Sparse acoustic imaging with a spherical array

Efren Fernandez Grande (Invited author), Angeliki Xenaki (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In recent years, a number of methods for sound source localization and sound field reconstruction with spherical microphone arrays have been proposed. These arrays have properties that are potentially very useful, e.g. omni-directionality, robustness, compensable scattering, etc. This paper proposes a plane wave expansion method based on measurements with a spherical microphone array, and solved in the framework provided by Compressed Sensing. The proposed methodology results in a sparse solution, i.e. few non-zero coefficients, and it is suitable for both source localization and sound field reconstruction. In general it provides fine spatial resolution for localization (delta-like functions), and robust reconstruction (the noisy components are naturally suppressed). The validity and performance of the proposed method is examined, and its limitations as well as the underlying assumptions are addressed.
Original languageEnglish
Title of host publicationProceedings of EuroNoise 2015
Publication date2015
Pages925-930
Publication statusPublished - 2015
EventEuroNoise 2015: 10th European Congress and Exposition on Noise Control Engineering - Maastrict, Netherlands
Duration: 31 May 20153 Jun 2015

Conference

ConferenceEuroNoise 2015
CountryNetherlands
CityMaastrict
Period31/05/201503/06/2015

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