[Noisebridge-discuss] Door system.

Martin Bogomolni martinbogo at gmail.com
Wed Sep 5 22:25:54 UTC 2012


I worked on something like this for an Arduino project... one of the
lessons I learned:

Look for -relative- changes in pitch.  Don't look for absolute notes.

People just don't have perfect pitch, and most people don't have pitch
memory.   One person may sing "Star spangled banner" in the key of C,
the next in F, and the next in B-flat.

-M



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