Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1975-02-27

1976-10-19

Witkowski, Stanley J.

Music

Instruments

84423, 84442, 84448, 84451, G10B 320, G10H 500

Patent

active

039864227

ABSTRACT:
The organ plays either a hexatonic scale or the diatonic scale on its front digitals. The organ has a tone transposition apparatus comprising a scale selector apparatus, a key selector apparatus and an absolute pitch changer switch. The key selector apparatus includes a hexachord key selector switch in cascade with a diatonic key selector switch. Each key selector switch is formed by two linear arrays of movable contacts sliding along two linear arrays of stationary contacts. Either of these key selector switches can be set to physically activate key signatures of written music. The key selector apparatus operates on the top octave of tones; lower tones are derived from the top octave by frequency division.

REFERENCES:
patent: 2484930 (1949-10-01), Cornelius
patent: 3023659 (1962-03-01), Bode
patent: 3030848 (1962-04-01), Wick
patent: 3141371 (1964-07-01), Coles
patent: 3674907 (1972-07-01), Derry
patent: 3865004 (1975-02-01), Coles

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