Adaptive microphone array employing calibration signals: An analytical evaluation

被引：53

作者：

Nordholm, S ^{[1
]}

Claesson, I ^{[1
]}

Dahl, M ^{[1
]}

机构：

[1] Univ Karlskrona Ronneby, Dept Signal Proc, S-37225 Ronneby, Sweden

来源：

IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING | 1999年 / 7卷 / 03期

关键词：

microphone array; speech enhancement; Wiener filtering;

D O I：

10.1109/89.759030

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper gives an analytical description of an adaptive microphone array that facilitates a simple built-in calibration to the environment and instrumentation. This method, suggested for use in hands-free mobile telephones and speech recognition systems for cars, provides speech enhancement and acoustic echo-cancellation. The scheme offers several advantages, such as a simple calibration procedure, suppression of directional sources, versatile robust beamforming, and reduced target signal distortion. The analysis employs noncausal Wiener filters yielding compact and effective theoretical suppression limits.

引用

页码：241 / 252

页数：12

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