Circuit for musical instrument

Details Circuit for musical instrument Circuit for musical instrument

1975-12-10

1977-08-23

Jackmon, E. S.

Music

Instruments

84 101, 84DIG15, G10H 100, G10H 306

Patent

active

040432424

ABSTRACT:
An electronic circuit connected to and operated by the bass buttons of an accordion to simulate a string bass instrument. The circuit can be disposed in the accordion or remote from the accordion. Each button has a switch associated therewith which couples to means for generating a fixed frequency signal indicative of the actuated button. Signals over a two octave range may be generated and logic circuitry is provided to effectively expand the single octave of available buttons to greater than the single octave such as by a half octave expansion. Output circuitry shapes the output audio signals to allow more or less of the harmonics to pass. A special bass pluck circuit is also provided.

REFERENCES:
patent: 3402251 (1968-09-01), Bright
patent: 3555166 (1971-01-01), Gasser
patent: 3567838 (1971-03-01), Tennes
patent: 3837254 (1974-09-01), Southard
patent: 3929051 (1975-12-01), Moore

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