SPATIO-TEMPORAL SIGNAL PREPROCESSING FOR MULTICHANNEL ACOUSTIC ECHO CANCELLATION

Echo Cancellation

Přednášející: Karim Helwani, Autoři: Karim Helwani, Sascha Spors, Herbert Buchner, Deutsche Telekom Laboratories / Technische Universität Berlin, Germany

Hands-free full-duplex communication systems require acoustic echo cancelers to reduce echoes. Multichannel sound reproduction enhances realism in virtual reality and multimedia communication systems. However, in the case of multichannel systems the acoustic echo cancellation problem is challenging because of the non-uniqueness of the solution in the least squares sense. Therefore, preprocessing techniques are required. Known preprocessing approaches act in the temporal domain. In this paper we propose an acoustic echo cancellation preprocessing stage which bases on the spatial diversity offered by massive multichannel reproduction systems.

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http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5946336

Informace o přednášce

Nahráno:	2011-05-26 15:25 - 15:45, Club A
Přidáno:	14. 6. 2011 21:35
Počet zhlédnutí:	43
Rozlišení videa:	1024x576 px, 512x288 px
Délka videa:	0:21:06
Audio stopa:	MP3 [7.21 MB], 0:21:06