Noise reducing system for voice microphones

Details Noise reducing system for voice microphones Noise reducing system for voice microphones

1988-06-07

1991-09-03

Isen, Forester W.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

381 94, G10K 1116

Patent

active

050461036

ABSTRACT:
A conventional voice microphone placed in non-critical spaced relation to a source of intelligible speech sound while exposed to an acoustical field of ambient noise, electrically transmits output signals attenuated under control of a signal processing controller to which a sampled input of noise signals is fed by a reference microphone exposed to the same acoustical noise field as the voice microphone for audio reproduction of the speech sound without background noise by programming of the controller.

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patent: 4658426 (1987-04-01), Chabries et al.
patent: 4683590 (1987-07-01), Miyoshi et al.
Seventh Annual Asilomar Conference on Circuits Systems and Computers, Pacific Grove, Calif., U.S.A., 7-9, Nov., 1977.

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