Method and apparatus for imitating speech characteristics of vox

Details Method and apparatus for imitating speech characteristics of vox Method and apparatus for imitating speech characteristics of vox

1976-11-08

1978-03-21

Jackmon, Edith S.

Music

Instruments

84 101, 84 111, 179 1SG, G10H 106, G10H 510

Patent

active

040796531

ABSTRACT:
In an electronic musical instrument, such as an electronic organ, the speech characteristics of Vox Humana and similar reed organ pipes are simulated by applying a repeating series of pulse groups separated from each other, which groups each contain a short sequence of two or more pulses, to a sharp cutoff low-pass filter for converting the series of pulse groups into a sound producing signal simulative of the sound signal produced by a Vox Humana or similar organ pipe. The repeating series of pulse groups is obtained by nonlinearly combining square wave tone signals from two or more different octaves of a conventional phase-locked tone generator. The synthesized repeating series of pulse groups, one series for each note of the instrument, are applied to a single low-pass filter, or grouped and applied to a small number of filters.

REFERENCES:
patent: 1823724 (1931-09-01), Carlson
patent: 2760132 (1956-08-01), Pawley
patent: 3000252 (1961-09-01), Wayne, Jr.
patent: 3723633 (1973-03-01), Adachi
patent: 4023455 (1977-05-01), Peterson
patent: 4043243 (1977-08-01), Peterson

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