Enhanced Partitioned Stereo Residual Echo Estimation

Stefan Goetze; Karl Dirk Kammeyer; Markus Kallinger; Alfred Mertins

doi:10.1109/ACSSC.2006.354971

Enhanced Partitioned Stereo Residual Echo Estimation

Stefan Goetze, Karl Dirk Kammeyer, Markus Kallinger, Alfred Mertins

Institute of Signal Processing

Abstract

For convenient hands-free telecommunication systems echo cancelers with a low delay are desirable. Since such systems have to cope with long room impulse responses (RIRs) common echo cancelation techniques often suffer from slow convergence or introduce large delays. An algorithm for acoustic echo cancelation (AEC) has to compensate the influence of RIRs of several thousand sampling points. Thus for frequency domain algorithms long DFT-lengths are needed to cover the whole influence of the RIRs. Approaches in the partitioned frequency domain overcome this drawback. Our contribution describes a combined echo cancelation system in the partitioned frequency domain containing a conventional stereo AEC enhanced by a post-filter which requires a reliable residual echo estimate. This contribution focuses on minimizing the estimation bias introduced by partitioned residual echo estimation. For this purpose an optimal smoothing factor for the residual echo differential system will be derived.

Original language	English
Title of host publication	2006 Fortieth Asilomar Conference on Signals, Systems and Computers
Number of pages	5
Publisher	IEEE
Publication date	01.12.2006
Pages	1326-1330
Article number	4176781
ISBN (Print)	1-4244-0784-2, 1-4244-0785-0
DOIs	https://doi.org/10.1109/ACSSC.2006.354971
Publication status	Published - 01.12.2006
Event	40th Asilomar Conference on Signals, Systems, and Computers - Pacific Grove, United States Duration: 29.10.2006 → 01.11.2006 Conference number: 72472

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Cite this

@inproceedings{05f8646cc9814c3d9bff4b524192b8d1,

title = "Enhanced Partitioned Stereo Residual Echo Estimation",

abstract = "For convenient hands-free telecommunication systems echo cancelers with a low delay are desirable. Since such systems have to cope with long room impulse responses (RIRs) common echo cancelation techniques often suffer from slow convergence or introduce large delays. An algorithm for acoustic echo cancelation (AEC) has to compensate the influence of RIRs of several thousand sampling points. Thus for frequency domain algorithms long DFT-lengths are needed to cover the whole influence of the RIRs. Approaches in the partitioned frequency domain overcome this drawback. Our contribution describes a combined echo cancelation system in the partitioned frequency domain containing a conventional stereo AEC enhanced by a post-filter which requires a reliable residual echo estimate. This contribution focuses on minimizing the estimation bias introduced by partitioned residual echo estimation. For this purpose an optimal smoothing factor for the residual echo differential system will be derived.",

author = "Stefan Goetze and Kammeyer, {Karl Dirk} and Markus Kallinger and Alfred Mertins",

year = "2006",

month = dec,

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doi = "10.1109/ACSSC.2006.354971",

language = "English",

isbn = "1-4244-0784-2",

series = "Conference Record - Asilomar Conference on Signals, Systems and Computers",

publisher = "IEEE",

pages = " 1326--1330",

booktitle = "2006 Fortieth Asilomar Conference on Signals, Systems and Computers",

note = "40th Asilomar Conference on Signals, Systems, and Computers, ACSSC '06 ; Conference date: 29-10-2006 Through 01-11-2006",

}

Goetze, S, Kammeyer, KD, Kallinger, M & Mertins, A 2006, Enhanced Partitioned Stereo Residual Echo Estimation. in 2006 Fortieth Asilomar Conference on Signals, Systems and Computers., 4176781, Conference Record - Asilomar Conference on Signals, Systems and Computers, IEEE, pp. 1326-1330, 40th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, California, United States, 29.10.06. https://doi.org/10.1109/ACSSC.2006.354971

Enhanced Partitioned Stereo Residual Echo Estimation. / Goetze, Stefan; Kammeyer, Karl Dirk; Kallinger, Markus et al.
2006 Fortieth Asilomar Conference on Signals, Systems and Computers. IEEE, 2006. p. 1326-1330 4176781 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

Research output: Chapters in Books/Reports/Conference Proceedings › Conference contribution › peer-review

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T1 - Enhanced Partitioned Stereo Residual Echo Estimation

AU - Goetze, Stefan

AU - Kammeyer, Karl Dirk

AU - Kallinger, Markus

AU - Mertins, Alfred

N1 - Conference code: 72472

PY - 2006/12/1

Y1 - 2006/12/1

N2 - For convenient hands-free telecommunication systems echo cancelers with a low delay are desirable. Since such systems have to cope with long room impulse responses (RIRs) common echo cancelation techniques often suffer from slow convergence or introduce large delays. An algorithm for acoustic echo cancelation (AEC) has to compensate the influence of RIRs of several thousand sampling points. Thus for frequency domain algorithms long DFT-lengths are needed to cover the whole influence of the RIRs. Approaches in the partitioned frequency domain overcome this drawback. Our contribution describes a combined echo cancelation system in the partitioned frequency domain containing a conventional stereo AEC enhanced by a post-filter which requires a reliable residual echo estimate. This contribution focuses on minimizing the estimation bias introduced by partitioned residual echo estimation. For this purpose an optimal smoothing factor for the residual echo differential system will be derived.

AB - For convenient hands-free telecommunication systems echo cancelers with a low delay are desirable. Since such systems have to cope with long room impulse responses (RIRs) common echo cancelation techniques often suffer from slow convergence or introduce large delays. An algorithm for acoustic echo cancelation (AEC) has to compensate the influence of RIRs of several thousand sampling points. Thus for frequency domain algorithms long DFT-lengths are needed to cover the whole influence of the RIRs. Approaches in the partitioned frequency domain overcome this drawback. Our contribution describes a combined echo cancelation system in the partitioned frequency domain containing a conventional stereo AEC enhanced by a post-filter which requires a reliable residual echo estimate. This contribution focuses on minimizing the estimation bias introduced by partitioned residual echo estimation. For this purpose an optimal smoothing factor for the residual echo differential system will be derived.

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DO - 10.1109/ACSSC.2006.354971

M3 - Conference contribution

SN - 1-4244-0784-2

SN - 1-4244-0785-0

T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers

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BT - 2006 Fortieth Asilomar Conference on Signals, Systems and Computers

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T2 - 40th Asilomar Conference on Signals, Systems, and Computers

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ER -

Enhanced Partitioned Stereo Residual Echo Estimation

Abstract

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