This was 2006... on a dumb phone. It wasn’t ideal, but it worked quite well. | Hacker News

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		MobileVet on Dec 26, 2019 \| parent \| context \| favorite \| on: Single Tone Detection with the Goertzel Algorithm ... This was 2006... on a dumb phone. It wasn’t ideal, but it worked quite well.

sevagh on Dec 26, 2019 [–]

So did you indeed loop over every possible frequency?

I know I attempted a Goertzel-based pitch detector once, where I looped over frequencies and picked the one with the largest magnitude. I picked 25Hz and 4200Hz as my limits (from a piano).

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