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Noise Source Identification of near-field acoustical holography and numerical simulation

Chimes of vibration characteristics of acoustic holography. Acoustics. 2000; 25 (1) :87-92 Jo Yong Ho. Acoustic inverse problem - acoustic holography field transformation technique and the source characteristics of discrimination. Progress in Physics. 1996; 16 (3 ~ 4): 6OO Yang Diange a 612. Zheng four rounds. Li more recreational. Sound source identification for the reconstruction of acoustic holography. Acustica,[link widoczny dla zalogowanych], 2001; 26 (2) :156-16O Zheng Kai. Zheng four rounds. Yang Diange and so on. Noise field acoustic holography analysis of the spatial frequency reconstruction algorithm. Tsinghua University; 2002.42 (2) :247-25OAStudyonNoiseSourcesIdentificationUsingNearFieldAcousticHolographyMethodandItsNumericalSimulationAnalysisYuFeiChenJianZhouGuanlinChellXinzhao (DynamicMeasuringCenter,[link widoczny dla zalogowanych], HefeiUniversityofTechnologyHefei, 230009) AbstractInthispapernear-fieldacousticholography (NAH) isintroducedintonoisesourcesidentificationandlocalization. Thetheoreticalanalysisandthenumericalsimulationofdifferentkindsofnoisesourcesshow: thatinthecaseofcomplexsoundsources, theycanbeidentifiedandlocalizedcorrectly, moreover,[link widoczny dla zalogowanych], theirvibrationamplitudecanberecognizedverywel1. Afterfilteringinwave-numberdomain, therandomnoisesaddedinsoundpressuremeasurementdonotaffecttheresultofsoundsourcesidentificationverymuch. Finally, thefactorscausingthereconstructingerrorsandtherulesofselectingNAHparametersarediscussedindetails, whichishelpfultoengineeringmeasurementandnoisecontro1. Keywords: noisecontrollnearfieldacousticholography; noisesourcesidentification; wavenumber first author Yu Fei Men,[link widoczny dla zalogowanych], Master. August 1980 students. Tel: (0551) 2901338-8335; E-mail: yufei6666 @ sina. com. cnII reached a new high, according to references are to papers statistics and analysis by comprehensive evaluation,[link widoczny dla zalogowanych], This is the publication last year was named
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