1. A band-independent variable step size proportionate normalized subband adaptive filter algorithm.
- Author
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Yu, Yi and Zhao, Haiquan
- Subjects
- *
ADAPTIVE filters , *SIGNALS & signaling , *ECHO , *STEADY-state responses , *CONVERGENCE (Telecommunication) , *SIMULATION methods & models , *ALGORITHMS - Abstract
Proportionate-type normalized subband adaptive filter (PNSAF-type) algorithms are very attractive choices for echo cancellation. To further obtain both fast convergence rate and low steady-state error, in this paper, a variable step size (VSS) version of the presented improved PNSAF (IPNSAF) algorithm is proposed by minimizing the square of the noise-free a posterior subband error signals. A noniterative shrinkage method is used to recover the noise-free a priori subband error signals from the noisy subband error signals. Significantly, the proposed VSS strategy can be applied to any other PNSAF-type algorithm, since it is independent of the proportionate principles. Simulation results in the context of acoustic echo cancellation have demonstrated the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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