JPH055358B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rhythm sound source allocation device suitable for use in electronic musical instruments, automatic rhythm performance devices, etc. This invention relates to a rhythm sound source allocation device for arbitrarily allocating rhythm sound sources.

[Summary of the invention]

This invention provides a storage means having a plurality of storage areas corresponding to a plurality of input operators, and identifies a sound source corresponding to any one of the plurality of rhythm sound sources in the storage area corresponding to each input operator. By writing data, it is possible to assign arbitrary rhythm sound sources to a plurality of input operators. According to this invention, input operations are facilitated when performing hand percussion or rhythm sequence programs using input operators.

[Conventional technology]

Conventionally, rhythm sound sources such as bass drums, snare drums, etc. are fixedly assigned to each of a plurality of input switches, and hand percussion or rhythm sequence programs can be performed in response to selective operation of the input switches. Rhythm performance devices are known.

[Problem that the invention seeks to solve]

In the conventional apparatus described above, the rhythm sound source that can be specified for each input switch is fixed, so the switch arrangement is difficult for some performers to operate. Further, even for the same performer, the switch arrangement makes it difficult to operate depending on the type of rhythm to be played (for example, march, waltz, swing, mambo, etc.).

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and aims to provide a new rhythm sound source allocation device that can realize the easiest-to-operate operator arrangement according to the type of rhythm and the personality of the performer. That is.

That is, the rhythm sound source allocation device according to the present invention includes a storage means having a plurality of storage areas corresponding to a plurality of input operators, a selection means for selecting a rhythm sound source to be allocated from among the plurality of rhythm sound sources, and a plurality of rhythm sound source allocation devices. When one of the input operators is operated, writing sound source identification data corresponding to the rhythm sound source selected by the selection means to a storage area corresponding to the operated input operator among the plurality of storage areas. It is equipped with the means.

[Effect]

According to the configuration of the present invention, by selecting a desired rhythm sound source by the specifying means and operating a desired input operator, a sound source corresponding to the arbitrary rhythm sound source is stored in the storage area corresponding to each input operator. Identification data can be written. The identification data for each storage area can be used for hand percussion (manual rhythm performance) and rhythm sequence programs (rhythm pattern writing) by reading them out based on selective operations of the input operators.

〔Example〕

FIG. 1 shows an embodiment in which the present invention is applied to a two-keyboard electronic musical instrument.The electronic musical instrument of this embodiment can generate melodies, chords, etc., and rhythm sounds with the help of a microcomputer. It's becoming controlled. In the following, the generation of rhythm sounds will be explained, and the explanation of the generation of melodies, chords, etc. will be omitted.

Circuit configuration (Fig. 1) The bus 10 includes a central processing unit (CPU) 12,
program memory 14, working memory 16,
Sound source number memory 18, rhythm pattern memory 2
0, an upper keyboard circuit 22, a lower keyboard circuit 24, a control switch circuit 26, a tempo oscillator 28, a rhythm sound source circuit 30, and the like are connected.

The CPU 12 executes various processes related to rhythm sound generation according to programs stored in a program memory 14 consisting of a ROM (read-only memory). Details of these processes are shown in FIGS. 4 to 7. This will be described later with reference to the drawings.

The working memory 16 is RAM (random
access memory), and consists of CPU12
It includes storage areas that are used as various registers during various processing. Here, the registers used for rhythm sound generation include the following (1)
There are things like ~(4).

(1) Mode register MDREG This register stores data representing modes such as assign mode and play mode.
The assign mode is a mode in which a desired rhythm sound source is assigned to a desired key on the lower keyboard. The play mode is a mode in which manual rhythm performance (hand percussion) is performed using the lower keyboard to which a rhythm sound source has been assigned.

(2) Key assignment register KAREG This is the key assignment register for the lower keyboard as shown in Figure 2.
Storage area A _{1 ~} corresponding to each of the 61 keys C ₁ ~ C _6
A61 , and sound source number data is stored in each storage area.

(3) Sound source number register SNOREG This is for storing sound source number data read from the sound source number memory 18.

(4) Tempo counter TCL This counts the tempo clock pulses sent from the tempo oscillator 28, and takes a count value of 0 to 95 within 4 bars, and is reset when it reaches 96.

The sound source number memory 18 is composed of a ROM, and stores sound source number data corresponding to each of the 61 keys _C2 to _C7 on the upper keyboard. Here, an example of the correspondence between each key of the upper keyboard and the sound source number is as follows.

