Sound localization in reverberant environment based on the model of the precedence effect

Author

Huang, Jie ; Ohnishi, Noboru ; Sugie, Noboru

Author_Institution

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

Volume

46

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

842

Lastpage

846

Abstract

This paper presents a model-based method for sound localization of concurrent and continuous speech sources in 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 0.5-2 s and the accuracy was a few degrees in both environments

Keywords

acoustic generators; acoustic signal detection; anechoic chambers; filtering theory; speech processing; transient response; 0.5 to 2 s; anechoic chamber; azimuth histogram; concurrent and continuous speech sources; continuous speech sources; echo-avoidance model; echo-free onsets; fine structure time differences; impulse response; microphones; precedence effect; reverberant environment; sound localization; sound sources; time segment; zero-crossing points; Anechoic chambers; Azimuth; Floors; Histograms; Humans; Loudspeakers; Microphones; Psychoacoustic models; Speech; Time factors;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.650785

Filename

650785