Electronic musical instrument having a vibrato effecting capabil

Details Electronic musical instrument having a vibrato effecting capabil Electronic musical instrument having a vibrato effecting capabil

1989-05-23

1990-09-18

Perkey, W. B.

Music

Instruments

Electrical musical tone generation

84629, G10H 102, G10H 706

Patent

active

049570307

ABSTRACT:
An electronic musical instrument capable of effecting vibratos with any of tones which may be produced by pressing down the keys of a keyboard. A key constant memory stores key constants each being assigned to a different tone, while a vibrato constant memory stores vibrato constants each being assigned to a different tone. The keyboard is provided with an exclusive switch for effecting vibratos. When this exclusive switch is pressed, a counter which counts clock pulses feeds its output to an adder/subtractor in the form of an addition/subtraction switchover signal and an addition/subtraction execution control signal. In response, the adder/subtractor periodically and alternately performs addition and subtraction with the key constant and vibrato constant associated with a key being pressed down.

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