Title :
A robust technique for sound source localization in consideration of room capacity
Author :
Suyama, Kenji ; Takahashi, Kota ; Hirabayashi, Ryuichi
Author_Institution :
Fac. of Eng., Sci. Univ. of Tokyo, Japan
Abstract :
This paper proposes a robust technique for a sound source localization based on the time difference of arrival in noisy or reverberant environments. A nonlinear minimization problem for estimating source positions is formulated as a constrained optimization problem in consideration of room capacity. Then, a penalty function for a feasible region of this problem is used as the objective function. As a result, only estimation results within the room can be obtained. It is shown by several experiments that, by using the technique, estimation accuracy can be improved more than 25%
Keywords :
acoustic noise; array signal processing; least squares approximations; minimisation; nonlinear estimation; parameter estimation; reverberation; speech processing; array signal processing; constrained optimization problem; microphone arrays; noisy environments; nonlinear least square problem; nonlinear minimization problem; penalty function; reverberant environments; room capacity; sound source localization; source position estimation; speech processing; time difference of arrival; Acoustic noise; Acoustical engineering; Constraint optimization; Filter bank; Least squares approximation; Microphone arrays; Microwave integrated circuits; Robustness; Signal processing; Working environment noise;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 2001 IEEE Workshop on the
Conference_Location :
New Platz, NY
Print_ISBN :
0-7803-7126-7
DOI :
10.1109/ASPAA.2001.969543
