JPS5812228Y2 - Denshigatsukiyo Rhythm Ensouchi - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rhythm playing device for an electronic musical instrument that effectively and variably controls the tempo of an automatically played rhythm.

2. Description of the Related Art An automatic rhythm performance device that automatically performs rhythm performance is incorporated into an electronic musical instrument so that the electronic musical instrument performance can be effectively performed in accordance with the rhythm performance.

The automatic rhythm performance device used here divides and counts the tempo pulse signal from a tempo oscillator that sets the basic tempo as appropriate, and uses the divided and counted multiple types of rhythm pulse signals in a rhythm pattern forming circuit to select a rhythm. VC, and the obtained rhythm pattern signal drives a rhythm sound source circuit to generate a predetermined rhythm performance sound.

In this case, the type of rhythm is specified by operating a rhythm selection switch or the like, and the rhythm tempo, that is, the oscillation frequency of the tempo oscillator, is controlled in accordance with the song idea.

This rhythm tempo control means, like the rhythm selection switch and the like, is arranged on the operation panel of the electronic musical instrument, and sets the type of rhythm as well as the tempo before playing the electronic musical instrument.

However, during actual performance, there are many requests to vary the rhythm tempo in accordance with the song's sentiment, etc. during the performance.

During this performance, both hands are often used to operate the keyboard section of the electronic instrument, so even if there is a request to change the rhythm tempo as described above, the tempo control controls on the panel This makes it difficult to operate the automatic rhythm performance device, making it difficult to fully utilize the functions of the automatic rhythm performance device.

This idea was developed in view of the above points, and aims to provide a rhythm performance device for an electronic musical instrument that can not only initialize the rhythm tempo but also effectively control the rhythm tempo during performance. The knee lever controls the oscillation frequency of the tempo oscillator.

An embodiment of this invention will be described below with reference to the drawings.

Figures 1 and 2 show the shelf board 11 below the keyboard of an electronic musical instrument.
This figure shows a knee lever 12 that is incorporated into the unit.The knee lever 12 is rotatably attached to the shelf board 11 with a stopper 13 so that the end on the operator side protrudes from the bottom surface of the shelf board 11. There is.

When the knee lever 12 is pressed down as shown in the figure, the spring 15 between the end of the knee lever 12 and the fixing member 14 integrated with the shelf board 11 becomes almost vertical. There is.

Therefore, when the knee lever 12 is operated with the performer's knee against the spring 15 as shown by the arrow 16, the knee lever 12 and the operating piece 17 corresponding to the side thereof are moved as shown by the arrow 16.
When you move to the left of 9 and then release your knee, spring 18
is smaller than the spring 15, so the knee lever 12
returns to the vertical state, and along with this, the operating piece 17
The spring 18 acts to return it to its original position.

In other words, the operation piece 17 is driven in the direction of the arrow 19 against the spring 18 to drive and control the first variable resistance element 2u mounted on the shelf board 11.

In addition, this knee lever 12 is set to be stored by tilting it down as shown by the arrow 21. At this time, the protruding rod 22 provided on the knee lever 12 is used to control the operation piece 24 of the changeover switch mechanism 23 provided on the shelf board 11 (this drive the movable contact piece).

Of course, a microswitch or the like may be used instead of the changeover switch mechanism 23.

FIG. 3 shows rhythm tempo control means controlled in conjunction with the knee lever mechanism as described above, and shows a tempo oscillator 25 for generating a tempo clock signal coupled to the rhythm pattern forming circuit.

The tempo oscillator 25 is controlled by the first variable resistance element 20 selected by the changeover switch mechanism 23 of the knee lever mechanism, or by the second variable resistance element 26 operated from the panel of the electronic musical instrument. will be set variably.

That is, in the device configured as described above, when the knee lever 12 is folded down and set to the storage position, the changeover switch mechanism 23 is switched from the state shown in the figure, and the second variable resistance element 26 is operated by the operator on the electronic musical instrument panel. , the rhythm tempo can be set arbitrarily.

If you want to control the rhythm tempo while playing an electronic musical instrument, raise the knee lever 12 to its active state as shown in the figure, operate the knee lever 12 with your free knee while playing the instrument, and set the first variable resistance element. 20 is used to change the oscillation frequency of the arbitrary tempo oscillator 25, that is, the tempo of the automatically played rhythm according to the song.

As described above, according to this invention, the rhythm tempo can be freely and easily varied even when there is vck during performance, and it has a very large effect on improving the performance performance of electronic musical instruments equipped with automatic rhythm performance devices. , it can be made highly practical.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the knee lever mechanism for controlling the tempo of an automatic rhythm playing device according to an embodiment of the invention, FIG. 2 is a side view of the same, and FIG. 3 is a diagram illustrating the rhythm tempo control circuit. be. DESCRIPTION OF SYMBOLS 11... Shelf board, 12... Knee lever, 13... Stopper, 14... Fixing member, 15... Spring,
17... Operation piece, 20... First variable resistance element, 2
3... Selector switch mechanism, 25... Tempo oscillator,
26...Second variable resistance element.

Claims (1)

[Scope of utility model registration request] The first variable resistance element is set to an operating state in which the knee lever is raised, and the second variable resistance element is set in the folded storage state. A rhythm for an electronic musical instrument, characterized in that the variable resistance element is operated and controlled on a panel surface to variably set the automatic rhythm tempo, and the first or second variable resistance element controls the rhythm tempo of automatic rhythm performance. performance equipment.