Dual mode musical tone generator using stored musical waveforms

Details Dual mode musical tone generator using stored musical waveforms Dual mode musical tone generator using stored musical waveforms

1986-07-18

1987-12-22

Witkowski, Stanley J.

Music

Instruments

84 128, G10H 108, G10H 700

Patent

active

047139978

ABSTRACT:
A keyboard operated musical instrument is disclosed in which dual musical tones are created by reading out data values stored in a waveshape memory. Waveshape data values are read out alternately by two memory addressing circuits. One memory addressing circuit addresses out waveshape data values at a constant memory address advance rate corresponding to the fundamental frequency of an actuated keyboard switch. The second memory addressing circuit addresses out waveshape data points at a time variant memory advance rate. The two sets of read out waveshape data values are combined to produce a dual musical tone.

REFERENCES:
patent: 4633749 (1987-01-01), Fujimori et al.

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