Title :
Adaptive filtering exploiting band-limited property of sound field in the wave domain
Author :
Emura, Satoru ; Hiwasaki, Yusuke ; Ohmuro, Hitoshi
Author_Institution :
NTT Media Intell. Labs., NTT Corp., USA
Abstract :
Massive multichannel sound reproduction is necessary for highly immersive full-duplex communication. Efficient echo cancellation between massive loudspeakers and microphones is indispensable, and wave-domain adaptive filtering reduces the computational complexity drastically. We propose to further reduce this complexity by exploiting the band-limited property that the sound field has in the space-time-frequency representation. Experimental evaluations support the applicability of the proposed method.
Keywords :
acoustic signal processing; adaptive filters; computational complexity; echo suppression; loudspeakers; microphones; sound reproduction; time-frequency analysis; band-limited property; computational complexity reduction; echo cancellation; highly immersive full-duplex communication; massive loudspeakers; massive multichannel sound reproduction; microphones; sound field; space-time-frequency representation; wave-domain adaptive filtering; Abstracts; Adaptive filters; Arrays; Microphones; adaptive filtering; space-time-frequency representation; wave domain;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on
Conference_Location :
Vancouver, BC
DOI :
10.1109/ICASSP.2013.6637723