Key name sound source number C ₂ 1 C ₂ # 0 D ₂ 2 C ₂ # 0 E ₂ 3 F ₂ 4 〓 〓 B ₆ 35 C ₇ 36 In this example, on the upper keyboard, the black key is assigned sound source number 0, Sound source number 1 for each white key
~36 was assigned.

Each sound source number data is for identifying a rhythm sound source within the rhythm sound source circuit 30. An example of the correspondence between each sound source number and sound source name is as follows.
It is as follows. Sound source number Sound source name 0 None 1 Bass drum 2 Bass drum 3 Snare drum 4 Snare drum 5 Snare drum 6 Hi-hat 7 Hi-hat 〓 〓 36 Cowbell The rhythm pattern memory 20 consists of a RAM, as illustrated in FIG. Multiple sets of rhythm pattern data can be stored. In FIG. 3, 0 to 95 are addresses corresponding to the count value of the tempo counter TCL, and data for one sound generation timing is stored for each address. Each set of rhythm pattern data includes data for 96 sound generation timings and represents a rhythm pattern for 4 measures. The data for each sound generation timing is "1" for each sound or non-sound of the 36 rhythm sound sources corresponding to the sound source numbers 1 to 36 mentioned above.
Or it is represented by "0".

The upper keyboard circuit 22 includes key switches corresponding to each of the 61 keys of the upper keyboard, and is configured to detect key operation information by scanning these key switches.The lower keyboard circuit 24 includes: It includes key switches corresponding to each of the 61 keys on the lower keyboard, and key operation information can be detected by scanning these key switches.

The control switch circuit 26 includes a mode selection switch for appropriately selecting modes such as assign mode and play mode, and a start/stop switch for controlling the start/stop of autorhythm, and the operation information of these control switches. It has become possible to detect

The tempo oscillator 28 is provided to enable automatic rhythm performance, and when the start/stop switch mentioned above is turned on, the reset is released and the tempo clock pulse begins to be sent. Each tempo clock pulse acts to initiate the interrupt routine of FIG. 7, and repetition of the interrupt routine can automatically generate rhythmic sounds according to the rhythmic pattern in memory 20.

The rhythm sound source circuit 30 includes 36 rhythm sound sources corresponding to the sound source numbers 1 to 36 described above, and rhythm sound signals are generated by selectively driving these rhythm sound sources. There is.

The rhythm sound signal generated from the rhythm sound source circuit 30 is supplied to the speaker 34 via the output amplifier 32 and converted into sound.

Main Routine (FIG. 4) FIG. 4 shows the processing flow of the main routine.

First, when a power switch (not shown) is turned on, the routine shown in FIG. 4 begins, and in step 40, various registers as described above are initialized. For example, the mode register MDREG, key assignment register KAREG, and sound source number register SNOREG are all cleared, and the count value of 95 is set in the tempo counter TCL.

Next, in step 42, the operation information of the key switch and control switch described above is taken in, and especially for the mode selection switch, data corresponding to the selected mode is stored in the register MDREG. Then, proceed to step 44.

In step 44, the register MDREG is checked to determine whether it is the assign mode. As a result of this judgment, if it is the assign mode (Y), proceed to step 46.
The assign mode subroutine shown in FIG. 5 is executed and the process returns to step 42. If the mode is not assign mode (l), the process moves to step 48.

In step 48, the register MDREG is checked to determine whether it is play mode. As a result of this determination, if it is the play mode (Y), the process moves to step 50, and it is determined whether a key has been pressed. If no key is pressed (l) in this judgment,
Return to step 42, and if there is a key pressed (Y), proceed to step 42.
Move to 52.

In step 52, it is determined whether the pressed key is the lower keyboard (LK). As a result of this determination, LK
If not (l), it is the upper keyboard (UK), and the process returns to step 42. If it is LK (Y), the process moves to step 54 and the register SNOREG is cleared to 0. This is an initial setting process for the next step 56.

In step 56, the normal play subroutine shown in FIG. 6 is executed, and then the process moves to step 58. If the judgment in step 48 is that the game is not in play mode (l), go to step 58 without going through steps 50 to 56.
Move to.

In step 58, other processing is performed. Here, other processing includes, in addition to normal play, processing in a light play mode in which rhythm patterns can be written to the memory 20, which will be described later. After step 58, the process returns to step 42 and repeats the process as described above.

