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首页> 外文会议>4th International Symposium on Communications, Control and Signal Processing (ISCCSP 2010) >Spatial alignment of acoustic sources based on spherical harmonics radiation analysis
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Spatial alignment of acoustic sources based on spherical harmonics radiation analysis

机译：基于球谐辐射分析的声源空间对准

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摘要

The radiation pattern of sound sources such as loudspeakers, musical instruments, the human voice and machines is of importance in a wide range of applications. Recently, radiation analysis has been studied by measuring the sound field around the source using spherical microphone arrays, and computing the spherical harmonics spectrum of the radiated sound field. However, the latter may change with the positioning of the source inside the measurement array, leading to a potential difficulty in determining the acoustic radiation pattern consistently. This paper presents the theoretical analysis of the spherical harmonics spectrum of spatially translated sources, and proposes several measures for the deviation of sources from their acoustic center. These measures can then be used for spatial alignment of sources, overcoming inconsistency due to misalignment.
机译：诸如扬声器，乐器，人的声音和机器之类的声源的辐射图在广泛的应用中很重要。最近，已经通过使用球形麦克风阵列测量源周围的声场并计算辐射声场的球谐频谱来研究辐射分析。然而，后者可能随着源在测量阵列内的位置而改变，从而导致潜在地难以一致地确定声辐射图。本文介绍了空间平移声源的球谐频谱的理论分析，并提出了几种措施以防止声源偏离其声中心。然后可以将这些措施用于源的空间对齐，以克服由于未对齐而引起的不一致。

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