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Title: Beamformer configuration design in reverberant environments
Authors: Li, Z
Yiu, KFC 
Keywords: Hybrid descent method
LCMV beamforming
Microphone array configuration
Issue Date: 2015
Publisher: Pergamon Press
Source: Engineering applications of artificial intelligence, 2015 How to cite?
Journal: Engineering applications of artificial intelligence 
Abstract: Many speech-related products rely on the deployment of microphone arrays and standard regular configurations are often used. In enhancing speech quality, the placement of microphones is indeed an important factor. Moreover, for indoor applications, the room acoustics further increases the difficulty. In this paper, these problems are addressed. First, we define the LCMV beamformer design problem using estimated room impulse responses with reverberation. Then, we study the performance limit on the filter length and formulate the configuration design problem. Finally, we employ a hybrid descent method with the genetic algorithm for solving the design problem. Numerical examples demonstrate the effectiveness of the proposed method.
ISSN: 0952-1976
EISSN: 1873-6769
DOI: 10.1016/j.engappai.2015.04.015
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