Archives of Acoustics, 46, 1, pp. 183–194, 2021

Study on Sound Transmission across a Floating Floor in a Residential Building by Using SEA

Xianfeng HUANG
Guangxi University

Yimin LU
Guangxi University

Chen QU
Guangxi University

Chenhui ZHU
Guangxi University

For the purpose of reducing the impact noise transmission across floating floors in residential buildings, two main sound transmission paths in the floating floor structure are considered: the stud path and the cavity path. The sound transmission of each path is analysed separately: the sound transmission through the cavity and the stud are predicted by statistical energy analysis (SEA). Then, the sound insulation prediction model of the floating floor is established. There is reasonable agreement between the theoretical prediction and measurement, and the results show that a resilient layer with low stiffness can attenuate the sound bridge effect, resulting in higher impact noise insulation. Then, the influences of the floor covering, the resilient layer and the floor plate on the impact sound insulation are investigated to achieve the optimised structure of the floating floor based on the sound insulation.
Keywords: sound transmission; floating floor; impact noise; sound insulation
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DOI: 10.24425/aoa.2021.136572