Optimization of temporally diffuse impulses for decorrelation of multiple discrete loudspeakers

Hdl Handle:
http://hdl.handle.net/10545/621810
Title:
Optimization of temporally diffuse impulses for decorrelation of multiple discrete loudspeakers
Authors:
Moore, Jonathan B.; Hill, Adam J.
Abstract:
Temporally diffuse impulses (TDIs) were originally developed for large arrays of distributed mode loudspeakers to achieve even radiation patterns. This initial investigation evaluates the performance of TDIs in terms of the reduction of low frequency spatial variance across an audience area when used with conventional loudspeakers. A novel variable decay windowing method is presented, allowing users control of TDI performance and perceptibility. System performance is modelled using an anechoic and an image source acoustic model. Results in the anechoic model show a mean spatial variance reduction of 42%, with a range of source material and using the optimal TDI generation methodology. Results in the image source model are more variable, suggesting that coherence of source reflections reduces static TDI effectiveness.
Affiliation:
University of Derby
Citation:
Moore, J. B. and Hill, A. J. (2017) 'Optimization of temporally diffuse impulses for decorrelation of multiple discrete loudspeakers'. Proceedings of the 142nd Convention of the Audio Engineering Society, Berlin, Germany. 20-23rd May.
Publisher:
Audio Engineering Society
Journal:
Journal of the Audio Engineering Society
Issue Date:
23-May-2017
URI:
http://hdl.handle.net/10545/621810
Additional Links:
http://www.aes.org/e-lib/browse.cfm?elib=18668; http://aesberlin17.mapyourshow.com/7_0/sessions/session-details.cfm?ScheduleID=247
Type:
Article
Language:
en
Sponsors:
N/A
Appears in Collections:
Department of Electronics, Computing & Maths

Full metadata record

DC FieldValue Language
dc.contributor.authorMoore, Jonathan B.en
dc.contributor.authorHill, Adam J.en
dc.date.accessioned2017-08-08T13:42:05Z-
dc.date.available2017-08-08T13:42:05Z-
dc.date.issued2017-05-23-
dc.identifier.citationMoore, J. B. and Hill, A. J. (2017) 'Optimization of temporally diffuse impulses for decorrelation of multiple discrete loudspeakers'. Proceedings of the 142nd Convention of the Audio Engineering Society, Berlin, Germany. 20-23rd May.en
dc.identifier.urihttp://hdl.handle.net/10545/621810-
dc.description.abstractTemporally diffuse impulses (TDIs) were originally developed for large arrays of distributed mode loudspeakers to achieve even radiation patterns. This initial investigation evaluates the performance of TDIs in terms of the reduction of low frequency spatial variance across an audience area when used with conventional loudspeakers. A novel variable decay windowing method is presented, allowing users control of TDI performance and perceptibility. System performance is modelled using an anechoic and an image source acoustic model. Results in the anechoic model show a mean spatial variance reduction of 42%, with a range of source material and using the optimal TDI generation methodology. Results in the image source model are more variable, suggesting that coherence of source reflections reduces static TDI effectiveness.en
dc.description.sponsorshipN/Aen
dc.language.isoenen
dc.publisherAudio Engineering Societyen
dc.relation.urlhttp://www.aes.org/e-lib/browse.cfm?elib=18668en
dc.relation.urlhttp://aesberlin17.mapyourshow.com/7_0/sessions/session-details.cfm?ScheduleID=247en
dc.subjectDigital signal processingen
dc.subjectAudio engineeringen
dc.subjectAcousticsen
dc.subjectPsychoacousticsen
dc.subjectSpatial audioen
dc.titleOptimization of temporally diffuse impulses for decorrelation of multiple discrete loudspeakersen
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalJournal of the Audio Engineering Societyen
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