A linear operator for the computation of soundfield maps
Lucio Bianchi, V. Baldini Anastasio, Dejan Markovic, Fabio Antonacci, Augusto Sarti, Stefano Tubaro
Abstract
In the process of soundfield imaging, as defined in the literature, a microphone array is subdivided into overlapping sub-arrays and soundfield images are obtained by juxtaposition of spatial spectra computed from individual subarray data. In this paper we show that the whole process can be conveniently seen as a linear transformation applied to array data. This linear transformation embeds a nonlinear mapping to cast the directional information in a more convenient domain: the ray space. We show by simulations that the proposed formulation is suitable for fast implementation of the soundfield imaging operation, and, more specifically, for the localization of acoustic sources.
BibTeX
@inproceedings{icassp2016_alinearoperatorf,
title = {A linear operator for the computation of soundfield maps},
author = {Lucio Bianchi and V. Baldini Anastasio and Dejan Markovic and Fabio Antonacci and Augusto Sarti and Stefano Tubaro},
booktitle = {ICASSP 2016},
year = {2016}
}