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Filters
Performance improvement of acoustic ECHO cancellers in the presence of external volume change
2012
2012 IEEE International Conference on Emerging Signal Processing Applications
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This paper presents a new method for improving the performance of an acoustic echo canceller operating in a hands-free telephony context, where the terminal connects to an external amplifier whose volume ...
This change would normally results in the canceller loosing convergence, and temporarily causes an echo to be heard by the far side. ...
Two-path echo canceller The two-path echo cancellation technique is a common approach for handling common acoustic echo cancellation problems such as double-talk or sudden echo path changes [6] . ...
doi:10.1109/espa.2012.6152461
dblp:conf/espa/LeblancN12
fatcat:3hz6aze6t5eyjpd3uoanvpkdwm
Design and Implementation on a Sub-band based Acoustic Echo Cancellation Approach
2011
International Journal of Advanced Computer Science and Applications
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This paper describes the design and implementation of a sub-band based acoustic echo cancellation approach, which incorporates the normalized least mean square algorithm and the double talk detection algorithm ...
Since the proposed approach is implemented in fixpointed C, it can be easily ported into fixed-point DSPs to cancel acoustic echo in real systems. ...
In this paper, an acoustic echo cancellation system based on the sub-band approach and the NLMS algorithm is proposed. A double-talk detection algorithm is also included in the system. ...
doi:10.14569/ijacsa.2011.020606
fatcat:wtjsxom6rzgb5hp4yzrb7orxre
A real-time implementation of a stereophonic acoustic echo canceler
2001
IEEE Transactions on Speech and Audio Processing
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The fundamental difficulty of stereophonic acoustic echo cancellation is described and an echo canceler based on a fast recursive least squares (FRLS) algorithm in a subband structure, with equidistant ...
Index Terms-Real-time implementation, recursive least squares (RLS), stereophonnic acoustic echo cancellation, subband filtering. P. Eneroth is with the ...
Two-Path Adaptive Filter In situations of large disturbances, for example double-talk, or if the adaptive filter becomes unstable, the filter may diverge from a good estimate. ...
doi:10.1109/89.928916
fatcat:frzbajx6drbdram55z3tcxyabq
Echo Cancellation for Hands-Free Systems
[chapter]
2011
Adaptive Filtering
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Normalized subband adaptive filter In J. ...
Some solutions for real-time acoustic echo cancellation based on adaptive filtering techniques, on digital signal processors were described in detail. ...
doi:10.5772/19238
fatcat:svjqqpuesjctpisyz2rp47twm4
Acoustic Echo Cancelation for High Noise Environments
2006
2006 IEEE International Conference on Multimedia and Expo
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Acoustic echo cancellation (AEC) is highly imperative for enhanced communication in noisy environments such as a car or a conference room. ...
We propose the momentum normalized least mean square (MNLMS) algorithm for smooth adaptation and we implement the NLMS algorithm for fast adaptation. ...
This property was used to develop a double talk detector in [6] . We adopt the double talk detection algorithm of [6] , but use it only as a convergence detector. ...
doi:10.1109/icme.2006.262666
dblp:conf/icmcs/ChhetriSF06
fatcat:trdzi6eehnaallion34dnza3zy
Low-Complexity Network Echo Cancellation Approach for Systems Equipped With External Memory
2011
IEEE Transactions on Audio, Speech, and Language Processing
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adaptive double-talk detector to form a complete solution for echo cancellation. ...
In this paper, an approach for detecting dispersive regions of a sparse impulse response and a proportionate normalized least mean square (PNLMS)-based selective updating approach are combined with an ...
Fig. 13 . 13 Single-talk situation with a long impulse response and a too short adaptive echo-cancellation filter. ...
doi:10.1109/tasl.2011.2144972
fatcat:iowedol76bdwrhnvbbq2te57pe
Family of Parallel LMS-based Adaptive Algorithms of Echo Cancellation
2015
Computational Methods in Science and Technology
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In this paper we propose a number of new, genuine parallel LMS-based adaptive algorithms in the context of their use in the acoustic echo cancellation. ...
The most complex parts of the LMS-based algorithms were determined and parallelized. ...
The diagram of parallel ParPNLMS for the selected processor with the id p index -processor CREW PRAM machine has been presented in Figure 7 . ...
doi:10.12921/cmst.2015.21.04.003
fatcat:rwjumnve55hp5asd74bfnv32ai
Multichannel Bin-Wise Robust Frequency-Domain Adaptive Filtering and Its Application to Adaptive Beamforming
2007
IEEE Transactions on Audio, Speech, and Language Processing
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, as for example, in adaptive beamforming for speech and audio signal acquisition or acoustic echo cancellation. ...
