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dc.contributor.authorPennington, Kyle
dc.contributor.authorScott, Jonathan B.
dc.contributor.authorBodman, Kerry
dc.coverage.spatialConference held at Palmerston North, New Zealanden_NZ
dc.date.accessioned2013-03-04T20:51:34Z
dc.date.available2013-03-04T20:51:34Z
dc.date.issued2011
dc.identifier.citationPennington, K., Scott, J.B. & Bodman, K. (2011). Determining acoustical directionality in an impedance tube using multiple fixed microphones. In Proceedings of the 18th Electronics New Zealand Conference, ENZCON 2011, Massey University, Palmerton North, 21-22 November 2011, pp. 73-76.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/7307
dc.description.abstractAcoustic impedance of a port or object is a valuable piece of knowledge describing how well sound is transmitted or reflected. The commonly used slotted-line method is labourious and time consuming, requiring manual movement to find the maxima and minima at each frequency. This paper outlines a technique to computationally determine the magnitude and phase of the constituent travelling waves from the standing plane sound wave measurements in an impedance tube. Measured magnitude and phase data from multiple fixed microphones carefully spaced along the length of the impedance tube is numerically fitted to incident and reflected wave models, which can then be used to calculate the complex acoustic impedance at each frequency of interest.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherSchool of Engineering and Advanced Technology, Massey University.en_NZ
dc.relation.urihttp://enzcon.org.nz/ENZCon2011/ENZCon2011.htmlen_NZ
dc.rights© 2011 The Authors.en_NZ
dc.titleDetermining acoustical directionality in an impedance tube using multiple fixed microphonesen_NZ
dc.typeConference Contributionen_NZ
dc.relation.isPartOfProceedings of the 18th Electronics New Zealand Conferenceen_NZ
pubs.begin-page73en_NZ
pubs.elements-id21380
pubs.end-page76en_NZ
pubs.finish-date2011-11-22en_NZ
pubs.start-date2011-11-21en_NZ


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