On the simultaneous design of broadband beamformer filters and configuration

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.3934/naco.2022019

M. Gao, Ka-Fai Cedric Yiu

引用次数: 0

Abstract

For signal enhancement, beamforming remains to be an essential technique for many applications. In the design process, the microphone locations are prescribed and the signal from a target location is being enhanced. While the filter coefficients can be readily optimized, it is found that the signal enhancement capability depends significantly on the array configuration. Therefore, it is advantageous to consider both filters and microphone positions as design variables. In this paper, this problem is addressed. We formulate the beamformer design problem as a non-linear least square problem and propose Gauss-Newton algorithm to update both filters and configuration simultaneously during iterations. We illustrate by several designs to demonstrate the effectiveness of the proposed method.

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宽带波束形成滤波器的同步设计与配置

为了增强信号，波束形成仍然是许多应用中必不可少的技术。在设计过程中，指定麦克风的位置，并对来自目标位置的信号进行增强。虽然滤波器系数可以很容易地优化，但发现信号增强能力在很大程度上取决于阵列的配置。因此，考虑滤波器和麦克风位置作为设计变量是有利的。本文对这一问题进行了探讨。我们将波束形成器设计问题化为非线性最小二乘问题，并提出高斯-牛顿算法在迭代过程中同时更新滤波器和配置。我们通过几个设计来说明所提出方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.