采用紧框架心形阵列的宽带声强方向估计

中文摘要 AI 辅助

本研究通过实验探究利用成对心形麦克风进行声源方向估计，重点关注被称为紧框架的均衡布置方案。在6个或24个麦克风位置测量脉冲响应，考察两种对向配对间距。对所得阵列在单一声源、来自两个正交方向的相干波干扰、以及存在多方向干扰波时的方向跟踪三种场景下进行评估。结果表明可实现50Hz至20kHz的宽带声强方向估计，24个麦克风的布置方案及较短间距通常能产生更小的误差。

英文摘要

This study experimentally investigates source-direction estimation from acoustic intensity using paired cardioid microphones, with particular emphasis on well-balanced arrangements known as tight frames. Impulse responses were measured at 6 or 24 microphone positions, and two opposed-pair spacings were examined. The resulting arrays were evaluated for a single source, coherent interference between waves arriving from two orthogonal directions, and directional tracking in the presence of interfering waves from multiple directions. The results demonstrate broadband acoustic-intensity direction estimation from 50 Hz to 20 kHz, with the 24-microphone arrangement and the shorter spacing generally providing smaller errors.

发表机构

• Faculty of Design, Kyushu University（九州大学设计学院）

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