| Paper: | AE-P6.3 | ||
| Session: | Spatial and Multichannel Audio | ||
| Time: | Friday, May 19, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Audio and Electroacoustics: Spatial and Multichannel Audio | ||
| Title: | Sound Field Analysis with a Two-dimensional Microphone Array | ||
| Authors: | Mathieu Guillaume, Yves Grenier, ENST / GET, France | ||
| Abstract: | Sound field analysis is performed using a microphone array in order to extract spatial information. In this article, the use of the multidimensional Fourier transform is emphasized to perform the analysis. Indeed, the finite number of microphones inevitably introduces spatial aliasing, which is linked to the spectral broadening due to the finite discrete nature of the analysis window. First, given the geometry of the array, the hypothesis that sound fields satisfie the dispersion relation of the wave equation is used to design an optimal analysis window, which minimizes spatial aliasing according to a criterion inspired by prolate spheroidal spectral analysis. Then, several array geometries are compared to analyze broadband sound fields. | ||
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