A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparative study of different approaches for active control of sound transmission through double walls
Active noise control technology has recently been used to increase the sound transmission loss of double wall structures. Several approaches have been proposed and explored. In this study, three approaches for controlling sound transmission through double panel partitions into a room, ie, applying acoustic control sources in the air gap between the two panels (cavity control), applying vibration control sources on the radiating panel (panel control), and applying acoustic control sources in the receiving room (room control), are investigated and compared to each other experimentally. The mechanisms involved in each approach are illustrated and the conditions for effective noise attenuation are examined. It is shown that the modal overlap of each sub-system (the cavity, the radiating panel and the room) and the control mechanisms involved are the two most important factors that determine the effectiveness of each approach.
Comparative study of different approaches for active control of sound transmission through double walls
Active noise control technology has recently been used to increase the sound transmission loss of double wall structures. Several approaches have been proposed and explored. In this study, three approaches for controlling sound transmission through double panel partitions into a room, ie, applying acoustic control sources in the air gap between the two panels (cavity control), applying vibration control sources on the radiating panel (panel control), and applying acoustic control sources in the receiving room (room control), are investigated and compared to each other experimentally. The mechanisms involved in each approach are illustrated and the conditions for effective noise attenuation are examined. It is shown that the modal overlap of each sub-system (the cavity, the radiating panel and the room) and the control mechanisms involved are the two most important factors that determine the effectiveness of each approach.
Comparative study of different approaches for active control of sound transmission through double walls
Bao, Chao-Ying (author)
Noise & Vibration Worldwide ; 29 ; 11-17
1998
7 Seiten, 9 Quellen
Article (Journal)
English
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