Microphone-array apparatus and method for extracting desired sig

Details Microphone-array apparatus and method for extracting desired sig Microphone-array apparatus and method for extracting desired sig

1983-10-07

1985-08-20

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Directive circuits for microphones

179121D, 381 58, 381 94, H04R 122

Patent

active

045368872

ABSTRACT:
An acoustic signal is received by a plurality of microphone elements and their outputs are delayed by delay means and weighted and summed up by weighted summation means, obtaining a noise-reduced output. A fictitious desired signal is electrically generated and the weighting values of the weighted summation means is determined based on the fictitious desired signal and the outputs of the microphone elements when receiving substantially only noises.

REFERENCES:
patent: 3973089 (1976-08-01), Puckette
patent: 4122303 (1978-10-01), Chaplin et al.
patent: 4306113 (1981-12-01), Morton
patent: 4461025 (1974-07-01), Franklin

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