Modeling the precedence effect for sound localization in reverberant environment

Author

Huang, Jie ; Ohnishi, Noboru ; Sugie, Noboru

Author_Institution

RIKEN, Inst. of Phys. & Chem. Res., Nagoya, Japan

Volume

1

fYear

1996

fDate

1996

Firstpage

633

Abstract

This paper presents a model-based method for sound localization of concurrent continuous speech sources in reverberant environment. The model of the precedence effect was proposed to detect echo-free onsets by specifying a typical impulse response pattern. Fine structure time differences, calculated by zero-crossing method, were integrated into an azimuth histogram by restrictions between three microphones. Two sound sources were localized in both an anechoic chamber and a normal room with strong reverberations. The time segment needed for localization was 0.5 to 2 seconds and the accuracy was about a few degrees in both environments

Keywords

acoustic generators; acoustic intensity measurement; acoustic signal processing; anechoic chambers; integration; transient response; 0.5 to 2 s; Fine structure time difference; accuracy; anechoic chamber; azimuth histogram; concurrent continuous speech sources; echo-free onsets; impulse response pattern; microphones; precedence effect; reverberant environment; sound localization; time segment; zero-crossing method; Acoustic reflection; Band pass filters; Delay effects; Filtering; Frequency; Histograms; Measurement errors; Microphones; Narrowband; Reverberation;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE

Conference_Location

Brussels

Print_ISBN

0-7803-3312-8

Type

conf

DOI

10.1109/IMTC.1996.507459

Filename

507459