Nexys2 audio spectrum analyzer

Requests, not necessarily related to fpga4fun...

Nexys2 audio spectrum analyzer

Postby Vali » Wed May 04, 2011 1:38 pm

Hello all,

I try to run a spectrum analyzer for Winamp using Nexys2 board and PmodAD1 from DIGILENT.
If anyone has any idea and could help me is welcome.

Thank you.
Posts: 1
Joined: Wed May 04, 2011 12:05 pm

Re: Nexys2 audio spectrum analyzer

Postby hamster » Thu May 05, 2011 5:27 am


Have a look at http://ec2-122-248-210-243.ap-southeast ... .php/SPDIF if you want to avoid that whole messy D to A stuff (at least for proof of concept).

I also have a project that plays back 16bit stereo data from the nexys2's onboard flash through dual-1bit DACs. You could use that for the initial testing / prototyping.

Also look at if S/PDIF interests you - after all your PC's motherboard might have an optical, coax or TTL audio output.

Have a look at this thread ... td-p/20659 for details on FFT IP cores and so on - the most useful being the IP core's datasheet ... 8_xfft.pdf.

I guess you are probably looking to use the VGA output of the Nexys2 to display the FFT data.... It sounds like an interesting project!

Posts: 38
Joined: Mon Sep 27, 2010 10:19 pm

Return to Help requests