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Distinguish between the sound of the air mass

struetur ~ borneNoiseinaG0hera1AviationAircFaft, NASACR a 159,[link widoczny dla zalogowanych],099 . Aug. , 1979:2] Lois, A ... RMcgary, M. C. : StudiesofTransmissioninAdvancedCornpositeMateria1Structures,[link widoczny dla zalogowanych], ACEECompositeStructureConference, 1984 [3] Beranek, LLNoiseandVibrationContro1. McGraw-Hill, Inc. [4] Fahy, F ... JSoundandStructuralibration, AcademicPresslnc. [53GadeSSoandIntensity (Theory) andSoundIntensity (InstrumentatlonandApp1icati0ns), accounting & KTechnicalReviews, No. 3andNo. 4,1982 [8] Bockboff,[link widoczny dla zalogowanych], M. : SomeRemarksontheContinuousSweepingMethodinSoundPowerDetermlnation, ProceedingsofINTER-NoIsE, 1984StudyonSeparatingAirborneandStructureborneNoisesHuZhangweiYinJianping (NanjingAeronauticalInstitute) bstractItisimportanttoknowthepredomlnantsourc0COntributedtothecabinnoiseinredutingthenoisein. theaircraft, 5othatthereasonableandeffectienoisecontroltreatmentcanbeused. Thenoiseenteringthecabincftheaircraftismain1Ydividedintotwomajorcategoties,[link widoczny dla zalogowanych], viz, airborneexcitingnoiseandmechanicexcitingnoise. Thefofreeriscalledairhornenoiseforthecoatrihutiontothecabinnseandthelatterstructnrebornenoise. Theformulaeforseparatingthemafederivedusingtwomicropboneaconsticintensitymethodinthetwotypesofexcitati0nintermsofthedifferenceintheairborneandstTucturebofnenoiseradlationefficienciesfortheaircraftfuselage. Theexperimentsseparatingtheairbornenoiseandstruetu-rebornenoiseareperformedusingtbeseformulaeonauniformplateandari'bbedplateseparately. Theagreementbeteenthepredictedandtheexperimenta1resuhsisfairlygood. keywordsIairbornenoise, structurebornenoise, cabinnoise, separating. soundintensitymethod

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