spectrum analyzer/equalizer

Hello,
I am searching for good references on programming
a spectrum analyzer/equalizer like those seen on
most music players. I read about the fast fourier
transform, however the complete task seems full
of details that I ignore. I tried to look inside opensource
players (xmms), but perhaps a good overview of
all is better to begin with.
Thanks,
                      wily

"dr.oktopus" <blindwilly@freeonline.zzn.com> wrote in message 
news:3414de21-d79b-482f-9019-b974b9cdd50a@v7g2000yqh.googlegroups.com...
> I am searching for good references on programming
> a spectrum analyzer/equalizer like those seen on
> most music players. I read about the fast fourier
> transform, however the complete task seems full
> of details that I ignore. I tried to look inside opensource
> players (xmms), but perhaps a good overview of
> all is better to begin with.

http://www.maths.abdn.ac.uk/~bensondj/html/music.pdf

If you wish to program a mathematical subject, then you
will need some understanding of what is going on.

Thanks, I didn't know its existence. I was looking also for code
(c language), that could serve as a didactic example.