Estimation of Sound Source Number and Directions under a Multisource Reverberant Environment

Jwu-Sheng Hu, Chia-Hsin Yang
2010 EURASIP Journal on Advances in Signal Processing  
Sound source localization is an important feature in robot audition. This work proposes a sound source number and directions estimation method under a multisource reverberant environment. An eigenstructure-based generalized cross-correlation method is proposed to estimate time delay among microphones. A source is considered as a candidate if the corresponding time delay combination among microphones gives reasonable sound speed estimation. Under reverberation, some candidates might be spurious
more » ... ut their direction estimations are not consistent for consecutive data frames. Therefore, an adaptive K-means++ algorithm is proposed to cluster the accumulated results from the sound speed selection mechanism. Experimental results demonstrate the performance of the proposed algorithm in a real room.
doi:10.1155/2010/870756 fatcat:e5bynuqq4nhm5oto6vde36szwu