Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming

E. Warsitz, R. Haeb-Umbach, in: International Workshop on Acoustic Echo and Noise Control (IWAENC 2006), 2006.

Conference Paper | English
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Broadband adaptive beamformers, which use a narrowband SNR-maximization optimization criterion for noise reduction, typically cause distortions of the desired speech signal at the beamformer output. In this paper two methodsare investigated to control the speech distortion by comparing the eigenvector beamformer with a maximum likelihood beamformer: One is an analytic solution for the ideal case of absence of reverberation and the other one is a statistically motivated approach. We use the recently introduced gradient-ascent algorithm for adaptive principal eigenvector beamforming and then normalize the filter coefficient s by the proposed distortion control methods. Experimental results in terms of the achievable SNR gain and a perceptual speech quality measure are given for the normalized eigenvector beamformer and are compared to standard beamforming methods.
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International Workshop on Acoustic Echo and Noise Control (IWAENC 2006)
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Warsitz E, Haeb-Umbach R. Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming. In: International Workshop on Acoustic Echo and Noise Control (IWAENC 2006). ; 2006.
Warsitz, E., & Haeb-Umbach, R. (2006). Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming. In International Workshop on Acoustic Echo and Noise Control (IWAENC 2006).
@inproceedings{Warsitz_Haeb-Umbach_2006, title={Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming}, booktitle={International Workshop on Acoustic Echo and Noise Control (IWAENC 2006)}, author={Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2006} }
Warsitz, Ernst, and Reinhold Haeb-Umbach. “Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming.” In International Workshop on Acoustic Echo and Noise Control (IWAENC 2006), 2006.
E. Warsitz and R. Haeb-Umbach, “Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming,” in International Workshop on Acoustic Echo and Noise Control (IWAENC 2006), 2006.
Warsitz, Ernst, and Reinhold Haeb-Umbach. “Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming.” International Workshop on Acoustic Echo and Noise Control (IWAENC 2006), 2006.

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