Active control of sound transmission through a double wall partition into an acoustic cavity

Y. Y. Li, Li Cheng

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

Abstract

Active control of sound transmission through a mechanically-linked double-wall structure into an acoustic cavity is investigated in this paper. Based on a fully coupled vibro-acoustic model, two different control strategies are studied: a), cavity control using acoustic sources inside the air gap and b). structural control using structural actuators between the two panels. The relationship between the transmission path (acoustic or structural) and the selection of control strategies is explored. For each case, the dominant control mechanism at different frequency ranges is examined. It is found that modal suppression is dominant at low frequencies while modal reconstructing at high frequencies. In addition, the effect of the acoustic mode (0,0,0) on active control of energy transmission is also discussed, giving guidance to choose the appropriate control arrangement to ensure a maximum control performance.
Original languageEnglish
Title of host publication12th International Congress on Sound and Vibration 2005, ICSV 2005
Pages4740-4747
Number of pages8
Volume6
Publication statusPublished - 1 Dec 2005
Event12th International Congress on Sound and Vibration 2005, ICSV 2005 - Lisbon, Portugal
Duration: 11 Jul 200514 Jul 2005

Conference

Conference12th International Congress on Sound and Vibration 2005, ICSV 2005
Country/TerritoryPortugal
CityLisbon
Period11/07/0514/07/05

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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