Real-time conversion of sensor array signals into spherical harmonic signals with applications to spatially localised sub-band sound-field analysis

Leo McCormack*, Symeon Delikaris-Manias, Angelo Farina, Daniel Pinardi, Ville Pulkki

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

6 Citations (Scopus)

Abstract

This paper presents two real-time audio plug-ins for processing sensor array signals for sound-field visualisation. The first plug-in utilises spherical or cylindrical sensor array specifications to provide analytical spatial filters, which encode the array signals into spherical harmonic signals. The second plug-in utilises these intermediate signals to estimate the direction-of-arrival of sound sources, based on a spatially localised pressure-intensity (SLPI) approach. The challenge with the traditional pressure-intensity (PI) sound-field analysis, is that it performs poorly when presented with multiple sound sources with similar spectral content. Test results indicate that the proposed SLPI approach is capable of identifying sound source directions with reduced error in various environments, when compared to the PI method.

Original languageEnglish
Title of host publication144th Audio Engineering Society Convention 2018
PublisherAudio Engineering Society
Pages294-303
ISBN (Print)978-1-5108-6474-0
Publication statusPublished - 1 Jan 2018
MoE publication typeA4 Article in a conference publication
EventAudio Engineering Society Convention - Milan, Italy
Duration: 23 May 201826 May 2018
Conference number: 144

Conference

ConferenceAudio Engineering Society Convention
Abbreviated titleAES
CountryItaly
CityMilan
Period23/05/201826/05/2018

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