Sound fields in a rectangular enclosure under active sound transmission control

2001 ◽  
Vol 110 (2) ◽  
pp. 925-938 ◽  
Author(s):  
S. K. Lau ◽  
S. K. Tang
Keyword(s):  
Sound Transmission ◽  
Transmission Control ◽  
Sound Fields ◽  
Rectangular Enclosure

The Sound Transmission Through a Baffled, Thin, Finite, Elastic Plate by Using Boundary Integral Equations

1999 ◽  
Author(s):  
Yasuhito Kawai
Keyword(s):  
Integral Equations ◽  
Elastic Plate ◽  
Boundary Integral Equations ◽  
Sound Transmission ◽  
Coupled System ◽  
Boundary Integral ◽  
Image Method ◽  
Thin Elastic Plate ◽  
Control Engineering ◽  
Sound Fields

Abstract The prediction of sound transmission through a thin elastic plate such as a window is an important problem in the field of noise control engineering. Integral equations which express sound fields in infinite half spaces which are divided off by the baffle and the elastic plate are introduced and combined with the equation of plate vibration to solve as a coupled system. The image method is used in every equation to reduce unknown functions and boundaries which should be considered. Some numerical examples are solved numerically to examine the method.

701 Acoustic enclosure with active sound transmission control

2010 ◽  
Vol 2010 (0) ◽  
pp. _701-1_-_701-5_
Author(s):  
Akira SANADA ◽  
Kouji HIGASHIYAMA ◽  
Nobuo TANAKA
Keyword(s):  
Sound Transmission ◽  
Transmission Control

Smart Double Panel with Decentralized Active Dampers for Sound Transmission Control

AIAA Journal ◽  
2008 ◽  
Vol 46 (6) ◽  
pp. 1463-1475 ◽  
Author(s):  
Neven Alujevíc ◽  
Paolo Gardonio ◽  
Kenneth D. Frampton
Keyword(s):  
Sound Transmission ◽  
Transmission Control

Noise Transmission Control Studies on a Chamber Core Composite Cylinder

2002 ◽  
Author(s):  
Deyu Li ◽  
Jeffrey S. Vipperman
Keyword(s):  
Critical Frequency ◽  
Passive Control ◽  
Sound Transmission ◽  
Cavity Resonance ◽  
Beam Model ◽  
Structural Stiffness ◽  
Composite Cylinder ◽  
Transmission Control ◽  
Box Beam ◽  
Acoustic Control

The vibroacoustic behavior and sound transmission properties of a mock-scale chamber core composite cylinder were studied, and the feasibility of the active structural acoustic control and passive control was also investigated. A box-beam model of the chamber core cylindrical shell was used for calculating the critical frequency and the ring frequency. The coupling problems between structural and acoustic modes were investigated, and the structural and acoustic modal parameters were identified from measured data. The sound transmission into the chamber core cylindrical structure was measured with and without fill materials in its wall chambers. The structural stiffness-, cavity resonance-, coincidence-, and mass-controlled zones were identified and verified.

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