On 11-Mar-10 13:44, Peter Restall wrote:
>
> Although to be honest, with a dsPIC at your disposal I'd just stick to using
> Goertzel.
>
> Hope this helps.
> Regards,
> Pete Restall
>    


     A tutorial about Goertzel:

     http://www.embedded.com/story/OEG20020819S0057

     I have used it for DTMF decoding on an ATmega48 uP.

     Mark Jordan

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