Spatial soundfield recording over a large area using an array of higher order microphones.

Prasanga Samarasinghe (ANU)

APPLIED SIGNAL PROCESSING SERIES

DATE: 2012-08-30
TIME: 10:00:00 - 11:00:00
LOCATION: RSISE Seminar Room, ground floor, building 115, cnr. North and Daley Roads, ANU
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ABSTRACT:
Recording and reproduction of spatial sound fields over a large area is an unresolved problem in acoustic signal processing. This is due to the inherent restriction in recording higher order harmonic components using practically realizable microphone arrays. As the frequency increases and as the region of interest becomes large the number of microphones needed in effective recording increases beyond practicality. In this presentation an arbitrary array of higher order microphones is proposed. We use sound field coefficient translation between origins to combine the distributed field recordings to a single sound field over the entire region. The robustness of the array is analysed by computing the White Noise Gain (WNG) for recording examples in (i) interior and (ii) exterior fields.
BIO:
Prasanga is a PhD student in the ASP group.