基于直接闭环辨识的反馈对消算法

2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100) Pub Date : 2000-06-05 DOI:10.1109/ICASSP.2000.859098

J. Hellgren, U. Forssell

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引用次数: 7

摘要

自适应滤波器可用于消除助听器的不良声反馈。本文研究的自适应算法利用助听器的输出和输入信号对声反馈路径进行连续跟踪。分析了二次范数下最优估计的偏差。结果表明，良好的输入信号模型对助听器的重要性，因为该模型的误差会在反馈路径的估计中引入偏差。

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Bias of feedback cancellation algorithms based on direct closed loop identification

An adaptive filter can be used to cancel the undesired acoustic feedback of hearing aids. The adaptive algorithm studied in this paper uses the output and input signal of the hearing aid to continuously track the acoustic feedback path. The bias of the optimal estimate with a quadratic norm is analyzed. The results show the importance of having a good model of the input signal to the hearing aid, as the error in this model will introduce bias in the estimate of the feedback path.

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来源期刊

2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100)

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