Method of detecting acoustic signal

Details Method of detecting acoustic signal Method of detecting acoustic signal

G - Physics

01

S

349/29

G01S 15/66 (2006.01) G10L 11/02 (2006.01) G10L 21/02 (2006.01) H04R 3/00 (2006.01)

Patent

CA 2011775

According to a method of detecting an acoustic signal, first and second sound receiving units are located at substantially the same position and are used to output signals having different target signal power to noise power ratios (S/N ratios). When a difference between the powers of the signals output from the first and second sound receiving units or a ratio of the power of the signal from the first sound receiving unit to that from the second sound receiving unit in a given period falls within a predetermined range, reception of the target signal within the given period is discriminated. The first sound receiving unit is an adaptive microphone array capable of controlling directivity characteristics in correspondence with a noise position.

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