Everyday Practical Electronics mag did a PIC based spectrum analyser
that outputs the results to a PC in their Feburary 2002 edition.
If you look on their web site www.epemag.co.uk you should find a pointer
to their ftp area where you can download the software which might give
you some ideas.
It was based on a PIC 16F877,a 32Kb SRAM and an external AtoD converter.
The supporting article talks a lot about FFT's





-----Original Message-----
From: Thomas C. Sefranek [mailto:tcs@CMCORP.COM]
Sent: 14 May 2002 23:36
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: Spectrum analyser


Brouse for FFTs.

Jamie Donald wrote:

> Does anybody know how to implement an audio spectrum analyser, say for
instance a 7 band bar graph display.
> I'm not too sure on the process of taking an ac signal and taking an
average level at several frequencies, is it possible?
>
> Thanks in advance
> Jamie..
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.

--
  *
  |  __O    Thomas C. Sefranek   tcs@cmcorp.com
  |_-\<,_   Amateur Radio Operator: WA1RHP
  (*)/ (*)  Bicycle mobile on 145.41, 448.625 MHz

http://hamradio.cmcorp.com/inventory/Inventory.html
http://www.harvardrepeater.org

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body