Electronic musical instrument with glide

Details Electronic musical instrument with glide Electronic musical instrument with glide

1977-08-09

1978-10-31

Schaefer, Robert K.

Music

Instruments

G10H 102

Patent

active

041227433

ABSTRACT:
In a digital type electronic musical instrument, a glide effect is produced by digitally frequency-modulating the frequency of a musical tone in such a manner that the frequency changes quickly and smoothly. Glide information used for effecting this frequency-modulation is produced on the basis of a glide code obtained by counting a clock pulse. The glide information which changes its contents uniformly is multiplied with the basic frequency information to effect the frequency-modulation. The glide effect can be controlled for each individual keyboard. According to an embodiment of the invention, the frequency-modulation is applied to an attack portion of a musical tone only and sustain and decay portions of the musical tone are reproduced with a normal frequency so that the musical tone will be provided with a crisp, vivid musical effect.

REFERENCES:
patent: 3854366 (1974-12-01), Deutsch
patent: 3929053 (1975-12-01), Deutsch

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