Sound attenuation pattern in a rectangular enclosure under potential-energy based active sound transmission control

S. K. Lau, Shiu Keung Tang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

The performance of the acoustic control system depends on the locations of control sources and error sensors. Under squared pressure control, maximized global and local performance of active noise control inside enclosure can be achieved by locating the error sensors at the peak quiet zone under potential energy control. Therefore, sound pressure attenuation pattern is critical for selection of error sensor locations in active control of sound inside an enclosure. For active control of sound transmission through a flexible structure, the effects of different edge rotational and translational flexibility of the flexible structure on the active sound transmission control have not been studied in detail. In present study, visualization of the sound pressure attenuation pattern under potential energy control shows the peak quiet zone located close to the flexible panel at low frequency and between the node lines at high frequency. The optimal location of error sensor close to a corner of the enclosure and the flexible structure is confirmed. The effects of rotational and translational flexibility of the edges of the flexible structure which form the transmission wall of the structure-acoustic system are discussed. Full coupling between the flexible structure and the enclosure is considered.
Original languageEnglish
Title of host publicationInstitute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
Pages2453-2462
Number of pages10
Volume4
Publication statusPublished - 1 Dec 2006
Event35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 - Honolulu, HI, United States
Duration: 3 Dec 20066 Dec 2006

Conference

Conference35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
CountryUnited States
CityHonolulu, HI
Period3/12/066/12/06

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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