Here is a link of snippet in VB:
http://www.picbasic.co.uk/forum/showthread.php?t=1366&p=6731#post6731
And here is Roman Blacks DTMF decoder that is not using fourier but a rather smart...
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Here is a link of snippet in VB:
http://www.picbasic.co.uk/forum/showthread.php?t=1366&p=6731#post6731
And here is Roman Blacks DTMF decoder that is not using fourier but a rather smart...