Patent ID: 8371172

Claim:
A system for predicting acoustic fields on a prediction plane by measuring sound waves emitted from a sound source to a medium on a measurement plane that makes a relative movement with respect to the sound source, the system comprising: a microphone array having a plurality of microphones, for measuring sound waves on the measurement plane; and an acoustic field prediction module for predicting acoustic fields on the prediction plane using the measurements received from the microphone array, wherein the acoustic field prediction module acquires a first wavenumber spectrum on the measurement plane according to a moving coordinate system, converts the first wavenumber spectrum to a second wavenumber spectrum on a reference coordinate system using a relative velocity between the measurement plane and the medium, converts the second wavenumber spectrum to a third wavenumber spectrum on the prediction plane using an acoustic wave propagation theory, converts the third wavenumber spectrum to a fourth wavenumber spectrum on a moving coordinate system using a relative velocity between the medium and the prediction plane, and computes acoustic fields on the prediction plane using the fourth wavenumber spectrum.