I did not realise that something like this could be so complicated and it would possibly be easier to implement using analogue electronics but that would not be as much fun to play with Unless anybody knows of an easier to understand explanation of FFT's. Cheers.... ----- Original Message ----- From: "Joe Farr" To: Sent: Wednesday, May 15, 2002 7:45 AM Subject: Re: [PIC]: Spectrum analyser 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 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body