DocumentCode :
3017424
Title :
An acoustic front-end for interactive TV incorporating multichannel acoustic echo cancellation and blind signal extraction
Author :
Reindl, Klaus ; Zheng, Yuanhang ; Lombard, Anthony ; Schwarz, Andreas ; Kellermann, Walter
Author_Institution :
Multimedia Commun. & Signal Process., Univ. of Erlangen-Nuremberg, Erlangen, Germany
fYear :
2010
fDate :
7-10 Nov. 2010
Firstpage :
1716
Lastpage :
1720
Abstract :
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.
Keywords :
acoustic signal processing; array signal processing; blind source separation; echo suppression; feature extraction; interactive television; microphones; speech recognition; acoustic front-end; blind signal extraction; distant-talking interface; interactive TV; microphone signal; multichannel acoustic echo cancellation; speech recognizer; speech signal extraction; sum beamformer; two-channel delay; Acoustics; Interference; Microphones; Noise; Speech; Speech recognition; TV;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
ISSN :
1058-6393
Print_ISBN :
978-1-4244-9722-5
Type :
conf
DOI :
10.1109/ACSSC.2010.5757833
Filename :
5757833
Link To Document :
بازگشت