Sound transmission through double partitions with cavity absorption |
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| Affiliation: | 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China;2. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China;1. KU Leuven, Faculty of Engineering Science, Department of Civil Engineering, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium;2. KU Leuven, Faculty of Engineering Science, Department of Architecture, Kasteelpark Arenberg 1, B-3001 Leuven, Belgium;1. Silesian University of Technology, Department of Measurements and Control Systems, Akademicka 16, 44-100 Gliwice, Poland;2. State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. Department of Mechanical Engineering, Politecnico di Milano, Milano 20156, Italy |
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| Abstract: | The sound transmission through double partitions with cavity absorption is discussed. A simple model is considered, consisting of two parallel thin elastic plates containing sound-absorbing material in the cavity between them. An expression for the transmission loss is obtained and calculations carried out for representative examples are compared with existing experimental values. The agreement in all cases is good. |
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