| 摘要 |
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.
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