METHOD OF PREDICTING ACOUSTIC FIELDS BASED ON GENERALIZED MOVING FRAME ACOUSTIC HOLOGRAPHY AND SYSTEM THEREOF

摘要

The present invention relates to field prediction methods and acoustics forecasting system, if the relative motion of especially sound source, moderate, measurement surface and system based on prediction method are used to accurately predict sound field prediction on any surface. ;Method field prediction method is used for measurement and sound source or a sound wave in relative motion on measurement surface according to an aspect of the present invention, by issuing from the medium in medium source, for predicting field on the surface that it is related to. Particularly, first frequency spectrum (wave-number spectrum) is obtained on the measurement surface according to moving coordinate system; Through relative speed between measurement surface and medium, second frequency spectrum is converted to the reference frame of first frequency spectrum; Second frequency spectrum is converted into the frequency spectrum on the third surface of the prediction by sound wave transfer theory; Relative speed is used between medium and prediction curved surface, third frequency spectrum is converted to the 4th frequency spectrum of moveable coordinate system; By the step for calculating prediction field on the 4th frequency spectrum surface.