Actually, all I've tried so far is to create a pointer to a single 3D array, and that won't work.<BR><BR>I don't have the code available to me now, which I know is dumb for asking this kind of ...

For example, my thought process on the whole thing was 1/4 wavelength spacing simplifies the phased array calculations, what is 1/4 wavelength at 40KHz, and the answer is, of course, it depends ...