Microphone system for producing signals for quadraphonic reprodu

Details Microphone system for producing signals for quadraphonic reprodu Microphone system for producing signals for quadraphonic reprodu

1976-11-02

1978-06-20

Olms, Douglas W.

1791004ST, H04R 500

Patent

active

040963535

ABSTRACT:
A system including a compact array of microphones and signal-combining circuitry, especially suited for use with surround-sound sources, for producing two composite output signals corresponding to those required by a matrix-type quadraphonic system to establish the directional position of the sources. The outut signals from one embodiment of the system can be used directly to record an SQ-matrixed tape, or they can be applied to a disc cutter to produce an SQ record, and in another embodiment the output signals can be used directly to record a "regular matrix" (RM) tape or they can be applied to a disc cutter to produce an "RM" record. Thus, the disclosed systems perform the function of the conventional multi-microphone and encoding system for SQ or RM recording or broadcasting.

REFERENCES:
patent: 3787622 (1974-01-01), Itoh et al.
patent: 3856992 (1974-12-01), Cooper
patent: 3940560 (1976-02-01), Condamines

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