Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction

Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction
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感知声场重建多通道系统分析与设计

DOI:
10.1109/tasl.2013.2260152
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发表时间:
2013
期刊:
IEEE Transactions on Audio, Speech, and Language Processing
影响因子:
--
通讯作者:
De Sena E
De Sena E
中科院分区:
--
文献类型:
--
作者:
De Sena E

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本文提出了一个分析和设计环形多声道环绕声系统的系统框架。基于主动强度场概念的客观分析表明,对于单色平面波的稳定再现,不超过两个通道再现每个单色平面波是有利的。基于这一发现,我们提出了一种设计圆形麦克风阵列的方法,其配置与相应的扬声器系统相同,其目的是捕获通道间的时间和强度差异,以确保准确再现听觉视角。该方法适用于规则和不规则的麦克风/扬声器布局,以及广泛的麦克风阵列半径,包括符合阵列的特殊情况下,对应于基于强度的系统。几个设计的例子,涉及第一和高阶麦克风。正式收听测试的结果表明,所提出的设计方法在扬声器阵列的中心实现了与现有技术相当的性能,并且远离中心实现了更优雅的降级。
This paper presents a systematic framework for the analysis and design of circular multichannel surround sound systems. Objective analysis based on the concept of active intensity fields shows that for stable rendition of monochromatic plane waves it is beneficial to render each such wave by no more than two channels. Based on that finding, we propose a methodology for the design of circular microphone arrays, in the same configuration as the corresponding loudspeaker system, which aims to capture inter-channel time and intensity differences that ensure accurate rendition of the auditory perspective. The methodology is applicable to regular and irregular microphone/speaker layouts, and a wide range of microphone array radii, including the special case of coincident arrays which corresponds to intensity-based systems. Several design examples, involving first and higher-order microphones are presented. Results of formal listening tests suggest that the proposed design methodology achieves a performance comparable to prior art in the center of the loudspeaker array and a more graceful degradation away from the center.
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