JPS6326868Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a preset device for presetting tones or effects of musical tones of electronic musical instruments. In conventional preset devices for presetting musical tones or effects of electronic musical instruments, a desired tone or effect is obtained by selecting one of a plurality of preset buttons. However, in this method, the tone color or effect is already fixed by the producer, and the performer cannot freely set the desired tone color or effect during the performance. As an improvement on this, the applicant has proposed
No. 52-146615 proposed an organ that can digitally preset desired tones and effects. However, with this method, once the performer presets the tone or effect, etc., the performer cannot change the tone or effect during the performance, and must interrupt the performance each time. . The purpose of this invention is to allow the performer to preset tones and effects that correspond to the progress of the performance, automatically switch the presets as the performance progresses, and also to modify the preset information in parallel with the performance. To provide a preset device for an electronic musical instrument that allows additions to be made. In order to achieve the above object, the preset device for the electronic musical instrument of the present invention includes a switch that presets information regarding the timbre and effect of musical tones, a switch operation detection circuit that detects operation information of the switch, and a rhythm signal generator that generates rhythm timing information. a memory circuit for storing operation information of the switch and the rhythm timing information corresponding thereto;
At the time of presetting, the switch is operated and the switch operation information is written in the memory circuit based on the rhythm timing information, and the switch operation information written during the performance is read out based on the rhythm timing information and stored in the organ body corresponding to the timbre and effect of the musical note. It is characterized by comprising a control circuit for controlling the gate circuit, and a correction storage area is provided in the memory circuit, and when the switch operation is corrected during performance, switch operation information based on the rhythm timing information is written. be. The present invention will be described in detail below with reference to examples. FIG. 1 is a schematic explanatory diagram showing the configuration of an embodiment of the present invention. In the figure, first, at the time of presetting, the tone and effect of the organ main body 40 are selected by a switch of the switch circuit 10. The tone color and effect selected at this time are stored in the storage circuit 20 as switch information. This writing to the memory circuit 20 is performed by the control circuit (switch information processing circuit) 30 in synchronization with timing information from the rhythm circuit 50 that generates rhythm timing information. Next, during performance, the information stored in the storage circuit 20 is read out in synchronization with timing information according to a command from the control circuit 30, and this information is supplied to the switch circuit 10. According to this information, gate circuits in the organ main body 40 corresponding to the respective switch information are controlled to be turned on or off. In this way, automatically preset tones or effects are obtained. Furthermore, when a switch in the switch circuit 10 is manually operated while the gate circuit in the organ main body 40 is being controlled by information from the memory circuit 20, that is, when the stored switch information is When the need arises, the corresponding switch information in the storage circuit 20 is immediately rewritten with this switch modification information in response to a command from the control circuit 30. The switch information stored in this way can be freely modified, allowing the performer to create a preset of the desired tone or effect. FIG. 2 is a detailed explanatory diagram of the embodiment of FIG. 1. In the figure, the control circuit 30 in FIG. 1 includes an information processing circuit (CPU) 31 and a fixed memory (ROM) 3.
2, and control information for controlling the CPU 31 is written in the ROM 32. Further, a random access memory (RAM) 21 that can be freely written and read is provided corresponding to the memory circuit 20. The cassette 22 records the contents of the RAM 21 on tape, and is attached as necessary.
Information is transferred between these units in the usual manner. Next, the switch circuit 10 in FIG.
1, a switch operation detection circuit 12 and a switch logic circuit 13. As will be described in detail later, the switch 11 is a manual non-locking switch, that is, a non-locking type switch. The switch operation detection circuit 12 detects that the switch 11 has been pressed, and this switch information is sent to the input port 15.
The data is written into the RAM 21 via a command from the CPU 31. The switch logic circuit 13 inputs the switch information from the RAM 21 via the output port 14 and controls the gate circuit in the organ main body 40.
The gate circuit is controlled with priority over the switch information from 21. A conventional organ body 40 is used, and all gate circuits necessary for presetting are controlled by the output of the switch logic circuit 13. The rhythm circuit 50 not only generates rhythm timing information, which is the main element of the present invention, but also has the function of performing automatic accompaniment such as auto bass and auto arpeggio. Rhythm timing information from the rhythm circuit 50 is sent to the CPU 31 via the input port 15 and also sent to the switch operation detection circuit 12, and the RAM 21 and switch logic circuit 13 are controlled by instructions from the CPU 31. Here, a timing signal indicating one bar is used as the rhythm timing information. The reason for this is that performers usually change tones or effects at bar intervals. In other words, musically, switching tones or effects in the middle of a measure disrupts the unity of the music and causes discomfort to the listener. Output port 14 and input port 15 are CPU
31 and switch circuit 10, circuits 11, 12, 1
3. It is an interface inserted between the rhythm circuit 50, and as described later in connection with the operation, the start signal is connected to the input port 15 and the rhythm circuit 50.
