Proceedings ArticleDOI
A new structure for sub-band acoustic echo canceler
J. Chen,H. Bes,Joos Vandewalle,P. Janssens +3 more
- pp 2574-2577
TLDR
A structure for the subband acoustic echo canceler is proposed that avoids filter banks in the sending line and the consequent delay and an additional adaptive filter is included.Abstract:
A structure for the subband acoustic echo canceler is proposed that avoids filter banks in the sending line and the consequent delay. In this arrangement of the filter banks, the conventional least-mean-square algorithm is modified and an additional adaptive filter is included. Simulation results are given, and a real application is reported. >read more
Citations
More filters
Journal ArticleDOI
Adaptive filtering in subbands with critical sampling: analysis, experiments, and application to acoustic echo cancellation
A. Gilloire,Martin Vetterli +1 more
TL;DR: In this article, an exact analysis of the critically subsampled two-band modelization scheme is given, and it is demonstrated that adaptive cross-filters between the subbands are necessary for modelization with small output errors.
Adaptive Filtering in Subbands with Critical Sampling: Analysis, Experiments, and Application to Acoustic
Andrk Gilloire,Martin Vetterli +1 more
TL;DR: An exact analysis of the critically subsampled two-band modelization scheme is given, and it is demonstrated that adaptive cross-filters between the subbands are necessary for modelization with small output errors.
Journal ArticleDOI
A new approach to subband adaptive filtering
S. Sandeep Pradham,V.U. Reddy +1 more
TL;DR: This paper proposes a new structure and a new formulation for adapting the filter coefficients based on polyphase decomposition of the filter to be adapted and is independent of the type of filter banks used in the subband decomposition.
Journal ArticleDOI
The hands-free telephone problem: an annotated bibliography
TL;DR: This annotated bibliography summarizes the attempts to solve the ‘hands-free’ telephone problem and suggests a comfortable solution that can be achieved without any restrictions to the electro acoustic system and - more importantly - without any loss of convenience to the user.
Journal ArticleDOI
An acoustic echo canceller using subband sampling and decorrelation methods
H. Yasukawa,S. Shimada +1 more
TL;DR: An acoustic echo canceller based on signal decorrelation and subband techniques is developed and the implementation of an acoustic subband echo canceer with high speech quality is demonstrated.
References
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Journal ArticleDOI
An adaptive echo canceller
TL;DR: A novel method is presented for echo-cancellation in long distance telephone connections by means of a replica of the echo synthesized and subtracted from the return signal and shown that under ideal conditions, the echo converges to zero.
Proceedings ArticleDOI
Experiments with sub-band acoustic echo cancellers for teleconferencing
TL;DR: Two variants of sub-band echo cancellers have been implemented and tested: one is based on the two-band splitting of the speech spectrum by a QMF (Quadrature Mirror Filters) pair; the other uses pseudo-QMF banks to achieve the best reduction of the global computations.
Journal ArticleDOI
Kompensation akustischer Echos in Frequenzteilbändern
TL;DR: In this article, a concept is discussed based on compensating echoes in subbands, along with a definition of the adaptation algorithm and the distance measure used the idea and the general concept are outlined.
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Adaptive filtering in subbands with critical sampling: analysis, experiments, and application to acoustic echo cancellation
A. Gilloire,Martin Vetterli +1 more