April 27, 2021 at 12:55 pm

mcoderon

Ansys Employee

Hello, nWhen you process the acoustic signal on surfaces you can analyze a set of modes or frequency bands. n-In the first case you will get the real and the imaginary parts of the complex Fourier amplitudes. n-In the second case you can extract quantities to plot: the surface pressure level fields that are in decibels; the dimensional power spectral density of the pressure time derivative, in units of pressure squared over time squared. nYou can refer to the following sections of the user's guide for more information: n23.2.6. FFT of Acoustic Sources: Band Analysis and Export of Surface Pressure Spectran47.16.5. Acoustic Sources FFT Dialog BoxnnHope this helpsn