Electronic synthesizer with variable/preset voice control

Details Electronic synthesizer with variable/preset voice control Electronic synthesizer with variable/preset voice control

1974-08-28

1976-04-06

Hix, L. T.

Music

Instruments

84 111, 84 113, 84 125, 84 126, 84DIG9, 84DIG20, G10H 104, G10H 502

Patent

active

039481395

ABSTRACT:
An electronic musical synthesizer generates tone signals coupled to a controllable bandpass filter and a controllable low-pass filter. A plurality of voice switches are individually selectable to couple preset control voltages to the filters, and to enable potentiometers which can be adjusted to generate control voltages to vary the frequency characteristics of the filters, control the octave of the tone signals, and to control a modulation oscillator. When a variable/preset switch is set to a preset state, the potentiometers are disconnected and auxiliary sections of the selected voice switch presets voltages for the oscillator, the octave circuit and the filters.

REFERENCES:
patent: 3479440 (1969-11-01), Martin et al.
patent: 3490327 (1970-01-01), Volpe
patent: 3493669 (1970-02-01), Elbrecht et al.
patent: 3510565 (1970-05-01), Morez
patent: 3519720 (1970-07-01), Bunger
patent: 3544694 (1970-12-01), Freeman
patent: 3590133 (1971-06-01), Schwartz et al.
patent: 3591699 (1971-07-01), Cutler
patent: 3591700 (1971-07-01), Neubauer et al.
patent: 3604829 (1971-09-01), Bunger

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