Electronic musical instrument having time multiplexed keying sys

Details Electronic musical instrument having time multiplexed keying sys Electronic musical instrument having time multiplexed keying sys

1980-04-28

1982-06-08

Truhe, J. V.

Music

Instruments

84 122, G10H 100

Patent

active

043333753

ABSTRACT:
A keying system for an electronic musical instrument incorporates time division multiplexing of the individual frequency component signals which are combined to synthesize musical notes or tones. A signal generator provides the fundamental and various harmonic frequency signals which are applied to a plurality of multiplexer circuits corresponding in number to the number of keys on the keyboard of the musical instrument. Activation of a key connects the multiplexer output signals from a corresponding one of the multiplexer circuits to a demultiplexer circuit on a common bus. Time slot signals control the multiplexers and demultiplexer to generate the desired tones corresponding to activated keys.

REFERENCES:
patent: 3916750 (1975-11-01), Uetrecht
patent: 4134321 (1979-01-01), Woron
patent: 4189970 (1980-02-01), Woron

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