A multiframe parametric Wiener filter for acoustic echo suppression

Conference contribution


Publication Details

Author(s): Huang H, Hofmann C, Kellermann W, Chen J, Benesty J
Publishing place: Xi'an, China
Publication year: 2016
Conference Proceedings Title: Int. Workshop on Acoustic Echo and Noise Control (IWAENC)
Pages range: 1-5
ISBN: 978-1-5090-2007-2
Language: English


Abstract

Acoustic echo arises due to the acoustic coupling between the loudspeaker and the microphone in a full-duplex voice communication device. How to reduce or eliminate echo has been an important problem in voice communications. This paper deals with this problem in the short-time Fourier transform (STFT) domain. An approach to acoustic echo suppression (AES) is developed, which uses a linear filter in every STFT subband. A non-parametric variable step-size (NPVSS) normalized-least-mean-square (NLMS) algorithm is used to estimate the echo signal in every STFT bin and time frame. We then define the desired output signal as the sum of the desired near-end speech and a residual echo component. A parametric Wiener filter (PWF) is subsequently derived by minimizing the near-end speech distortion with a constraint on the residual echo. There are two parameters in this PWF, which can be adjusted to control the compromise between the amount of echo attenuation and the degree of near-end speech distortion, and the level of the residual echo remaining at the output. These two parameters can be tuned to optimize the perceptual quality of the echo-reduced signal. Experimental results demonstrate that the developed PWF can effectively attenuate the undesired echo and estimate the near-end signal with
little distortion.


FAU Authors / FAU Editors

Hofmann, Christian
Professur für Nachrichtentechnik
Huang, Hai
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik


External institutions
Institut National de la Recherche Scientifique (INRS) de l'Université du Québec
Northwestern Polytechnical University / 西北工业大学 (NPU/NWPU)


How to cite

APA:
Huang, H., Hofmann, C., Kellermann, W., Chen, J., & Benesty, J. (2016). A multiframe parametric Wiener filter for acoustic echo suppression. In Int. Workshop on Acoustic Echo and Noise Control (IWAENC) (pp. 1-5). Xi'an, CN: Xi'an, China.

MLA:
Huang, Hai, et al. "A multiframe parametric Wiener filter for acoustic echo suppression." Proceedings of the International Workshop on Acoustic Signal Enhancement (IWAENC), Xi'an Xi'an, China, 2016. 1-5.

BibTeX: 

Last updated on 2019-19-04 at 03:10