A band-independent variable step size proportionate normalized subband adaptive filter algorithm

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• 作者：Yi Yu ^{yuyi_xyuan@163.com" class="auth_mail" title="E-mail the corresponding author} ; Haiquan Zhao ; ^{hqzhao_swjtu@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Proportionate-type normalized subband adaptive filter algorithm ; Variable step size ; Noniterative shrinkage method ; Acoustic echo cancellation
• 刊名：AEU - International Journal of Electronics and Communications
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：70
• 期：9
• 页码：1179-1186
• 全文大小：987 K

文摘

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.