An iterative method for equalization of multichannel acoustic systems robust to system identification errors

Wancheng Zhang; Patrick A. Naylor

doi:10.1109/IWAENC.2016.7602899

An iterative method for equalization of multichannel acoustic systems robust to system identification errors

Wancheng Zhang, Patrick A. Naylor

School of Information and Electronics

Imperial College London

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

The use of an iterative method for equalization of acoustic systems, the channel estimates of which are obtained from supervised system identification (SSI), is investigated. An optimally-stopped weighted conjugate gradient (OS-WCG) algorithm is presented. In the presence of system identification errors (SIEs), a peak of weighted direct-to-reverberant ratio (WDRR) in the iterative process is shown. Then a method to estimate the iteration index of the peak is provided. Finally, a stopping condition for the iteration is proposed. Evaluation results show that using OS-WCG, an improvement up to 20 dB in C₅₀ and 0.141 s in T₃₀ can be achieved.

Original language	English
Title of host publication	2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509020072
DOIs	https://doi.org/10.1109/IWAENC.2016.7602899
Publication status	Published - 19 Oct 2016
Event	15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016 - Xi'an, China Duration: 13 Sept 2016 → 16 Sept 2016

Publication series

Name	2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016

Conference

Conference	15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016
Country/Territory	China
City	Xi'an
Period	13/09/16 → 16/09/16

Keywords

Dereverberation
Iterative equalization
Multichannel equalization

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10.1109/IWAENC.2016.7602899

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Zhang, W., & Naylor, P. A. (2016). An iterative method for equalization of multichannel acoustic systems robust to system identification errors. In 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016 Article 7602899 (2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWAENC.2016.7602899

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title = "An iterative method for equalization of multichannel acoustic systems robust to system identification errors",

abstract = "The use of an iterative method for equalization of acoustic systems, the channel estimates of which are obtained from supervised system identification (SSI), is investigated. An optimally-stopped weighted conjugate gradient (OS-WCG) algorithm is presented. In the presence of system identification errors (SIEs), a peak of weighted direct-to-reverberant ratio (WDRR) in the iterative process is shown. Then a method to estimate the iteration index of the peak is provided. Finally, a stopping condition for the iteration is proposed. Evaluation results show that using OS-WCG, an improvement up to 20 dB in C50 and 0.141 s in T30 can be achieved.",

keywords = "Dereverberation, Iterative equalization, Multichannel equalization",

author = "Wancheng Zhang and Naylor, {Patrick A.}",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016 ; Conference date: 13-09-2016 Through 16-09-2016",

year = "2016",

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doi = "10.1109/IWAENC.2016.7602899",

language = "English",

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Zhang, W & Naylor, PA 2016, An iterative method for equalization of multichannel acoustic systems robust to system identification errors. in 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016., 7602899, 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016, Institute of Electrical and Electronics Engineers Inc., 15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016, Xi'an, China, 13/09/16. https://doi.org/10.1109/IWAENC.2016.7602899

An iterative method for equalization of multichannel acoustic systems robust to system identification errors. / Zhang, Wancheng; Naylor, Patrick A.
2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7602899 (2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - An iterative method for equalization of multichannel acoustic systems robust to system identification errors

AU - Zhang, Wancheng

AU - Naylor, Patrick A.

PY - 2016/10/19

Y1 - 2016/10/19

N2 - The use of an iterative method for equalization of acoustic systems, the channel estimates of which are obtained from supervised system identification (SSI), is investigated. An optimally-stopped weighted conjugate gradient (OS-WCG) algorithm is presented. In the presence of system identification errors (SIEs), a peak of weighted direct-to-reverberant ratio (WDRR) in the iterative process is shown. Then a method to estimate the iteration index of the peak is provided. Finally, a stopping condition for the iteration is proposed. Evaluation results show that using OS-WCG, an improvement up to 20 dB in C50 and 0.141 s in T30 can be achieved.

AB - The use of an iterative method for equalization of acoustic systems, the channel estimates of which are obtained from supervised system identification (SSI), is investigated. An optimally-stopped weighted conjugate gradient (OS-WCG) algorithm is presented. In the presence of system identification errors (SIEs), a peak of weighted direct-to-reverberant ratio (WDRR) in the iterative process is shown. Then a method to estimate the iteration index of the peak is provided. Finally, a stopping condition for the iteration is proposed. Evaluation results show that using OS-WCG, an improvement up to 20 dB in C50 and 0.141 s in T30 can be achieved.

KW - Dereverberation

KW - Iterative equalization

KW - Multichannel equalization

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M3 - Conference contribution

AN - SCOPUS:84997523754

T3 - 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016

BT - 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016

Y2 - 13 September 2016 through 16 September 2016

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Zhang W, Naylor PA. An iterative method for equalization of multichannel acoustic systems robust to system identification errors. In 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016. Institute of Electrical and Electronics Engineers Inc. 2016. 7602899. (2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016). doi: 10.1109/IWAENC.2016.7602899

An iterative method for equalization of multichannel acoustic systems robust to system identification errors

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