isize -- This is the size of the FFT to be performed. The larger the size the better the frequency response but a sloppy time response.
ioverlap -- This is the overlap factor of the FFT's, must be a power of two. The best settings are 2 and 4. A big overlap takes a long time to compile.
iwin -- This is the ftable that contains the window to be used in the analysis.
ain1 -- The stimulus sound. Must have high frequencies for best results.
ain2 -- The modulating sound. Must have a moving frequency response (like speech) for best results.
kbias -- The amount of cross synthesis. 1 is the normal, 0 is no cross synthesis.
If ftable one is a speech sound, this will result in speaking white noise.
ftable 2 must be a window function (GEN20).