National Changhua University of Education Institutional Repository : Item 987654321/18336
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题名: Design of a Variable Step-size Filtering Algorithm for Acoustic Feedback Cancellation in Audio Systems
作者: Wu, Jian-Da;Lin, Hai-Ping;Hung, Ran-Jen
贡献者: 車輛科技研究所
关键词: Acoustic feedback;Adaptive filter;Affine-projection algorithm;Digital filter
日期: 2005-09
上传时间: 2014-04-29T07:26:53Z
出版者: World Scientific Publishing Co.
摘要: Acoustic feedback often limits the maximum usable gain of acoustic systems and degrades the overall system response. It is well known to be detrimental that the system stability and performance must be taken into account in system design. Most of the conventional methods for acoustic feedback cancellation in an acoustic system are based primarily on an adaptive filter with the least-mean-square (LMS) error algorithm. Unfortunately, convergence speed is often limited when a sound source or a filtering plant is varied, because the learning process of the adaptive algorithm fails to respond fast enough to changing operational conditions. This report proposes a variable step-size affine-projection algorithm (VSS APA) for acoustic feedback cancellation in audio systems. The proposed adaptive filter is based on the filtering affine-projection algorithm with variable step-size for improving convergence speed in acoustic feedback cancellation. A performance evaluation and simulation comparison has been conducted to compare the proposed algorithm and various traditional adaptive filtering algorithms.
關聯: Fluctuation and Noise Letters, 5(3): L387-L395
显示于类别:[車輛科技研究所] 期刊論文

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