[linux-audio-dev] 3D fft analysis program

[Downer]

>   I'm hoping that you're thinking of a realtime display, in which the
> peaks roll off to create a true waterfall effect.

Baudline (http://www.baudline.com) is a fantastic viewer that does fft 
cascade. I've used it for a couple of years, and it is great for figuring out 
how different sounds "work", and it has an oscilloscope-type display as well.

Cheers,

Jason Downer