麦克风阵列的最佳近场响应

Proceedings of 1997 Workshop on Applications of Signal Processing to Audio and Acoustics Pub Date : 1997-10-19 DOI:10.1109/ASPAA.1997.625630

J. G. Ryan, R. Goubran

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引用次数: 5

摘要

本文讨论了优化任意传声器阵列权值对近场目标定位的影响。与均匀加权的延迟和波束形成器相比，最佳近场权重显示为近场源提供增加的增益。由于约束优化，阵列增益的实际改进在靠近阵列的位置和相对于工作波长较小的传声器间距处显示最大。

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Optimum near-field response for microphone arrays

This paper describes the effects of optimizing the weights of an arbitrary microphone array for near-field target locations. Optimum near-field weights are shown to provide increased gain for near-field sources when compared to a uniformly weighted delay-and-sum beamformer. Practical improvements in array gain due to constrained optimization are shown to be greatest at locations close to the array and for microphone spacing which is small in relation to the operating wavelength.

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

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