Then, a write signal is input to the input port 15. In addition, a display section 60 attached to the organ main body 40
are visually displayed according to each switch operation. Next, the operation in the above configuration will be explained. First, the preset stage, ie, the method of storing data in the RAM 21, will be explained. When the start switch (not shown) is pressed, the start signal is sent to input port 15.
is input to the rhythm circuit 50, and the rhythm circuit 50 and control circuit 30 start operating. Then, the write signal “1” is sent to the CPU 3 via the input port 15.
Only send-to-write operations are performed. The flowchart is shown in Figure 3. That is, after the start, the rhythm timing signal from the rhythm circuit 50 is counted by the CPU 31 via the input port 15, and on the other hand, when the switch 11 is preset, the switch operation detection circuit 12 detects the on state and the input port 15 is turned on. through CPU
31 to the RAM 21. As shown in Table 1 below, the memory contents of the RAM 21 are such that the point in time when the switch detection signal and the rhythm timing signal from the rhythm circuit 50 match is the 0 address, the memory contents are the timing number (1), and the CPU
The switch state is detected from the related information (1-1 to 1-n) of 31. And the number of timings (1)
and the state of the switch are stored in the RAM 21. The switch detection signal and rhythm tie will continue to be set.

【table】

[Table] Let the address at the time of matching of the timing signal be n+1,
Let the memory content be the timing number (2). If you memorize this repeatedly, you will have memorized which switch is on or off at which point. However, in this flowchart, ON detection is performed after the start, so the switch is set in advance, and when the switch is started, the set switch is
It may happen that the data is not stored in the RAM 21. Therefore, it is necessary to press one switch at the start. Another method is to slightly change the contents of the ROM32 so that the on-detection is not performed immediately after the start, and the
After writing to the RAM 21, on-detection may be performed and the preset write operation shown in the flowchart of FIG. 3 may be performed. Next, the flowchart of FIG. 4 shows the operation when the write signal is set to "0" after presetting. When the start switch is pressed, the rhythm circuit 50 and control circuit 30 start operating as described above, and the RAM2
The first switch state preset to 1 is
It is temporarily held in the internal register of the CPU 31, and the timing number (1) of the memory contents shown in Table 1 is counted by the rhythm timing signal from the rhythm circuit 50, and if the switch 11 is not pressed during this time,
This switch information is supplied to the switch logic circuit 13 via the output port 14 to control the gate circuit of the organ body corresponding to the first preset switch. Next, the timing number (2) of the memory contents set in RAM 21 continues to be set in CPU 31.
is temporarily held in an internal register. The CPU 31 counts the timing number according to the timing signal from the rhythm circuit 50, and the counted number is
It is checked whether it is equal to the timing number held in the internal register of CPU 31. When the count number equals the timing number, this switch information is sent to the output port 14, and at the same time
Timing number of next memory contents of RAM21
(3) is taken into the internal register of the CPU 31.
In this way, the presets can be automatically switched at any time desired by the performer. FIG. 4 shows this state. Next, in order to modify the preset during the performance, the player simply operates the switch 11. For example, to turn off a switch that is on, or turn on a switch that is off, the performer only needs to press the switch. The switch operation detection circuit 12 notifies the CPU 31 that the switch 11 has been operated. As soon as the CPU 31 approaches the end of the measure in which the switch 11 was operated, the CPU 31 transfers the output of the switch logic circuit 13 to the RAM.
Write on 21. In this case, since this is modification information, the content of the information stored will still be the timing number and switch information at that time, but
The location where it is stored is the modification information storage area of the RAM 21. The flowchart in FIG. 4 includes this correction procedure. After that, when the switch is operated again, the correction information will be memorized and the timing count will be changed to CPU31.
When the number of timings is equal to the number of timings held in the internal register, the contents of the next correction information storage area of the RAM 21 are read out, and this operation is repeated sequentially. When the performance is finished, since both the original information and the modified information are stored in the RAM 21, it is only necessary to rearrange the stored contents in the modified information storage area to a predetermined location. FIG. 5 shows each circuit 1 of the switch circuit 10 in FIG.
1, 12, and 13 are detailed circuit explanatory diagrams. In the figure, the switch 11 consists of non-lock type switches 11a to 11n, and when pressed, the switch 11 turns on the power supply.
When it comes into contact with Vcc and releases it, it is released. This switch 1
1 is a T-type flip-flop 13-2a to 13-2
It is connected to the input T terminal of n. The output terminals Q of the T-type flip-flops 13-2a to 13-2n are connected to the gate circuit of the organ main body 40, and the outputs thereof are connected to the light emitting diodes (LEDs) of the display circuits 60a to 60n. Display circuit 60
When the output of the T-type flip-flop becomes "1", the LEDs 60a to 60n light up, indicating that the gate circuit of the organ main body 40 is turned on. Switch information from RAM21 is output to port 1
4, AND circuits 13-1a to 13-1n
is input. Immediately after that, a reset signal comes in.
