JPS6040037B2 - electronic musical instruments - Google Patents

Description

Detailed Description of the Invention The present invention provides an electronic musical instrument having a plurality of automatic performance devices such as an automatic rhythm performance device, an automatic bass/chord performance device, an automatic arpeggio performance device, etc., in which any two automatic performance devices can be played simultaneously. The present invention relates to an electronic musical instrument that prevents timing deviation between automatic performance devices when operating.

In electronic musical instruments that generally have multiple automatic performance devices,
When operating at least two automatic performance devices at the same time, it is necessary to ensure that there is no timing difference between them.

For example, when an automatic rhythm performance device and an automatic albeggio performance device are operated at the same time, if a timing difference occurs between them, accurate rhythm performance and albeggio performance will not be possible. By the way, automatic performance devices such as automatic rhythm performance devices, automatic bass/chord performance devices, and automatic arpeggio performance devices are equipped with a tempo pulse generator, and based on the tempo pulses from the tempo pulse generator, each automatic performance device generates a tempo pulse. The tempo of the generated rhythm performance, bass/chord performance, albeggio performance, etc. is controlled.

Therefore, for example, in an electronic musical instrument equipped with three types of automatic performance devices: an automatic rhythm performance device, an automatic bass/chord performance device, and an automatic arpeggio performance device, in order to prevent timing deviations between the respective devices. As shown in FIG.
The automatic bass/chord performance device 3 and the automatic arpeggio performance device 4 may be commonly controlled. However, the first
The device shown in the figure applies a reference clock pulse generated from a clock pulse oscillator 5 to a tempo pulse generator 1, and divides the reference clock pulse as appropriate to form a tempo pulse.
is commonly used for each device 2, 3, and 4, and when the start switch 6 is off, a signal "1" is applied to the reset terminal R of the tempo pulse generator 1 to stop the operation of the tempo pulse generator layer 1. When the start switch 6 is turned on, the signal applied to the reset terminal R of the tempo pulse generator 1 is set to "0", the reset of the tempo pulse generator 1 is released, and the generation of tempo pulses is started. Further, the outputs of the automatic rhythm playing device 2, the automatic bass/chord playing device 3, and the automatic arpeggio playing device 4 are mixed via mixing resistors 7, 8, and 9, respectively, and
0 and is amplified as appropriate and output from the sound system 11. Therefore, when the start switch 6 is turned on, the automatic rhythm playing device 2, the automatic bass chord playing device 3, and the automatic arpeggio playing device 4 all operate at the same time, and only the automatic rhythm playing device 2 starts playing the automatic bass chord playing device. It is not possible to operate each of the devices 2, 3, and 4 separately, such as only the device 3, only the automatic arpeggio player 4, or a combination of the automatic rhythm player 2 and the automatic bass chord player 4. In order to solve this problem, as shown in FIG. 2, tempo pulse generators 12, 13, and 14 are provided for the automatic rhythm playing device 2, automatic bass chord playing device 3, and automatic arpeggio playing device 4, respectively. It is possible to set and reset each tempo pulse generator 12, 13, 14 separately by turning on each start switch 15, 16, 17. The same number of tempo pulse generators 12, 13, 14 (three in the case of FIG. 2) are required, and each tempo pulse generator 12, 13,
14, each tempo pulse generator 12,
Synchronous pulse generator 1 that applies synchronizing pulses to 13 and 14
Furthermore, once the synchronization of the tempo pulse generators 12, 13, and 14 is lost for some reason, synchronization cannot be achieved until the next synchronization pulse arrives, which is an inconvenience.

This invention has been made in view of the above-mentioned circumstances, and is an electronic musical instrument having a plurality of automatic performance devices, in which each automatic performance device can be operated separately, and there is no timing difference between the devices. The purpose is to provide For this purpose, in the present invention, each automatic performance device is driven by a tempo pulse from a common tempo pulse generator, and a start switch corresponding to each automatic performance device is connected to the output of each automatic performance device. A date is provided that operates when at least one of the start switches is turned on, and the tempo pulse generator is configured to operate when at least one of the start switches is turned on, and the plurality of automatic performance devices are separately driven by one tempo pulse generator. We are making it possible to do so. Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 shows an embodiment of the electronic musical instrument of the present invention, which includes an automatic rhythm playing device 21, an automatic bass/chord playing device 22, and an automatic albeggio playing device 2.
It has three types of automatic performance devices.