Assign Mode Subroutine (FIG. 5) FIG. 5 shows the flow of processing in the assign mode subroutine (step 46 in FIG. 4).

First, in step 60, it is determined whether a key has been pressed, and if no key has been pressed (l), the program returns to the main routine (RET). Further, if there is a key depression (Y), the process moves to step 62.

In step 62, it is determined whether the pressed key is the upper keyboard (UK). In this embodiment, the rhythm sound source selected in UK is assigned to a desired key in LK, so it is necessary to operate UK first. As a result of the judgment in step 62, the pressed key is
If it is UK (Y), move to step 64.

In step 64, the sound source number data corresponding to the pressed key is read from the memory 18 and stored in the register.
Store on SNOREG.

Next, in step 66, it is determined whether the value of the sound source number data (sound source number) in the register SNOREG is 0. As mentioned above, tone source number 0 is assigned to the black key on the upper keyboard, so the determination at step 66 is equivalent to determining whether it is the black key that has been pressed. If this determination result is affirmative (Y), there is no rhythm sound source to be driven, and the process returns to the main routine. Further, if the determination result at step 66 is negative (l), the process moves to step 68.

In step 68, the sound source number data in the register SNOREG is transferred to the rhythm sound source circuit 30, and the rhythm sound source corresponding to the sound source number data is driven. As a result, the speaker 34 produces an instrument sound corresponding to the pressed white key (for example, a bass drum sound for the _C2 key), thereby notifying that a specific rhythm sound source has been selected. and,
After step 68, the process returns to the main routine.

After this, press the desired key on the lower keyboard to step
The determination result at 62 is negative (l), and the process moves to step 70.

In step 70, the sound source number data is read from the storage area corresponding to the pressed key in the register KAREG. Then, proceed to step 72.

In step 72, it is determined whether the value of the read sound source number data is 0 or not. This is to check whether it has been assigned to the lower keyboard; in the example above, the rhythm sound source was simply selected using the upper keyboard, but no assignment was made to the lower keyboard. Therefore, the determination result in step 72 is affirmative (Y), and the process moves to step 74.

In step 74, the value of register SNOREG is 0.
Determine whether This is to check whether the rhythm sound source to be assigned has been selected. If it is 0 (Y), no rhythm sound source has been selected, and the process returns to the main routine. Also, if the rhythm sound source has been selected as described above, the step
The determination result in step 74 is negative (l), and the process moves to step 76.

In step 76, the sound source number data in the register SNOREG (sound source number data corresponding to the selected rhythm sound source) is transferred to the storage area corresponding to the pressed key in the register KAREG (same as the one from which the sound source number data was read in step 70). storage area) and store it. As a result, the specific rhythm sound source selected on the upper keyboard is assigned to the desired key on the lower keyboard.

Next, in step 78, the sound source number data assigned in step 76 is read from the register KAREG and transferred to the rhythm sound source circuit 30, and the rhythm sound source corresponding to the sound source number data is driven. As a result, the speaker 34 emits the instrument sound (bass drum sound in the above example) assigned to the key pressed on the lower keyboard, thereby notifying that the desired rhythm sound source has been assigned. After step 78, the process moves to step 80.

At step 80, since the assignment of one key is completed, the register SNOREG is cleared to 0, and then the process returns to the main routine.

Thereafter, rhythm sound sources can be selected and assigned to other keys on the lower keyboard in the same manner as described above. In this case, if you press the assigned key on the lower keyboard, the judgment result at step 72 will be negative (l).
Then, the process moves to step 82.

At step 82, the tone generator number data read from the storage area corresponding to the pressed key in the register KAREG is supplied to the rhythm tone generator circuit 30, and the rhythm tone generator corresponding to the tone generator number data is driven.
As a result, the speaker 34 produces an instrument sound corresponding to the assigned key, thereby notifying that the assigned key has been assigned. After step 82, the process returns to the main routine. Therefore, in this case, the assigned key cannot be re-assigned, but the contents of the routine may be changed to enable re-assignment.

After a desired rhythm sound source is assigned to each key of the lower keyboard as described above, a play mode can be selected using the mode selection switch and manual rhythm performance can be performed by pressing keys on the lower keyboard.

Normal play subroutine (Figure 6) Figure 6 shows the flow of processing in the normal play subroutine (step 56 in Figure 4). What is executed is as described above.

