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Acoustics Studies of a room: transfer function, impulse response, reverberation time, frequency response, reverberation time!
Posted 12 juin 2012, 10:55 UTC−4 Interfacing, Acoustics & Vibrations, Geometry, Materials, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers Version 4.2a 0 Replies
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I am pretty new in Comsol. I am more friendly with Matlab and Catt acoustics. Nonetheless I would like to fix that weakness.
First, I am working with Comsol Multiphysics version 4.2a.
My goal is to build a room and calculate:
- its eigenmodes
- its response frequency
- its impulse response,
- its transfer function,
- and also its reverberation time of this room
with and without treatment.
Furthermore I would like to couple with a loudspeaker omnidirectional in order to compare the results.
My final goal is to implement diffuser and helmhotz resonators in 3D into the ceiling and see what's happening concerning the behavior of the sound and its propagation. How do the diffusers and resonators affect the eigendmodes of the room at certainsfrequencies, etc.
In another part I would like to figure out the masking threshold problem by different ways.
But first I know that I have to stay focused on only the transfer function, impulse response and RT of the room (indeed, step by step).
I do not know how to start.
Would you have any idea? Would you have something to suggest me?
- About the meshing?
- The impedance and the materials of the walls, floor and ceiling?
- The module? I guess it is the acoustic module!
- The type of Analysis (Frequency domain?)
- The geometry (Space dimension: 3D I guess!)
- etcetera
Feel free to contact for any suggestion or recommendation.
I am working voluntary for a teacher at Chalmers University (in Gothenburg) on this topic. For me knowledges and experiences image the value of this job.
Thank you very much in advance.
I am looking forward to hearing you soon.
Best regards,
Thibaud LEPORTOIS
Hello Thibaud Leportois
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