1972-08-14
1976-06-08
Olms, Douglas W.
H04R 300
Patent
active
039625427
ABSTRACT:
A choral effect is produced by operating a sound source element to produce sound traveling in a sound chamber, operating a sound detector element to detect sound traveling in the chamber, and, effecting movement of at least one of the elements so as to vary detected sound frequency and quality. A panel element may also (or alternatively) be moved to vary detected sound frequency and quality.
REFERENCES:
patent: 2287105 (1942-06-01), Kannenberg
patent: 2489653 (1949-11-01), Leslie
patent: 2780302 (1957-02-01), George
patent: 3204722 (1965-09-01), Hare
patent: 3795770 (1974-03-01), Kato
Tremaine: Practical Sound Engineering, Radio & Television News, June, 1951, pp. 66-68, 84, 86.
Haefliger William W.
Olms Douglas W.
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