Quadriphonic sound pick-up and reproduction devices

Details Quadriphonic sound pick-up and reproduction devices Quadriphonic sound pick-up and reproduction devices

1975-01-31

1976-02-24

Olms, Douglas W.

1791004ST, 1791001TD, H04R 500

Patent

active

039405605

ABSTRACT:
A sound pick-up and reproducing system, comprising a first and a second pair of directional microphones respectively disposed at a first and a second given distance from the sonic scene to be transmitted, said second distance being greater than said first distance, said four microphones being closely coupled; the system is characterized in that the spacing between the microphones of the second pair is substantially less than that between the microphones of the first pair, and in that the angular divergence between the sound pick-up axes of the second pair is substantially less than the angular divergence between the sound pick-up axes of the first pair of microphones.

REFERENCES:
patent: 3686471 (1972-08-01), Takahashi
Audio, Mar. 1961, Stage Sound, by Richard S. Levy, pp. 26-28 and 59.
IRE Transactions on Audio, Enhanced Stereo, by Benson, May-June 1961, pp. 63- 65.

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