piclist 2000\05\26\123823a >
Thread: DTMF decoding with a PIC (sigma-delta)
face BY : Dan Mulally email (remove spam text)

----- Original Message -----
From: "Peter L. Peres" <plpRemoveMEspamspam_OUTACTCOM.CO.IL>
To: <EraseMEPICLISTspamBeGonespamTakeThisOuTMITVMA.MIT.EDU>
Sent: Wednesday, May 24, 2000 12:42 PM
Subject: Re: DTMF decoding with a PIC (sigma-delta)

{Quote hidden}

DTMF tones were intentionally selected to minimize interference due to
harmonics and intermod products so you may be fine. There is a method to
generate single tones from digital functions using Walsh functions. I'm not
sure how easy it is to use for multiple tones.


<00a301bfc730$68563120$930b22d0@computer> 7bit

See also: www.piclist.com/techref/pots/dtmf.htm?key=dtmf
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Subject (change) DTMF decoding with a PIC (sigma-delta)

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