[sdiy] Idea for tuner/display

[Ingo Debus]

Tim Ressel wrote:
> I have a whacky idea for a uP tuner/note display that
> I want to run past y'all. This would be a little box
> with an LCD screen and an input jack or two. The uP
> behind the screen would use its timer to measure the
> input frequency and perform some math tricks to come
> up with the nearest note and how far from that note
> the input was.

I built a pitch-to-MIDI-converter that works like this a while ago. It 
doesn't have a display, but outputs MIDI note number (nearest note) 
and pitch bend (how far from that note).

I intend to use it with my flute. However, for an optical tuning 
control the pitch bend output is too fast, it's too hard to tell if 
the note is sharp or flat since it jumps around too much. It shouldn't 
be too difficult to slow this down (only for the display, not for MIDI 
output). It would be nice if this device could double as a tuner too.

Ingo