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- W2555962044 abstract "Double glazed structures are widely used in noise control applications when good sound insulation characteristics have to be achieved. However, the acoustic performance of those double glazed structures deteriorates rapidly at low frequencies around the mass-air-mass resonance (double structures resonance), where it can be even became worse than that of a single plate. In this study, an analytical and experimental investigation of sound transmission characteristics of the double glazed window is presented. The sound power of the double glazed structure is calculated base on radiation mode approach. It is found that, around the mass-air-mass resonance, the first radiation mode (volume velocity) accounts for the majority of sound power. Then experimental modal analysis has been performed. The Least square complex exponential algorithm is used to extract the modal parameters, i.e. mode shapes, natural frequencies and modal damping ratio of the structure. Final, the sound transmission loss characteristics were performed by placing the double glazed window between two reverberation rooms. These results should be useful for updating mathematical models of glazed window for calculation and prediction of sound transmission loss in a low frequency ranges." @default.
- W2555962044 created "2016-11-30" @default.
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- W2555962044 date "2014-01-01" @default.
- W2555962044 modified "2023-09-27" @default.
- W2555962044 title "EXPERIMENTAL INVESTIGATION OF SOUND TRANS- MISSION AND VIBRATION CHARACTERISTICS OF A DOUBLE GLAZED STRUCTURE" @default.
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