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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hoshuyama, O. Goubran, R.A. Sugiyama, A. |
| Copyright Year | 2004 |
| Description | Author affiliation: Multimedia Res. Labs., NEC Corp., Japan (Hoshuyama, O.) |
| Abstract | This paper proposes a generalized proportionate variable step-size algorithm based on affine projection. It controls the step size for each tap individually based on the gradient approximated by the difference between the current coefficient and an averaged filter coefficient with delay. This step-size control is specifically effective for tracking fast changing acoustic environments. It is shown that the P-NLMS family and the ES algorithm are special cases of the proposed algorithm in terms of step-size control. Simulation results in the context of echo cancellation in artificial and real environments demonstrate that this step-size control combined with the affine projection algorithm (APA) reduces the echo by up to 5 dB compared to the standard APA. The best tracking performance, without a priori knowledge on the acoustic environment, among the same family of algorithms is obtained. |
| File Size | 501407 |
| File Format | |
| ISBN | 0780384849 |
| ISSN | 15206149 |
| DOI | 10.1109/ICASSP.2004.1326788 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-05-17 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Convergence Echo cancellers Projection algorithms Adaptive filters Size control Delay Microphone arrays Cellular phones Statistics Multimedia systems |
| Content Type | Text |
| Resource Type | Article |
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