At step 84, the sound source number data is read from the storage area corresponding to the pressed key in the register KAREG. Then, proceed to step 86.

In step 86, the read sound source number data is supplied to the rhythm sound source circuit 30, and the rhythm sound source corresponding to the sound source number data is driven. As a result, the speaker 34 generates the musical instrument sound corresponding to the pressed key. After this, the process returns to the main routine.

Therefore, when the play mode is selected, any rhythm can be played by pressing keys on the lower keyboard. In this case, since a melody can be played on the upper keyboard, the player may play the melody on the upper keyboard and play a rhythm on the lower keyboard as an accompaniment to the melody. Note that when playing a rhythm different from the previous one, it is also possible to select an assignment mode and change the rhythm sound source assignment to match the rhythm to be played.

By the way, when the light play mode is selected by the mode selection switch, manual rhythm performance is possible in the same way as described above, and the rhythm pattern corresponding to the content of the performance can be played, for example, in the third rhythm pattern.
The memory 20 can be written as shown. In this case, "1" is written in the memory 20 for a rhythm sound source that has generated a sound at each sound generation timing corresponding to each address, and "0" has been written for a rhythm sound source that has not produced a sound.

After writing the desired rhythm pattern into the memory 20, the start/stop switch can be turned on to start autorhythm performance based on the pattern stored in the memory 20.

Interrupt Routine (Figure 7) Figure 7 shows the processing flow of the interrupt routine that enables autorhythm performance.This routine is started every time a tempo clock pulse is sent from the tempo oscillator 28. This is as mentioned above.

When the tempo oscillator 28 generates the first tempo clock pulse after turning on the start/stop switch, the first interrupt process is performed. That is, in step 88, the value of the tempo counter TCL is incremented by one. tempo counter
Since TCL is initially set to a count value of 95, the count value will be 96.

Next, in step 90, it is determined whether the value of TCL is 96. Since it is now 96 (Y), proceed to step 92 and clear TCL to 0. And step
Move to 94.

In step 94, data for one sound generation timing at the address corresponding to the TCL value (0 in this case) is read from the memory 20 and supplied to the rhythm sound source circuit 30, and the rhythm sound source corresponding to "1" in the read data is read out. Drive. As a result, the speaker 34 produces musical instrument sounds such as a bass drum or a cowbell in the example shown in FIG. 3, for example.

After this, when the second tempo clock pulse is sent from the tempo oscillator 28, step 88
The value of TCL becomes 1. Therefore, the determination result at step 90 is negative (l), and the process moves to step 94.

In step 94, the memory 20 is
Data for one sound generation timing is read out from , and the rhythm sound source is driven, and in the example of FIG. 3, a musical instrument sound such as a snare drum is produced.

Thereafter, the above-described interrupt processing is repeated every time a tempo clock pulse is sent. Therefore, the rhythm performance automatically proceeds based on the pattern stored in the memory 20, and when the performance for four measures is completed, the same rhythm performance is repeated from the beginning of the first measure. If you want to stop the autorhythm performance, just turn on the start/stop switch once more.

In the above embodiment, the keys to which the rhythm sound source has been assigned on the lower keyboard are used for generating instrument sounds or writing rhythm patterns.
It can also be used to erase the sound command "1" from the rhythm pattern written in "0".
To do this, for example, after selecting the erase mode with the mode selection switch, specifying the desired address and pressing the desired key on the lower keyboard will cause the bit position corresponding to this key to become "0". Bye.

Furthermore, in the above embodiment, the upper keyboard is used as a means for selecting a rhythm sound source to be assigned, and the keys on the lower keyboard are used as input operators to which rhythm sound sources are assigned. It may be divided so that one divided key area is used for rhythm sound source selection and the other divided key area is used for input operations.

Further, the sound source selection operator or the input operator is not limited to a keyboard, but may be a push button switch, a pressure sensitive switch, or the like.

Other Embodiments (FIG. 8) FIG. 8 shows another embodiment in which the present invention is applied to a rhythm performance device, and particularly shows the arrangement of switches on the top surface of the panel.

The 18 input switches included in the input switch group 100 include bass drum (BD1), bass drum (BD2), snare drum (SD1), etc.
18 rhythm sound sources are fixedly assigned.
Manual rhythm performance or rhythm pattern writing can be performed by selectively operating these input switches.

