Fernandez-Grande Efren, Xenaki Angeliki
Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark (DTU), Building 352, Ørsteds Plads, DK-2800 Kongens Lyngby, Denmark
J Acoust Soc Am. 2016 Feb;139(2):EL45-9. doi: 10.1121/1.4942546.
A wave expansion method is proposed in this work, based on measurements with a spherical microphone array, and formulated in the framework provided by Compressive Sensing. The method promotes sparse solutions via ℓ1-norm minimization, so that the measured data are represented by few basis functions. This results in fine spatial resolution and accuracy. This publication covers the theoretical background of the method, including experimental results that illustrate some of the fundamental differences with the "conventional" least-squares approach. The proposed methodology is relevant for source localization, sound field reconstruction, and sound field analysis.
本文提出了一种基于球形传声器阵列测量的波扩展方法，该方法在压缩感知提供的框架下进行公式化。该方法通过ℓ1范数最小化来促进稀疏解，从而使测量数据由少数基函数表示。这导致了良好的空间分辨率和精度。本出版物涵盖了该方法的理论背景，包括实验结果，这些结果说明了与“传统”最小二乘法的一些基本差异。所提出的方法适用于声源定位、声场重建和声场分析。
