Academy of Performing Arts in Prague
A multiple-microphone method employed for in-duct acoustics applications is adapted for a flue organ pipe geometry. In order to make the measurement non-destructive the microphones are replaced by a pressure probe synchronized with a reference signal. Limits of the method regarding the pipe geometry are verified by the numerical calculations employing the linearized Euler equations. Results based on the lossless model, the visco-thermal lossess and models regarding the convection and turbulence are compared and discussed. A framework for the reflection coefficient calculation is designed and tested.
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