A clock pulse oscillator 19 oscillates a reference clock pulse of a predetermined frequency. This reference clock pulse is applied to the tempo pulse generator 20'. The tempo pulse generator 20 consists of a frequency dividing circuit, and divides the reference clock pulse as appropriate to generate the automatic rhythm playing device 2.
1. A tempo pulse is generated to control the tempo of the automatic bass/chord playing device 22 and the automatic arpeggio playing device 23. A counter counter can be used as the tempo pulse generator/transmitter 20 that divides the frequency of this reference clock pulse to form a tempo pulse. The tempo pulses generated by the tempo pulse generator 20 are transmitted to an automatic rhythm playing device 21, an automatic bass/chord playing device 22, and an automatic albeggio playing device 2.
Join 3. The automatic rhythm performance device 21 produces rhythm sounds such as bass drum, low conga, high conga, high bongo,
It is equipped with a sound source circuit that generates percussion instrument sounds such as snare drums and cymbals, and a rhythm pattern setting circuit that sets IJ rhythm patterns such as march, waltz, swing, slow rock, jazz rock, rumba, bossa nova, and samba. , which opens and closes the percussion instrument sound generated from the sound source circuit at the sound generation timing formed based on the tempo pulse according to the rhythm pattern set in the rhythm pattern setting circuit, and generates the rhythm sound (percussion instrument sound) of the desired rhythm. It is. The automatic bass/chord performance device 22 is an automatic performance device that automatically produces chords (chord sounds) and pedal sounds (bass sounds) according to a predetermined rhythm pattern, and this automatic performance is performed, for example, by playing multiple keys in the lower keyboard in chord form. It is executed by pressing .

That is, the automatic bass/chord playing device 22 includes a circuit for detecting chords played on the lower keyboard, a circuit for storing the chords, a circuit for developing the memorized chords, and a circuit for playing the bass pattern according to the selected rhythm pattern. A circuit that drives a signal developed by the bass pattern, and a circuit that opens and closes the driven signal according to the bass pattern. It is controlled so that each note is produced one by one, and at the same time, the chord tones pressed on the lower keyboard are also selected and produced at appropriate timings corresponding to the rhythm pattern. This automatic base/
The basic rhythm pattern of the chord playing device 22 is formed based on tempo pulses from the tempo pulse generator 20. The automatic albeggio performance device performs automatic albeggio performance by controlling the sound to be sounded one by one in sequence according to the albeggio pattern selected based on the notes of 1 and multiple keys pressed on the keyboard. The timing of sound generation is determined by the tempo pulse from the tempo pulse generator 20.

It should be noted that the automatic rhythm playing device 21, the automatic bass/chord playing device 22, and the automatic arpeggio playing device 23 can be of known types, so they will not be described in detail here. Gates 24, 25, and 26 are provided on the output sides of the automatic rhythm playing device 21, automatic bass/chord playing device 22, and automatic arpeggio playing device 23, respectively, and the outputs of the gates 24, 25, and 26 are mixed, respectively. resistance 27,
The mixed signals are mixed via 28 and 29 and added to the amplifier 30.

The signal applied to the amplifier 30 is appropriately amplified and generated by the sound system 31. Tempo pulse generator 20 and gates 24, 25, 26 are controlled by signals from switch circuit 32.

The switch circuit 32 includes three 2-lotus interlocking switches 33 and 34.
, 35. When the switches 33, 34, and 35 are all off, a signal "1" is applied to the reset terminal R of the tempo pulse generator 20 via the resistor 36, and no signal is applied to each gate 24, 25, and 26. Since then, the tempo pulse from the tempo pulse generator 20 has been stopped, and each gate 24, 25, 26 is closed. When the switch 33 is turned on, the tempo pulse generator 20
The signal applied to the reset terminal R of is set to "0" by the signal "0" applied via the switch 33a, and the tempo pulse generator 20 starts generating tempo pulses. At the same time, a signal "1" is applied to the gate 24 via the switch 33b, opening the gate. Therefore, the tempo pulse from the tempo pulse generator 20 is applied to the automatic rhythm playing device 21 to start automatic rhythm playing, and the output of the automatic rhythm playing device 21 is passed through the gate 24 and the resistor 27 to the amplifier 3.
An automatic rhythm sound is generated from the sound system 31. Here, when the tempo pulse generator 20 operates, the automatic bass/chord playing device 22 and the automatic arpeggio playing device 23 also operate at the same time, but since the gates 25 and 26 are closed, the automatic bass/chord playing device 22 and the automatic arpeggio playing device 23 also operate. Since the power of the automatic arpeggio performance device 23 is blocked by the gates 25 and 26 and is not applied to the amplifier 30, only automatic rhythm sounds are produced from the sand system 31.・Similarly, if you turn on switch 34 or 35, automatic bass chord sound,
Automatic arpeggio sounds can be played separately.

