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Sound localization of concurrent and continuous speech sources in reverberant environment

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3 Author(s)
Jie Huang ; RIKEN, Inst. of Phys. & Chem. Res., Nagoya, Japan ; Ohnishi, N. ; Sugie, N.

This paper presents a model-based method for sound localization of concurrent and continuous speech sources in a reverberant environment. A new algorithm adopted from the echo-avoidance model of the precedence effect was used to detect the echo-free onsets by specifying a generalized pattern of impulse response. Fine structure time differences were calculated from the zero-crossing points in different microphones. They were integrated into an azimuth histogram by the restrictions between them. Two sound sources were localized in both an anechoic chamber and a normal room which has walls, floor and ceiling made of concrete. The time segment needed for localization was 0.5 to 2 seconds and the accuracy was a few degrees in both environments

Published in:

Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on

Date of Conference:

19-22, Oct 1997

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