Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/52067
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dc.contributor.authorDumuid, P.en
dc.contributor.authorCazzolato, B.en
dc.contributor.authorZander, A.en
dc.date.issued2008en
dc.identifier.citationJournal of the Acoustical Society of America, 2008; 123(1):174-185en
dc.identifier.issn0001-4966en
dc.identifier.issn1520-8524en
dc.identifier.urihttp://hdl.handle.net/2440/52067-
dc.description.abstractThe application of inverse filter designs as a means of providing improved communication performance in acoustic environments is investigated. Tikhonov regularized inverse filters of channel transfer functions calculated in the frequency domain are used as a means of obtaining multi-channel filters. Three classifications of inverse filter structures have been considered using time-domain simulations. The performance of Tikhonov regularized inverse filters designed according to each of these classifications is compared with each other and against a filter design developed by Stojanovic [Stojanovic, M. (2005). "Retrofocusing techniques for high rate acoustic communications," J. Acoust. Soc. Am. 117, 1173-1185]. It is shown that the filter design developed by Stojanovic requires less regularization and outperforms the Tikhonov regularized inverse filter designs when communicating over a single channel. While the filter developed by Stojanovic is designed to use multiple transmitters to transmit to a single receiver, the filter was implemented in a multi-channel system and proposed to have a focusing similar to that obtained using time-reversal. It was found that for the scenario used in the simulation, the Tikhonov regularized inverse design for full multi-channel inversion achieved better focusing than the design by Stojanovic, where simulation results show 20 dB less cross-talk at the expense of around 2 dB loss in signal strength.en
dc.description.statementofresponsibilityPierre M. Dumuid, Ben S. Cazzolato, and Anthony C. Zanderen
dc.language.isoenen
dc.publisherAcoustical Soc Amer Amer Inst Physicsen
dc.subjectacoustic filters; acoustic signal processingen
dc.titleA comparison of filter design structures for multi-channel acoustic communication systemsen
dc.typeJournal articleen
dc.identifier.rmid0020080059en
dc.identifier.doi10.1121/1.2804940en
dc.identifier.pubid43920-
pubs.library.collectionMechanical Engineering publicationsen
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidCazzolato, B. [0000-0003-2308-799X]en
dc.identifier.orcidZander, A. [0000-0003-4099-8146]en
Appears in Collections:Mechanical Engineering publications
Environment Institute publications

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