助听器中自适应滤波器反馈抑制的一些注意事项

Proceedings of 1997 Workshop on Applications of Signal Processing to Audio and Acoustics Pub Date : 1997-10-19 DOI:10.1109/ASPAA.1997.625583

W. Knecht

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引用次数: 9

摘要

本文讨论了自适应滤波器在助听器反馈消除中的一些重要问题。我们总结了反反馈系统的主要优点，并对频域实现的优缺点进行了评论。讨论了自适应滤波器的长度，并对算法中重要的延迟元素进行了描述。最后，我们评论了在不相关的加性噪声存在下的自适应问题，在这种情况下，这些噪声是助听器所需的输入信号。

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Some notes on feedback suppression with adaptive filters in hearing aids

This paper discusses some important issues concerning feedback cancellation in hearing aids using adaptive filters. We summarize the main benefits of an anti-feedback system and comment on the pros and cons of a frequency-domain implementation. The length of the adaptive filter is dealt with and important delay elements in the algorithm are described. Finally, we comment on the problem of adaptation in the presence of uncorrelated additive noise which, in this case, is the desired input signal to the hearing aid.

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Proceedings of 1997 Workshop on Applications of Signal Processing to Audio and Acoustics

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