Title :
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
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;
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
DOI :
10.1109/IMTC.1996.507459