In such a configuration, the input switch group 10
Near 0, there is an assignment mode setting switch.
ASM and sound source name changeover switch ULS are provided. When the assignment mode setting switch ASM is turned on, it enters the assignment mode and input switch group 1
00, six input switches in a particular column 102 act as rhythm sound source selection switches, and 12 input switches in the other two columns 104 act as input operators. In this case, column 102
Different rhythm sound source names NU and NL are written on the operation panel for each input switch, and the sound source name NU can be selected unless the sound source name changeover switch ULS is turned on. Name NL can be selected. Therefore, by using the sound source name changeover switch ULS, it is possible to selectively designate 12 rhythm sound sources using the six input switches in column 102.

In the assign mode, in the same manner as in the previous embodiment, by selecting an arbitrary rhythm sound source with the input switch in column 102 and operating the input switch in column 104, each input switch in column 104 can be selected as desired. You can assign rhythm sound sources. After the assignment is completed, manual rhythm performance or rhythm pattern writing can be performed using the input switch in column 104.

Still Another Embodiment (FIG. 9) FIG. 9 shows a rhythm playing device according to still another embodiment of the present invention, and particularly shows the arrangement of the switches on the top surface of the panel.

The input switch group 110 includes a large number of input switches arranged in a matrix, and a rhythm sound source selection switch RSS and a sound source name display DSP are provided near the input switch group 110.

In assign mode, the sound source name display DSP
For example, a specific rhythm sound source name such as "bass drum" is initially displayed, and a different rhythm sound source name is displayed each time the rhythm sound source selection switch RSS is turned on.

When a desired sound source name is displayed on the sound source name display DSP and a desired input switch in the input switch group 110 is turned on, the rhythm sound source corresponding to the sound source name being displayed is assigned to the turned on input switch. It will be done. In this way, input switch group 1
Any rhythm sound source can be assigned to each of the 10 input switches.

FIG. 9 shows an example of rhythm sound source assignment to each input switch in the input switch group 110. In this example, rhythm sound sources are assigned to correspond to the arrangement of percussion instruments on the stage. be. In other words, BD is a bass drum, SD is a snare drum, FT1 and FT2 are floor toms,
Rhythm sound sources are assigned such that TM1 to TM8 are eight toms and CY1 to CY6 are cymbals.

By allocating rhythm sound sources in this manner, when performing a manual rhythm or writing a rhythm pattern, the switch operation can be performed keeping in mind the arrangement of percussion instruments on the stage, so that the switch operation can be performed smoothly.

〔Effect of the invention〕

As described above, according to the present invention, a storage means having a plurality of storage areas corresponding to a plurality of input operators is provided, and a desired rhythm sound source is selected and a desired input operator is operated to select the desired rhythm sound source. Since the sound source identification data corresponding to the selected rhythm sound source is written in the storage area corresponding to the input controller, it is possible to assign any rhythm sound source to multiple input controllers, and the performer can easily identify the rhythm type, etc. It is possible to set the operator arrangement that is easiest to operate by taking into consideration the following.

It is also possible to allocate one rhythm sound source to a plurality of input operators, and in this way, complex or fast performances such as trill performances can be performed easily.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the circuit configuration of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a storage area layout diagram of a key assign register, and FIG. 3 is a data format diagram of a rhythm pattern memory. Figure 4 is a flowchart of the main routine.
6 is a flowchart of the subroutine of the normal play mode, FIG. 7 is a flowchart of the interrupt routine, and FIG. 8 is a top view of the panel of another embodiment. FIG. 9 is a top view of a panel of still another embodiment. 10...Bus, 2...Central processing unit, 14...
program memory, 16...working memory,
18...Tone source number memory, 20...Rhythm pattern memory, 22...Upper keyboard circuit, 24...Lower keyboard circuit, 26...Control switch circuit, 28...Tempo oscillator, 30...Rhythm sound source circuit, 100,
110...Input switch group.

Claims (1)

[Scope of Claims] 1. A rhythm sound source allocation device for arbitrarily allocating a plurality of rhythm sound sources to a plurality of input operators, comprising: (a) a plurality of storage areas corresponding to the plurality of input operators, respectively; (b) selection means for selecting a rhythm sound source to be assigned from among the plurality of rhythm sound sources; (c) storing the selection in a storage area corresponding to a desired input operator among the plurality of storage areas; 1. A rhythm sound source allocation device comprising: writing means for writing sound source identification data corresponding to a rhythm sound source selected by the means.