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An acoustic front-end for interactive TV incorporating multichannel acoustic echo cancellation and blind signal extraction

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5 Author(s)
Reindl, K. ; Multimedia Commun. & Signal Process., Univ. of Erlangen-Nuremberg, Erlangen, Germany ; Yuanhang Zheng ; Lombard, A. ; Schwarz, A.
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In this contribution, an acoustic front-end for distant-talking interfaces as developed within the European Union-funded project DICIT (Distant-talking interfaces for Control of Interactive TV) is presented. It comprises state-of-the-art multichannel acoustic echo cancellation and blind source separation-based signal extraction and only requires two microphone signals. The proposed scheme is analyzed and evaluated for different realistic scenarios when a speech recognizer is used as back-end. The results show that the system significantly outperforms simple alternatives, i.e., a two-channel Delay & Sum beamformer for speech signal extraction.

Published in:

Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar Conference on

Date of Conference:

7-10 Nov. 2010