Key transposing electronic organ

Details Key transposing electronic organ Key transposing electronic organ

1975-06-20

1977-11-15

Jackmon, E. S.

Music

Instruments

84 104, 84445, G01H 102, G10C 312

Patent

active

040580423

ABSTRACT:
A transposing electronic instrument wherein the clock frequency applied to control a top octave frequency generator is derived by comparing any single output of the generator with the response of a frequency reference circuit to that output, deriving a dc voltage representative of the difference in frequency of the input and output of the reference circuit and controlling the clock frequency from the dc voltage, thereby transposing all the outputs of the top octave frequency generator.

REFERENCES:
patent: 3610800 (1969-10-01), Deutsch
patent: 3800060 (1974-03-01), Hallman, Jr.
patent: 3824325 (1974-07-01), Obayashi et al.
patent: 3877337 (1974-04-01), Obayashi

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