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  1. MehdiZerrad

    Speaker perforations

    Hello everybody, Is there someone who has a physical explanation about the impact of the perforations in the speakers plate, on the sound pression field ?? What is te correlation between the density of perforations and wave lenght ? Thank you
  2. MehdiZerrad

    Acoustic absorption of composite, polymer materials (in engine compartment)

    Hello everybody, I'm working on the caracterisation of the acoustic absorption of polymer and composite pipes (around the engine compartment for exemple) and i'm looking for literature treating that kind of questions. I hope you can help me. Thank you

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