arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2008.03944eess.ASeess.SP
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在欠建模场景下改进基于分块的声学回声消除器

improving partition-block-based acoustic echo canceler in under-modeling scenarios

Wenzhi Fan, Jing Lu

AI总结:

针对基于分块的频域卡尔曼滤波器(PFKF)在欠建模场景下稳态解有偏差的问题,提出改进方案以保证最优稳态性能,仿真验证了其性能提升。

摘要:

近期,一种基于分块的频域卡尔曼滤波器(PFKF)被提出用于声学回声消除。与常规频域卡尔曼滤波器相比,PFKF采用分块结构,兼具收敛速度快和时间延迟低的特点。我们对PFKF的稳态行为进行了分析,发现当滤波器长度不足时,其稳态解存在偏差。据此,我们提出了一种有效的改进方案,该方案能够保证最优的稳态性能。我们开展了仿真实验,验证了所提方法性能的提升。

英文摘要:

Recently, a partitioned-block-based frequency-domain Kalman filter (PFKF) has been proposed for acoustic echo cancellation. Compared with the normal frequency-domain Kalman filter, the PFKF utilizes the partitioned-block structure, resulting in both fast convergence and low time-latency. We present an analysis of the steady-state behavior of the PFKF and found that it suffers from a biased steady-state solution when the filter is of deficient length. Accordingly, we propose an effective modification that has the benefit of the guaranteed optimal steady-state behavior. Simulations are conducted to validate the improved performance of the proposed method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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