Delay-Performance Tradeoffs in Causal Microphone Array Processing
Delay-Performance Tradeoffs in Causal Microphone Array Processing
复制标题
因果麦克风阵列处理中的延迟性能权衡
DOI：
10.1109/iwaenc.2018.8521263
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
A. Singer
中科院分区：
文献类型：
--
作者：
R. Corey;N. Tsuda;A. Singer
在诸如助听器信号处理等实时听力增强应用中，必须以不超过几毫秒的延迟来处理声音，以使听者听起来自然。通过使用麦克风阵列在空间和时间上对声信号进行滤波，听音设备可以在更低的时延下获得更好的性能。这里，我们分析了用于麦克风阵列降噪的因果多通道维纳滤波器的时延和平方误差性能之间的权衡。我们计算了两种特殊情况下延迟误差曲线的精确表达式，并给出了真实世界麦克风阵列记录的实验结果。我们发现，时延-性能特性由信号的空间和时间相关结构共同决定。
In real-time listening enhancement applications, such as hearing aid signal processing, sounds must be processed with no more than a few milliseconds of delay to sound natural to the listener. Listening devices can achieve better performance with lower delay by using microphone arrays to filter acoustic signals in both space and time. Here, we analyze the tradeoff between delay and squared-error performance of causal multichannel Wiener filters for microphone array noise reduction. We compute exact expressions for the delay-error curves in two special cases and present experimental results from real-world microphone array recordings. We find that delay-performance characteristics are determined by both the spatial and temporal correlation structures of the signals.
影响因子：
14.9
作者：
Doclo, Simon;Kellermann, Walter;Nordholm, Sven
通讯作者：
Nordholm, Sven