That is, when the switch 34 is turned on, the signal applied to the reset terminal R of the tempo pulse generator 20 becomes "0" due to the signal "0" via the switch 34a, and the operation of the tempo pulse generator 20 is started, and at the same time, the switch 34 is turned on.
The gate 25 is opened by the signal "1" through the gate b, and the output of the automatic bass/chord playing device 22 is applied to the amplifier 30 via the gate 25 and the resistor 28, and the sound system 3
Automatic bass chord sounds are sounded from 1. Also, when the switch 35 is turned on, the signal "0" is sent through the switch 35a.
” resets the reset terminal R of the tempo pulse generator 20.
The signal applied to the tempo pulse generator 20 becomes “0”.
At the same time, the gate 26 is opened by a signal "1" through the switch 35b, and the output of the automatic albeggio player 23 is applied to the amplifier 3 via the gate 26 and the resistor 29, and the automatic albeggio player is output from the sound system 31. A sound is pronounced. Automatic rhythm performance device 21, automatic bass/chord performance device 22, automatic albeggio performance device 2
3, for example, the automatic rhythm playing device 21
Two types of automatic performance devices, the automatic bass/chord performance device 22 and the automatic bass/chord performance device 22, are operated at the same time.

In this way, switch 33a or switch 34
The signal applied to the reset terminal R of the tempo pulse generation retransmission 20 becomes "0" by the signal via the switch 33b and the signal applied to the reset terminal R of the tempo pulse generator 20 starts operating. 25
is opened, and the outputs of the automatic rhythm playing device 21 and automatic bass chord playing device 22 are applied to the amplifier 301 via gates 24, 25 and resistors 27, 28, respectively, and the sound system 31 outputs automatic rhythm sounds and automatic bass chord playing devices. The chord sounds are sounded at the same time. In addition, switches 33, 34, 3
5 are turned on at the same time, the signal applied to the reset terminal R of the tempo pulse generator 20 becomes "0", and the gate 2
4, 25, and 26 are all open, the sound system 31 simultaneously produces automatic rhythm tones, automatic bass/chord tones, and automatic arpeggio tones, allowing three types of automatic performances to be performed simultaneously.

In the above embodiment, the present invention is applied to an electronic musical instrument having three types of automatic performance devices: an automatic rhythm performance device, an automatic bass/chord performance device, and an automatic arpeggio performance device. Of course, the present invention is not limited to electronic musical instruments having an automatic performance device, but can be applied to electronic musical instruments having a plurality of automatic performance devices that require control using tempo pulses. As explained above, according to the present invention, a plurality of automatic performance devices are controlled by the tempo pulse from one tempo pulse generator, and each automatic performance device is operated separately. Moreover, since a plurality of automatic performance devices are controlled by one tempo pulse generator, there is no timing deviation between the devices, and the automatic performance function can be significantly improved.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing an example of a conventional device, and FIG. 3 is a block diagram showing an embodiment of the present invention. 20... Tempo pulse generator, 21...
automatic rhythm playing device, 22... automatic bass/chord playing device, 23... automatic albeggio playing device,
19... Clock pulse oscillator, 30...
...Amplifier, 31...Sound system, 24,25,
26...gate, 32...switch circuit. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In an electronic musical instrument having a plurality of automatic performance devices, a tempo pulse generation device that commonly provides a tempo pulse to the plurality of automatic performance devices, and a tempo pulse generator provided on the output side of the plurality of automatic performance devices, respectively, and An electronic musical instrument comprising: a gate that is operated when a corresponding start switch is turned on; and a switch circuit that sends an operation start signal to the tempo pulse generation circuit when at least one of the start switches is turned on.