Music synthesizer

Music – Instruments

Patent

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Details

Other Related Categories

84 125, 84 126, 84 127, 84DIG8, 84DIG9, 84DIG19, G10H 106, G10H 506

Type

Patent

Status

active

Patent number

039864260

Description

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.

REFERENCES:
patent: 3570357 (1971-03-01), Adachi
patent: 3636231 (1972-01-01), Schrecongost et al.
patent: 3786166 (1974-01-01), Mieda
patent: 3828110 (1974-08-01), Colin
patent: 3881387 (1975-05-01), Kawakami
patent: 3886834 (1975-06-01), Okamoto
patent: 3886836 (1975-06-01), Hiyoshi
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

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