FFT and Spectrograms

2003-10-02 00:17:36

Can anyone suggest a direction for me to learn the process of using FFT to create 3D spectrograms...?

I will be using raw sample data decoded from PCM WAV files.

From what I know so far, I am thinking that I would need to use FFT to transpose the signal from the time domain to the frequency domain at various frequency intervals. Then that would give me, in a manner of thinking, the "purpendicular slices" that I would have to plot into the Z-axis of the array, and which would represent the amplitude of the signal at each center frequency over time.

Does this make sense?

Anyone got any suggestions and/or web pages for me to learn this kind of thing?

Thanks!

FFT and Spectrograms

Reply #1 – 2003-10-03 11:02:41

Someone here already posted a link to a webpage about FFT, but all I can find is this one http://www.hydrogenaudio.org/forums/index.php?showtopic=9835

FFT and Spectrograms

Reply #2 – 2003-10-03 20:52:09

Thanks!