Flute Tuner

[Mark Wieder]

Nelson-

The good news here is that a flute produces the closest thing to a
pure sine wave that you can get from a musical instrument. You'd
probably have to open the audio in port and start counting
zero-crossings and reject anything too far out of band.

Even looking at just an A-440Hz signal, though, that means looking
looking for a transition every 1.8 milliseconds. System ticks aren't
that accurate. If you're not using a machine with an accessible DSP
chip hooked up to your audio input I think you're going to be dealing
with some very low-level code - deeper than you'll be able to get with
Transcript.

-- 
-Mark Wieder
 mwieder at ahsoftware.net