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dc.contributor.authorHill, Adam J.
dc.contributor.authorHawksford, Malcolm O. J.
dc.date.accessioned2012-06-15T14:42:28Z
dc.date.available2012-06-15T14:42:28Z
dc.date.issued2011-11
dc.identifier.citationJAES, vol. 59, no. 11, pp. 825-834, November 2011.en
dc.identifier.urihttp://hdl.handle.net/10545/229151
dc.description.abstractSmall room acoustics are characterized by a limited number of dominant low-frequency room-modes that result in wide spatio-pressure variations that traditional room correction systems may find elusive to correct over a broad listening area. A psychoacoustic-based methodology is proposed whereby signal components coincident only with problematic modes are filtered and substituted by virtual bass components to forge an illusion of the suppressed frequencies. Although this approach can constitute a standalone correction system, the impetus for development is for use within well-established correction methodologies. A scalable and hierarchical approach is studied using subjective evaluation to confirm uniform wide-area performance. Bass synthesis exploits parallel nonlinear and phase vocoder generators with outputs blended as a function of transient and steady-state signal content.
dc.language.isoen_USen
dc.publisherAudio Engineering Societyen
dc.relation.urlhttp://www.aes.org/e-lib/browse.cfm?elib=16150en
dc.subjectAcousticsen
dc.subjectPsychoacousticsen
dc.subjectNonlinear processingen
dc.subjectVirtual bassen
dc.subjectDigital signal processingen
dc.subjectAudio engineeringen
dc.titleWide-area psychoacoustic correction for problematic room-modes using nonlinear bass synthesisen
dc.typeArticleen
dc.contributor.departmentUniversity of Essexen
dc.identifier.journalJournal of the Audio Engineering Societyen
html.description.abstractSmall room acoustics are characterized by a limited number of dominant low-frequency room-modes that result in wide spatio-pressure variations that traditional room correction systems may find elusive to correct over a broad listening area. A psychoacoustic-based methodology is proposed whereby signal components coincident only with problematic modes are filtered and substituted by virtual bass components to forge an illusion of the suppressed frequencies. Although this approach can constitute a standalone correction system, the impetus for development is for use within well-established correction methodologies. A scalable and hierarchical approach is studied using subjective evaluation to confirm uniform wide-area performance. Bass synthesis exploits parallel nonlinear and phase vocoder generators with outputs blended as a function of transient and steady-state signal content.


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