In this paper, we present impulsive noise robust multichannel frequency-domain adaptive filters (MC-FDAFs) based on outlier-robust -estimation using a Newton algorithm and a discrete Newton algorithm, ...
ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their helpful comments and suggestions. ...
doi:10.1109/tasl.2007.894530
fatcat:os7d7u74hngcbaa4tf6hsjmgu4
Stereophonic hands-free communication system based on microphone array fixed beamforming: real-time implementation and evaluation
2012
EURASIP Journal on Audio, Speech, and Music Processing
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In this article, the authors propose an optimally designed fixed beamformer (BF) for stereophonic acoustic echo cancelation (SAEC) in real hands-free communication applications. ...
real-time SAEC system both for echo reduction and stereophonic audio rendering is first addressed in this contribution. ...
Moreover, a special thanks goes to Emanuele Principi (Università Politecnica delle Marche, Italy) for support in featuring and handling the software platform used for subjective tests. ...
doi:10.1186/1687-4722-2012-26
fatcat:accscbeupbczrcbsw76ib3s4hq
The complex subband decomposition and its application to the decimation of large adaptive filtering problems
2002
IEEE Transactions on Signal Processing
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Using conditions on the analysis and synthesis filters, the formulas for the subband components and their respective properties are developed. ...
Simulation results for an acoustic echo cancellation example are given to support the developed theory. * J. Reilly (corresponding author) ph: 905 525 9140 x22895, fax: 905 521 2922, ...
Acknowledgments The authors wish to acknowledge and thank the following institutions for their support of this project: Mitel Corporation, Kanata, Ontario, Canada; The Centre for Information Technology ...
doi:10.1109/tsp.2002.804068
fatcat:picdth5ko5cf3cizgsgivvg5za
Residual feedback suppression with extended model-based postfilters
2021
EURASIP Journal on Audio, Speech, and Music Processing
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In many applications, feedback cancelation based on adaptive filters is used for this purpose. ...
In this work, we present enhancements for model-based postfilters based on a priori knowledge of the feedback path which can be used cooperatively with the adaptive filter-based feedback cancelation system ...
Authors' contributions MG and PB have conducted the research and analyzed the data. MG, PB, and GS authored the paper. All authors read and approved the final manuscript. ...
doi:10.1186/s13636-021-00205-8
fatcat:nvqnx6rrarex7j6fd6uc7xvgzq
Immersive Audio Schemes
2011
IEEE Signal Processing Magazine
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This need offers great opportunities for multichannel acoustic and speech signal processing, and for new ideas of voice communication services infrastructure. ...
fter more than a century of accelerated advances in telecommunication technologies, people are no longer satisfied with talking to someone over a long distance and in real time. ...
Fred Juang for his inspiring discussions with us, and the three anonymous reviewers for their helpful criticisms and comments on an earlier draft, which have greatly improved the quality of this article ...
doi:10.1109/msp.2010.938754
fatcat:hupszrodcvak5byb4ds7xygcf4
Active noise control: a tutorial review
1999
Proceedings of the IEEE
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In this paper, the basic adaptive algorithm for ANC is developed and analyzed based on single-channel broad-band feedforward control. ...
This algorithm is then modified for narrow-band feedforward and adaptive feedback control. In turn, these single-channel ANC algorithms are expanded to multiple-channel cases. ...
the antinoise, the adaptation of the feedback neutralization filter must be inhibited when the ANC system is in operation, similar to adaptive echo cancellation during periods of double talk. ...
doi:10.1109/5.763310
fatcat:uvjlluuhbzdbpo6wr4kjj4mvea
Fifty Years of Acoustic Feedback Control: State of the Art and Future Challenges
2011
Proceedings of the IEEE
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| The acoustic feedback problem has intrigued researchers over the past five decades, and a multitude of solutions has been proposed. ...
a glance at the challenges for future research. ...
[25] , [26] further improved the subband howling detection, by first performing a howling detection in relatively wide subbands, and subsequently dividing the most critical subband in narrower subbands ...
doi:10.1109/jproc.2010.2090998
fatcat:cxbq3pme65hudgpwe4w3sxeeja
Speech enhancement in discontinuous transmission systems using the constrained-stability least-mean-squares algorithm
2008
Journal of the Acoustical Society of America
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In this paper a novel constrained-stability least-mean-squares ͑LMS͒ algorithm for filtering speech sounds is proposed in the adaptive noise cancellation ͑ANC͒ problem. ...
LMS ͑NLMS͒, and other recently reported LMS algorithms such as the modified NLMS, the error nonlinearity LMS, or the normalized data nonlinearity LMS adaptation. ...
Improving adaptive noise canceler using VAD. 1
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1
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adapt
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adapt
TABLE I . ...
doi:10.1121/1.3003933
pmid:19206795
fatcat:vsmxmejlovd2dmzjgqpkdhnsxm
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