CPU 1 of this electronic rhythm musical instrument executes the main routine whose general flow is shown in FIG. First, the CPU1 executes the initial setting process (step SA
1), whereby the register group 3 is initialized. Here, the rhythm start / stop flag RUN and the hold flag HLD are set to "0".

In step SA10, it is determined whether the switch circuit 6 has detected an on event of the rhythm start / stop switch SWR. Then, if the determination result is "NO", the flow proceeds to step SA20, and it is determined whether or not an on event of the hold switch SWH is detected. If the determination result is "NO", the flow proceeds to step SA30, and pads PA _{0 to} P
It is determined whether any of the on-events in A ₇ is detected. If the determination result is "NO", step SA
Proceeding to 40, it is determined whether or not an off event of any of the pads PA _{0 to} PA ₇ is detected. And the judgment result is "N
If “O”, proceed to step SA50 and select rhythm,
It is determined whether or not there is an on / off event of another operator such as a volume control, the tone generation control is performed according to the determination result, and the process returns to step SA10. In this electronic rhythm musical instrument, the operation of each operator is detected in this manner, and musical tone generation control is performed.

<Processing for Operating Rhythm Start / Stop Switch SWR> When the rhythm start / stop switch SWR is pressed by the performer, the determination result of step SA10 becomes “YES” and the process proceeds to step SA11. Then, the content of the flag RUN is reversed.

Immediately after the power is turned on, the flag RUN is "0". Therefore, when this inversion processing is executed, RUN becomes "1" and the automatic rhythm mode is set. Then proceed to step SA12,
Determine whether the flag RUN is "1". Then, if the determination result is “YES”, the process proceeds to step SA13. Then, the tempo clock count register CLK is cleared to "0" and the process proceeds to step SA20.

Next, it is assumed that the player presses the rhythm start / stop switch SWR when the flag RUN is "1". In this case, go to step SA11 via step SA10,
The flag RUN is set to "0". Then, the determination result of step SA12 is "NO", and the process proceeds to step SA14. Then, the tone generator TG determines the sound generation state, and turns off all the sounding channels that are sounding at that time, except for the sounding sound corresponding to the operation of the pads PA _{0 to} PA _7. . Next, in step SA15, all the rhythm on timing registers MEM (n) (n = 0 to 31) are set to "0" and the hold flag HLD is set to "0". That is, in this electronic rhythm musical instrument, when the automatic rhythm mode is released, the hold mode is automatically released. Then, when step SA15 ends, the process proceeds to step SA20.

<Process for Operation of Hold Switch SWH> When the hold switch SWH is pressed, the determination result of step SA20 is “YES”, and the process proceeds to step SA21. Then, the contents of the hold flag HLD are inverted. Next, in step SA22, it is determined whether or not the hold flag HLD is "0". If the result of the determination is "NO", then the process proceeds to step SA30.
On the other hand, if the result of the determination is "YES", then the operation proceeds to step SA23. Then, among the sounding channels being sounded at that point, all channels are turned off except for the sounding channel corresponding to the operation of the pads PA _{0 to} PA ₇ and the sounding channel for the automatic rhythm sound. Next, in step SA24, all the rhythm timing registers MEM (n) (n = 0 to 31) are set to "0", and the process proceeds to step SA30. In this way, when the hold switch SWH is pressed, the hold flag HLD is inverted. Further, when the hold flag HLD is reset to "0" by the inversion process, the mute process in the tone generator TG and the all clear of the rhythm on timing register MEM (n) (n = 0 to 31) are executed.

<Process in Automatic Rhythm Mode> In FIG. 1, when the tempo clock is generated from the tempo clock generator 5 and supplied as an interrupt signal to the CPU1, the CPU1 causes the tempo clock allocation shown in FIG. Run the built-in routine. First, in step SB1, it is determined whether the rhythm start / stop flag RUN is "1", that is, whether the rhythm mode is automatic. Then, if the determination result is "YES", the process proceeds to step SB2. And
Tempo clock count register CLK at that time
The address corresponding to the value of is supplied to the rhythm pattern memory 4, and the rhythm pattern output from the rhythm pattern memory 4 is sent to the sound generation channel of the tone generator TG.
Performs automatic rhythm sound generation processing. Next, in step SB3, it is determined whether or not the hold flag HLD is "1", that is, whether or not the hold mode is set. Then, if the determination result is "NO", the process proceeds to step SB9, the tempo clock count register CLK is incremented, and the process returns to the main routine of FIG. The processing in the hold mode will be described later. As described above, in the case of the automatic rhythm mode, each time the tempo clock is generated, the rhythm pattern corresponding to the value of the tempo clock count register CLK is read out, and the corresponding rhythm sound is generated from the tone generator TG. , Register CLK is incremented. On the other hand, when the rhythm start / stop flag RUN is "0", the determination result of step SBI is "NO", and the process returns to the main routine of FIG. 4 without performing any processing.

