1975-08-28
1976-10-19
Witkowski, Stanley J.
Music
Instruments
84 125, 84 126, 84 127, 84DIG8, 84DIG9, 84DIG19, G10H 106, G10H 506
Patent
active
039864260
ABSTRACT:
A music synthesizer produces pitch-proportional voltages in a novel resistor network, uses these voltage via keyboard control to generate in a voltage-controlled oscillator a high frequency signal, being a multiple of all the harmonic frequencies desired, separates the individual harmonics, converts them to sine waves with voltage-controlled tunable tracking filters, blends the waves in desired proportions, introduces transients of attack, decay, sustain, and release of key into each note, and introduces appropriate vibrato. An alternate apparatus accepts an external signal and converts it to voltages proportional to frequency, whereby accompaniment on pitch, in "close harmony" or more distantly related, is provided.
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patent: 3897709 (1975-08-01), Hiyoshi et al.
patent: 3902392 (1975-09-01), Nagahama
patent: 3902396 (1975-09-01), Hiyoshi
patent: 3922943 (1975-12-01), Niinomi
Morse Rollin D.
Witkowski Stanley J.
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