Microphone apparatus

Details Microphone apparatus Microphone apparatus

1990-11-13

1993-03-09

Ng, Jin F.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

381 92, 381 94, H03B 2900

Patent

active

051931176

ABSTRACT:
A microphone apparatus using two microphones has a circuit for processing output signals of the two microphones so as to obtain non-directional characteristics in a low frequency region and uni-directional characteristics in a high frequency region. When this microphone apparatus is incorporated in an appliance containing an acoustic noise source and vibration source therein, acoustic noise, vibration noise and wind noise are reduced to prevent a reduction of the S/N ratio when picking up the sound, so that the recording of an excellent quality sound can be realized.

REFERENCES:
patent: 4703506 (1987-10-01), Sakamoto et al.

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