Transmission loss optimization of multi-layer noise control treatments

  • Sebastian Ghinet Department of Mechanical Engineering, Université de Sherbrooke, Boul. Université, Sherbrooke, Que. J1K 2R1, Canada
  • Noureddine Atalla Department of Mechanical Engineering, Université de Sherbrooke, Boul. Université, Sherbrooke, Que. J1K 2R1, Canada
Keywords: Acoustic noise, Acoustic wave absorption, Acoustic wave transmission, Computer simulation, Elasticity, Noise abatement, Optimization, Porosity, Sound insulating materials, Tortuosity, Transmission loss

Abstract

The optimization of the diffuse field transmission loss through double-wall sound barriers is discussed. The sound barriers are made from a porous decoupling material sandwiched between an elastic skin and a septum. The study aims at optimizing the frequency band averaged diffuse field transmission loss of the three layer system. The optimization problem is implemented by combining the optimization engine to an acoustic-indicator engine for the transmission loss calculation. The aim is to tailor certain material properties of the porous layer to achieve the minimum noise condition.
Published
2000-09-01
How to Cite
1.
Ghinet S, Atalla N. Transmission loss optimization of multi-layer noise control treatments. Canadian Acoustics [Internet]. 2000Sep.1 [cited 2019Sep.19];28(3):96-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1307
Section
Proceedings of the Acoustics Week in Canada

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