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Sound transmission between infinite rooms; a modal approach and fe-formulation

På svenska

Author

  • Jonas Brunskog
  • Peter Davidsson

Summary, in English

A full description of the entire system room-wall-room in a theoretical model for sound insulation is still today too computation intensive, implying that the higher frequencies cannot be studied. Some simplifications must thus be introduced. The simplification proposed in the present paper is to replace the rooms with wave-guides, i.e. infinity long rooms. The model then reduces to the (more or less) two-dimensional wall. The question of how to apply the excitation then arises. The choice herein is to use a combination of diffuse field and Monte Carlo simulations. The incident and radiated power, expressed in the wave-guide modes, is used to calculate the transmission loss. A minor literature survey is also included.

Publishing year

2003

Language

English

Pages

4541-4548

Publication/Series

Proceedings of the 10th International Congress on Sound and Vibration

Document type

Conference paper

Publisher

Institute of Acoustics

Topic

  • Mechanical Engineering
  • Fluid Mechanics and Acoustics

Keywords

  • Plasterboards
  • Transmission loss (TL)
  • Sound transmission

Conference name

Proceedings of the Tenth International Congress on Sound and Vibration

Conference date

2003-07-07 - 2003-07-10

Conference place

Stockholm, Sweden

Status

Published