System and process for sound source localization using...

Details System and process for sound source localization using... System and process for sound source localization using...

2003-06-16

2008-07-01

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S122000, C381S056000

Reexamination Certificate

active

07394907

ABSTRACT:
A system and process for sound source localization (SSL) utilizing beamsteering is presented. The present invention provides for improved beamsteering with less drain on system resources while providing accurate, real time results. To accomplish this, the present SSL system and process rejects as much as possible extraneous audio frames and analyzes only those frames exhibiting a well defined sound source. In addition, the number of beams is reduced as much as possible to save on processing time, but a full scan of the working volume is still made with the beams. And finally, interpolation is used to increase the precision of the technique.

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Ward, D., and R. Williamson, Particle filter beamforming for acoustic source localization in a reverberant environment,ICASSP2002, Orlando, Fl, May 2002.

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