Sound input apparatus

Details Sound input apparatus Sound input apparatus

1995-04-10

1997-10-07

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo sound pickup device

381 92, 381111, 381122, 367126, H04R 500, H04R 300

Patent

active

056756550

ABSTRACT:
A sound input apparatus according to the present invention subtracts, from the output signal from a first microphone, the output signal of a second microphone which is arranged in a manner different from that of the first microphone to output the subtracted signal and controls the level of the signal of the second microphone in response to the level of the subtracted signal. The sound input apparatus simply constructed in this way achieves a narrowed sound directivity when picking up sound and presents high-quality audio signal while keeping the influence of ambient noise to a minimum.

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