After clearing the flip-flops 13-2a to 13-2n, the set signal is input and the switch information is T.
The data are incorporated into flip-flops 13-2a to 13-2n. In this way, the gate circuit of the organ main body 40 is controlled by the switch information output from the RAM 21. The above is done at the beginning of one measure, and is done for an almost negligible amount of time, so it does not cause any audible disturbance during the performance. After the SET signal falls, the contents of the T-type flip-flops are changed only by switches 11a-11n. For example, if the switch information corresponding to switch 11a is "0" and you manually switch switch 1 midway through,
Consider the case where 1a is operated. By pressing the switch 11a, the T-type flip-flop 13-2a is inverted, the Q output rises to "1", the LED 60a of the display circuit lights up, and the player can confirm that the switch 11a has been activated. At the same time, from switch 11a to OR circuit 1
The RS flip-flop 12-2 connected through 2-1 is set, and its Q output becomes on/off information "1", indicating that a switch operation has been performed.
Notify CPU31. At the end of one bar, the CPU 31 outputs the switch information to the RAM 21 only when the output of the RS flip-flop (FF) 12-2 is "1" by outputting the timing information (2) of the second stored content.
Write to the correction information storage area. In this way, when the switch is operated during the process, the corrected information is written. Timing information here (1 measure)
and timing information (2) are each supplied from the rhythm circuit 50. When one bar ends, the RS flip-flop (FF) 12-2 is reset to prepare for the next operation. FIGS. 6a to 6g are time charts for explaining the operation of FIG. 5, and show a case where the number of stored timings and the number of counts match in a measure before the measure shown in a of FIG. Therefore, as shown in Figure b,
At the beginning of one measure, switch information in RAM 21 (switches 11a off, 11b on, 11c off)
After T is read out, the reset signal (c in the same figure)
Previous switch information (switch 11a) stored in flip-flops 13-2a to 13-2n
off, 11b off, 11c on) are cleared. The switch information read out by the subsequent set signal (d in the figure) is transferred to the T-type flip-flop 13-2.
It is taken into a to 13-2n. Consider the case where the switch 11a is manually turned on in the middle of a measure (g in the same figure). As a result, the RS flip-flop 12-2 is set as shown in FIG.
1 is a T-type flip-flop 13-2a to 13-2
The output of n (switch information) is sent to the RAM 21 via the input port 15 and written (e). As explained above, according to the present invention, the performer can freely set preset information in advance, and can also modify it sequentially to bring it into a state that suits the desired tone or effect. Furthermore, since the switches are automatically switched in accordance with the timing of the performance, there is a great advantage that you can concentrate on playing without having to worry about switches at all. In the embodiment, the rhythm timing signal is generated in units of 1 bar, but if there is sufficient RAM capacity, it can be generated in smaller units, or conversely, if there is not enough capacity, the rhythm timing signal can be generated in units of 2 or 4 bars. Good too.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of an embodiment of the present invention, FIG. 2 is a detailed explanatory diagram of the embodiment of FIG. 1, FIGS. 3 and 4 are flowcharts for explaining the operation of FIG. FIG. 5 is a specific circuit explanatory diagram of the main part of the embodiment shown in FIG.
FIG. 6 is an explanatory diagram of the operation of FIG. 5, and in the figure, 10
is a switch circuit, 11 is a switch, 12 is a switch operation detection circuit, 13 is a switch logic circuit, 14
is an output port, 15 is an input port, 20 is a storage circuit, 21 is a random access memory (RAM),
22 is a cassette, 30 is a control circuit, 31 is an information processing circuit (CPU), 32 is a fixed memory (ROM), 4
0 is the organ main body, 50 is a rhythm circuit, and 60 is a display section.

Claims (1)

[Claims for Utility Model Registration] A switch that presets information regarding the timbre and effect of a musical tone, a switch operation detection circuit that detects operation information of the switch, a rhythm signal generation circuit that generates rhythm timing information, and an operation information of the switch. A memory circuit stores the rhythm timing information corresponding to this, and a switch is operated during preset to write switch operation information in the memory circuit based on the rhythm timing information, and the switch operation information written during performance is written based on the rhythm timing information. A control circuit is provided for controlling a gate circuit within the organ body corresponding to the timbre and effect of the musical sound to be read out, and a correction storage area is provided in the memory circuit, so that when a switch is operated and corrected during performance, the rhythm timing information is stored. 1. A preset device for an electronic musical instrument, characterized in that switch operation information is written based on the preset device.