Optimised sound absorbing panels with quarter-wave resonators
نویسندگان
چکیده
The viscothermal wave propagation of the air inside the resonators is efficiently described by the so-called low reduced frequency model. Using this model, absorption coefficients can be calculated for different configurations. The theory has been implemented together with an optimisation algorithm, so that the dimensions of the resonators can be optimised to satisfy any desired absorption level within a specified frequency range. Experimental validation of the optimised configurations is performed by means of impedance tube measurements.
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