Publication:
Improved precision in measurements of acoustic impedance spectra using resonance-free calibration loads and controlled error distribution

dc.contributor.author Dickens, Paul en_US
dc.contributor.author Smith, John en_US
dc.contributor.author Wolfe, Joseph en_US
dc.date.accessioned 2021-11-25T13:08:22Z
dc.date.available 2021-11-25T13:08:22Z
dc.date.issued 2007 en_US
dc.description.abstract Resonances and/or singularities during measurement and calibration often limit the precision of acoustic impedance spectra. This paper reviews and compares several established techniques, and describes a technique that incorporates three features that considerably improve precision. The first feature is to minimize problems due to resonances by calibrating the instrument using up to three different acoustic reference impedances that do not themselves exhibit resonances. The second involves using multiple pressure transducers to reduce the effects of measurement singularities. The third involves iteratively tailoring the spectrum of the stimulus signal to control the distribution of errors across the particular measured impedance spectrum. Examples are given of the performance of the technique on simple cylindrical waveguides. en_US
dc.identifier.issn 0001-4966 en_US
dc.identifier.uri http://hdl.handle.net/1959.4/39243
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/au/ en_US
dc.source Legacy MARC en_US
dc.subject.other Acoustic impedance measurement en_US
dc.subject.other Acoustic transducers en_US
dc.subject.other Calibration en_US
dc.subject.other Circular waveguides en_US
dc.subject.other Error analysis en_US
dc.subject.other Resonance en_US
dc.subject.other Spectrum analysis en_US
dc.title Improved precision in measurements of acoustic impedance spectra using resonance-free calibration loads and controlled error distribution en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.accessRights.uri http://purl.org/coar/access_right/c_14cb
unsw.description.notePublic Author webpage: http://www.phys.unsw.edu.au/~jw/pubs.html en_US
unsw.identifier.doiPublisher http://dx.doi.org/10.1121/1.2434764 en_US
unsw.relation.faculty Science
unsw.relation.ispartofissue 3 en_US
unsw.relation.ispartofjournal Journal of the Acoustical Society of America en_US
unsw.relation.ispartofpagefrompageto 1471-1481 en_US
unsw.relation.ispartofvolume 121 en_US
unsw.relation.originalPublicationAffiliation Dickens, Paul, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Smith, John, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Wolfe, Joseph, Physics, Faculty of Science, UNSW en_US
unsw.relation.school School of Physics *
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