Hi, I'm trying to build a spectrum analyzer for a multi-band parametric equalizer in Pure Data but can't find any information on how to make one anywhere. I was wondering if anyone could explain how to make a spectrum analyzer or direct me to a link with the relevant information.

Thanks!

wikipedia often helps:

http://en.wikipedia.org/wiki/Spectrum_analyzer

Well , I can't explain and never tried something like this.
There is an example in the Help Browser/examples/adaptive/03.undermodeling.pd
and I think searching in the Browser will give you information.

About the theory you may look "The Theory and Technique of Electronic Music" (get it if you haven't allready - it's free in M.Puckette's page I think) for chapters 8 and 9.

Check this post.

http://puredata.hurleur.com/sujet-2508-frequency-analyzer

Done and got it working!

Thanks for the help guys!