[sdiy] Idea for tuner/display

[harrybissell]

And the hardest part of the whole thing is making the unknown
frequency a clean square wave (or ANY clean wave) unless its
from a VCO to start with...

H^) harry

Jay Schwichtenberg wrote:

> Tim,
>
> I been thinking about the same type of thing.
>
> One problem I have with the counter type stuff is the speed. At low
> freqencies these are slow. I was wondering if there might be a way to do it
> like a guitar tuner. They seem to work faster. I think the way they usually
> work is with a beat frequency.
>
> Also when doing counters you have to do some averaging to keep the readout
> from flickering in the low digits.
>
> LCD vs LED. If you are a typical electronic musician you probably work in
> dark places. LCD will need a backlight to be seen in the dark. While LCDs
> take less to run from the uP (vs scanned LEDS) they are slower.
>
> Just some thoughts.
> Jay
>
> > -----Original Message-----
> > From: owner-synth-diy at dropmix.xs4all.nl
> > [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Tim Ressel
> > Sent: Sunday, January 26, 2003 11:17 AM
> > To: Synth-Diy
> > Subject: [sdiy] Idea for tuner/display
> >
> >
> > Hey all,
> >
> > 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. Then it would display the info on the
> > LCD. An even more whacky version would do this for two
> > inputs and also calc the interval between the two.
> >
> > Comments? Ideas?
> >
> > --Tim
> >
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