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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/67880


    Title: The effect of multiple branches on sound propagation in long enclosures
    Authors: Liu, Jacob Chia-Chun;Lu, Po-Chien
    Contributors: 淡江大學水資源及環境工程學系
    Keywords: Sound propagation;Long enclosures;Multiple vertical/inclined branches;Early decay time;Reverberation time
    Date: 2009-06
    Issue Date: 2011-10-23 02:10:28 (UTC+8)
    Publisher: Kidlington: Pergamon
    Abstract: Since the classical room acoustics can not be used for long enclosures due to the inhomogeneous sound field, much work has been carried out recently to investigate the sound propagation in long enclosures, which are helpful to the acoustic design of practical long enclosures, such as the high-speed railway tunnels. However, most of these works focuses on the straight long enclosures without branches or with one branch. In this paper, the effects of the multiple branches on sound propagation of long enclosures are studied. The sound pressure level (SPL) attenuation, early decay time (EDT), and reverberation time (T30) of long enclosures with multiple branches have been investigated by physical scale models based acoustic experiments. Several interesting results have been obtained concerning the sound propagation of long enclosures with multiple branches. It shows that the sound field of long enclosures with multiple branches is more complex and inhomogeneous than that of the long enclosures without branches or with one branch.
    Relation: Applied Acoustics 70(6), pp.894–901
    DOI: 10.1016/j.apacoust.2008.10.008
    Appears in Collections:[水資源及環境工程學系暨研究所] 期刊論文

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