<Processing for Pad Operation> When the performer hits one of the pads PA0 to PA7 and a switch-on event is detected from the switch circuit 6, the result of the determination at step SA30 in FIG. 4 is “YES”, and step SA3
Go to 1. At this point, the tone color switches TNSW _{0 to} TN
Determine whether any of SW ₆₃ is in ON state. If the determination result is "YES", step SA32
Proceed to. When the number of the pad that has been turned on is i, the tone color register ASSBUF (i) is set to the tone color number k corresponding to the tone color switch in the ON state, and the tone color parameter is set to the i-th sound of the tone generator TG. Send to channel. Then proceed to step SA33, where step SA
Tone mode table TN corresponding to tone number k in 32
The value of MOD (k) is set in the mode register MDREG (i) corresponding to the pad number i.

Then, in step SA34, a key-on signal is sent to the i-th tone generation channel of the tone generator TG. As a result, the rhythm sound of the tone color corresponding to the tone color number k is produced in the tone generation channel i. If the determination result of step SA31 is "NO", step SA32 is not executed,
The rhythm sound is generated in accordance with the tone color parameter set in the sound generation channel i before that. Next, in step SA35, it is determined whether or not the hold flag HLD is "1", that is, whether or not the hold mode is set. Then, if the determination result is "NO", the flow proceeds to step SA40. On the other hand, if the result of the determination is "YES", then the operation proceeds to step SA36.
Then, the rhythm on timing register MEM (n) (n
= 0 to 31), tempo clock count register CL
"1" is set to the i-th bit of the memory area MEM (CLK) corresponding to the count value of K. Thus, in the hold mode, when any of the pads PA _{0 to} PA ₇ is turned on, the timing at which the pad is turned on is stored.

When a pad-off event is detected next, step SA40
The determination result of is YES, and the process proceeds to step SA41, and it is determined whether or not the hold switch HLD is "0". And
When the determination result is "YES", that is, when the hold mode is not set, the tone generation channel i in the tone generator TG
The key-on signal of (i is the number of the pad that has been turned off) is released, and the mute processing of the sounding channel i is performed. Then, the process proceeds to step SO50. On the other hand, the judgment result in step SA41 is "NO".
If, that is, in the hold mode, step SA
Without executing 42, proceed to step SA50. That is, in the hold mode, when the pad PA i is turned on and the sound generation processing of the sound generation channel i is performed, thereafter, the pad PA i is generated.
Even if is turned off, the key-on signal of the sounding channel i is not released. Then, when the sound assigned to the sounding channel i is a continuous sound (when MDREG (i) = “0”), sounding is continued thereafter. Also, the pronunciation channel i
If the sound assigned to is a decay sound (MDREG (i)
= “1”), the sound produced in the pronunciation channel i is attenuated according to a predetermined envelope.

<Processing in Automatic Rhythm Mode and Hold Mode> In this case, when the routine of FIG. 5 is started by the tempo clock interrupt, step SB2 is executed via step SB1 A rhythm sound is produced, and then the result of the determination in step SB3 is "YES", and the process proceeds to step SB4. Then, the tone generation channel number i is initialized to "0".

Next, proceeding to step SB5, the i-th bit of the rhythm on-timing register MEM (CLK) corresponding to the count value of the tempo count register CLK at that time is “1”, and the mode register MDREG (i) is “1”. "Determine whether or not. If it is assumed that the pads PA _{0 to} PA ₇ have never been turned on by the time the hold mode has been entered, the result of the determination is “NO” and step SB
Proceed to 7 and increment the tone generation channel number i.
Then, it is determined whether or not the tone generation channel number i is smaller than "8", the determination result is "YES", and the process returns to step SB5. Then, the above processing is repeated for the tone generation channel numbers i = 1 to 7. When the number i becomes "8" as a result of the execution of step SB7, the determination result of step SB8 becomes "NO" and the process proceeds to step SB9 to increment the tempo clock count register CLK and to execute the main routine of FIG. Return to.

Now, it is assumed that the pad PA p is turned on when the count value of the tempo clock count register CLK is kp. Also,
At this time, it is assumed that the tone color switch TNSW q is on. In this case, in the fourth main routine, a tone color number q corresponding to the tone color switch TNSW q is set in the tone color register ASSBUF (p) (p is a pad number that is turned on), and the tone color parameter is set in the tone generation channel p. It is sent (step SA32), and the contents of the tone color mode table TNMOD (q) are set in the mode register MDREG (p). Here, it is assumed that the tone corresponding to the tone color number q is the attenuated tone, and "1" is set in the mode register MDREQ (p) (step SA33). Then, in this case as well, similarly to the above, the sound generation processing is performed in the sound generation channel p (step SA3
4), "1" is set to the p-th bit (p is the number of the turned-on pad) of the rhythm on-timing register MEM (kp).

