I am going to show my ignorance here, but I am looking for software that
analyzes and displays the frequencies present in a sound wave. I have
seen
this with Vernier Software's universal lab interface and it's sound
analysis program. A nice bar graph of frequencies was given . I
believe the menu choice was "FFT", and I _think_ it stood for "Fast
Fortrier(???) Transformation".
I have several good oscilloscope programs for my Mac that I downloaded
off the Internet, but I would like to also be able to see a display of
the principle frequencies present.