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Title: Beamformer configuration design in reverberant environments
Authors: Li, Z 
Yiu, KFC 
Issue Date: Jan-2016
Source: Engineering applications of artificial intelligence, Jan. 2016, v. 47, p. 81-87
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.
Keywords: Hybrid descent method
LCMV beamforming
Microphone array configuration
Reverberation
Publisher: Pergamon Press
Journal: Engineering applications of artificial intelligence 
ISSN: 0952-1976
EISSN: 1873-6769
DOI: 10.1016/j.engappai.2015.04.015
Rights: © 2015 Elsevier Ltd. All rights reserved.
© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
The following publication Li, Z., & Yiu, K. F. C. (2016). Beamformer configuration design in reverberant environments. Engineering Applications of Artificial Intelligence, 47, 81-87 is available at https://doi.org/10.1016/j.engappai.2015.04.015.
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