Apparatus and method for detecting sound direction

Details Apparatus and method for detecting sound direction Apparatus and method for detecting sound direction

2004-05-18

2008-08-05

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S056000, C381S122000

Reexamination Certificate

active

07409065

ABSTRACT:
An apparatus and method for detecting sound direction is disclosed, which utilizes a plurality of sound source detecting units to receive a plurality of sound signals form a sound source. The sound source detecting units amplify and filter the sound wave signals to obtain a plurality of amplified sound signals, and transform the amplified sound signals to a plurality of pulse signals for being outputted a processing unit. The processing unit samples the pulse signals to obtain a plurality of sampling signal sequences, and computes a plurality of time differences based on the sampling signal sequences to detect the position of the sound source via looking up a table based on the time differences.

REFERENCES:
patent: 4581758 (1986-04-01), Coker et al.
patent: 4898179 (1990-02-01), Sirota
patent: 2004/0037437 (2004-02-01), Symons et al.

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