Then, in this state, the routine of FIG. 5 is repeatedly activated by the tempo clock interrupt, and the count value of the tempo clock count register CLK is advanced to kq. If the tempo clock interrupt is issued from this state, as in the above, via step SB1 to SB4, step SB
Proceeding to step 5, steps SB5, SB7 and SB8 are repeated while the tone generation channel number i is different from the above number p.

However, when i = p, in this case, the i-th bit (p-th bit) of the rhythm-on-timing register MEM (CLK) {= MEM (kp)} is “1” and the mode register MD
Since REG (i) {= MDREG (p)} is set to "1", the judgment result of step SB5 becomes "YES" and the step
Continue to SB6. Then, the key-on signal is sent to the tone generation channel i (tone generation channel p) of the tone generator TG.
As a result, the attenuated sound assigned to the sound generation channel is brought into the attack state. Then, in the same manner as described above, the subsequent steps are executed, the routine of FIG.
Return to the main routine in the figure. After that, there is a tempo clock interrupt, and the count value of the tempo clock
Each time kp is reached, the same processing as described above is performed, and the tone generation processing of the tone generation channel p is performed.

If the pad PA p described above is turned on not only when the count value of the tempo clock count register is kp but also when the count value is kw, in one bar, when the count value of the tempo clock is kp and The attenuated sound is attacked at both time points. Also, in addition to the pad PA p, for example, when the pad PA x is turned on, sound is similarly generated in the corresponding sound generation channel x, and when the sound is a damped sound, the damped sound is repeated each time the novel is repeated. Is repeatedly attacked. These operations will be easily understood by the explanation of the routine of FIG. 5 described above.

Now, when the pad PA p is operated, the sound corresponding to the tone color switch in the ON state at that time is the continuous sound,
In step SA33 in the figure, the mode register MDREG
It is assumed that "0" is set in (p). In this case, in the routine of FIG. 5, even if CLK = kp and i = p, the determination result of step SB5 is “NO” and step SB6 is not executed. That is, in the case of the continuous sound, the re-attack by the tempo clock interrupt is not performed even in the hold mode.

In the above-described embodiment, the case where the attenuated sound generated by the pad operation is continuously pronounced has been described, but for example, the attenuated sound is generated by the keyboard operation, and the attenuated sound is set to the attack state each time the bar is repeated. You may do it. Further, in the above-described embodiment, whether or not the continuous attack is performed in the hold mode is predetermined for each tone color. However, a part or all of the tone color mode tables TNMOD (0) to TNMOD (63) are stored in RAM. It may be configured so that it is possible to freely specify whether or not to continuously attack each tone color. Further, in the above-described embodiment, the target of the hold mode is all the channels of the tone generator TG, but it is also possible to maintain only the sound generated in the specific sound generation channel in the hold mode.

[Advantage of Invention] As described above, according to the present invention, the musical tone corresponding to each of the performance operators is divided into the musical tone of the first section or the musical tone of the second section, and the holding command is issued. During the period when is input, the sound generation control means, for the performance operating elements corresponding to the first section, produces the musical tone when the operating elements are turned on, and the operating elements are turned off. In this case, the musical sound is stopped, and for the performance operator corresponding to the second section, the musical sound is produced when the operator is turned on, and the musical sound is produced even when the operator is turned off. When the holding means stores information corresponding to the musical tones of the first section, the musical tone is regenerated each time the count value of the counting means matches the count value corresponding to the musical tone. Is pronounced so that the pronunciation is continued. It is possible to obtain the effect that it can be switched depending on the type of musical sound.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic rhythm musical instrument according to an embodiment of the present invention, FIG. 2 is a configuration diagram showing a part of an operation panel in the same embodiment, and FIG. 3 is a rhythm on timing in the same embodiment. Register MEM (n) (n = 0 to 3
1) is a configuration diagram, FIG. 4 is a flowchart showing a processing flow of a main routine of the same embodiment, and FIG. 5 is a flowchart showing a processing flow of a tempo clock interrupt routine of the same embodiment. 1 ... CPU (central processing unit), 2 ... program memory, 3 ... register group, 4 ... rhythm pattern memory, 5 ... tempo clock generator, 6 ... switch circuit, TG ... tone generator.

Claims (1)

[Scope of utility model registration request] 1. A plurality of performance operators to which a plurality of timbres, which are divided into a first group and a second group, are assigned, operation state detection means for detecting an operation state of the performance operators, and an automatic performance. Tempo designating means for designating the tempo of the musical instrument, and when the tone color assigned by the key-depression state detecting means detects an operation of a performance operator belonging to the first group, a musical tone of the tone color is generated, The generation of the musical tone is stopped at the time when the transition of the performance operator to the non-operation state is detected, and the operation of the performance operator belonging to the second group is detected by the tone color assigned by the key depression state detecting means. An electronic musical instrument generating means for starting intermittent tone generation at a time interval corresponding to the tempo designated by the tempo designating means.