Acoustic Propagation and Emulation Toolset (APET)

Currently, APET includes a modified version of the Rotorcraft Noise Model (RNM, version 7). It also includes the newly developed Spectral Attenuation Method (SAM), which contains the Ray Tracing Program (RTP) and two versions of a Green's Function Parabolic Equation (GFPE) code. The third component of APET is an audibility prediction scheme initially called ICHIN (I Can Hear It Now), and further developed by Wyle as AUDIB.