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Inferring the location of reflecting surfaces exploiting loudspeaker directivity

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Inferring the location of reflecting surfaces exploiting loudspeaker directivity

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Samenvatting

Accurate sound field reproduction in rooms is often limited by the lack of knowledge of the room characteristics. Information about the room shape or nearby reflecting boundaries can, in principle, be used to improve the accuracy of the reproduction. In this paper, we propose a method to infer the location of nearby reflecting boundaries from measurements on a microphone array. As opposed to traditional methods, we explicitly exploit the loudspeaker directivity model (beyond omnidirectional radiation) and the microphone array geometry. This approach does not require noiseless timing information of the echoes as input, nor a tailored loudspeaker-wall-microphone measurement step. Simulations show the proposed model outperforms current methods that disregard directivity in reverberant environments.

OrganisatieMinisterie van Defensie - NLDA
AfdelingFaculteit Militaire Wetenschappen
LectoraatMilitair Technische Wetenschappen
Datum2020-08-20
TypeConferentiebijdrage
TaalEngels

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