I have been testing 2 seperate programs to decode voice inversion being used by a local towing company. I find the Invert program sounds far better than the Voice Descrambler program by IZ8BLY. I found you have to right click Invert and set the compatibility to Win95 (Im using XP), once I did that the program became more stable and the high pitched whine went away. Anybody else have tips or other software to decode voice Inversion?