Bispectral analysis of nonlinear acoustic propagation

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dc.contributor.advisorHamilton, Mark F.en
dc.contributor.committeeMemberWochner, Mark S.en
dc.creatorGagnon, David Edwarden
dc.date.accessioned2011-07-11T20:00:24Zen
dc.date.accessioned2017-05-11T22:22:38Z
dc.date.available2011-07-11T20:00:24Zen
dc.date.available2017-05-11T22:22:38Z
dc.date.issued2011-05en
dc.date.submittedMay 2011en
dc.date.updated2011-07-11T20:00:53Zen
dc.descriptiontexten
dc.description.abstractHigher-order spectral analysis of acoustical waveforms can provide phase information that is not retained in calculations of power spectral density. In the propagation of high intensity sound, nonlinearity can cause substantial changes in the waveform as frequency components interact with one another. The bispectrum, which is one order higher than power spectral density, may provide a useful measure of nonlinearity in propagation by highlighting spectral regions of interaction. This thesis provides a review of the bispectrum, places it in the context of nonlinear acoustic propagation, and presents spectra calculated as a function of distance for numerically propagated acoustic waveforms. The calculated spectra include power spectral density, quad-spectral density, bispectrum, spatial derivative of the bispectrum, bicoherence, and skewness function.en
dc.description.departmentElectrical and Computer Engineeringen
dc.format.mimetypeapplication/pdfen
dc.identifier.slug2152/ETD-UT-2011-05-3177en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-05-3177en
dc.language.isoengen
dc.subjectNonlinear acousticsen
dc.subjectPower spectral densityen
dc.subjectQuad-spectral densityen
dc.subjectBispectrumen
dc.subjectBicoherenceen
dc.subjectSkewness functionen
dc.subjectPropagationen
dc.subjectWaveformen
dc.subjectNoiseen
dc.subjectHigher order spectral analysisen
dc.subjectElectrical engineeringen
dc.titleBispectral analysis of nonlinear acoustic propagationen
dc.type.genrethesisen

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