Goertzel

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cartere

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Paul


There seems to be this random rumor on the web that you have Goertzel code for the teensy, any truth to it?
 
Years ago, I did write a 7 band Goertzel DTMF decoder for a different AVR chip. It worked quite well. The Goertzel algorithm was coded in hand optimized assembly and used under 15% of the CPU time for all 7 bands.

That old code was never released. It's collecting dust somewhere.
 
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