Microphone arrangement

Details Microphone arrangement Microphone arrangement

1985-09-23

1988-06-21

Ng, Jin F.

Electrical audio signal processing systems and devices

Directive circuits for microphones

379387, 379419, 381157, 381168, 381169, H04R 108, H04R 132

Patent

active

047529610

ABSTRACT:
A microphone arrangement, suitable for a telephone handset, comprises an array of microphone transducers, conveniently pressure transducers arranged at the vertices of a cube. Signal processing circuitry derives from the transducer outputs signals representing the magnitude and direction of the pressure gradient of the sound field at the array. In response to these signals, the microphone transducer outputs are weighted so as to direct the directional sensitivity lobe of the microphone towards the source of the maximum sound detected thereby.

REFERENCES:
patent: 4316058 (1982-02-01), Christensen
patent: 4495643 (1985-01-01), Orban
patent: 4536887 (1985-08-01), Kaneda et al.

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