Music – Instruments
Patent
1975-03-26
1976-05-11
Hix, L. T.
Music
Instruments
84115, 340365S, G10H 102, G10H 500
Patent
active
039554600
ABSTRACT:
An electronic musical instrument, such as an organ, includes a multiplexing system for simultaneously scanning key switches on all of the manual keyboards and pedalboards sequentially an octave at a time and further for simultaneously and sequentially scanning all coupler controls to produce a digital output signal having pre-assigned positions for each of the different notes represented by operation of a coupler switch or a key switch in all of the coupler control sections and the keyboard sections of the organ. This digital signal is supplied to de-multiplexer keyer circuits for reproducing sound signals supplied to the output loudspeakers of the organ. The digital signal is sampled simultaneously in de-multiplexer/keyer circuits (for flute, chiff, celeste, swell string, great string) once each cycle thereof by a strobe pulse which is displayed by differing amounts prior to its application to different ones of the keyers to compensate for the different numbers and range of tones reproduced by the keyer circuits. This is done to correlate and align the tones reproduced by the different keyer circuits for producing the composite of tones supplied to the loudspeakers.
REFERENCES:
patent: 3297812 (1967-01-01), Cordry
patent: 3610799 (1971-10-01), Watson
patent: 3610800 (1971-10-01), Deutsch
patent: 3614287 (1971-10-01), Klann
patent: 3696201 (1972-10-01), Arsem et al.
patent: 3697661 (1972-10-01), Deutsch
patent: 3743755 (1973-07-01), Watson
patent: 3746773 (1973-07-01), Uetrecht
patent: 3871247 (1975-03-01), Bonham
patent: 3875842 (1975-04-01), Kmetz
patent: 3899951 (1975-08-01), Griffith et al.
patent: 3902395 (1975-09-01), Avant
patent: 3902397 (1975-09-01), Morez et al.
C. G. Conn Ltd.
Hix L. T,.
Ptak LaValle D.
Witkowski Stanley J.
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