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One New Method for Calculating Reverberation Time in Car Compartment

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In this paper, based on acoustical finite element method (FEM) model, one new method for calculating reverberation time in car compartment is presented. The new method differs from Sabine's equation in that diffuse sound field isn't absolutely necessarily condition. As a result, the new method could give correct reverberation time for being designed car compartment with any shape and boundary condition. Firstly, Paper describes FEM of car compartment. Secondly, the new method is presented in detail, and computer program of it is written. Lastly, in one model of car compartment, reverberation time is calculated with the new method, and compared with that given by experiment, the results show that the method is effective and feasible.

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