[sdiy] Tap Tempo

[Amos]

A simple tap-tempo program to feed to a micro is along the lines of:

begin program on first tap event -
measure time until second tap event
measure time between second and third tap events
average the two measured intervals
set the new tempo to be one beat = the average interval over the three taps.
(and reset the counter so that the next tap initiates the cycle again)

so a-one, a-two, a-one two three and by the downbeat you are groovin' in
tempo.

This is how tap tempo in the moog MuRF is implemented... In practice I find
it works a bit better than the simpler method of taking only one interval
between any two taps - which is less accurate (or rather requires the user
to be more accurate).

On 12/29/05, Tim Parkhurst <tim.parkhurst at gmail.com> wrote:
>
> This did come up a while ago (six months or so, I think), and the general
> consensus was that a microprocessor-based solution would be simpler and much
> more accurate. Well, simpler if you know how to program a micro. I think a
> discrete digital solution ( i.e. not involving a micro) was also proposed,
> but this would probably end up using a lot more hardware than a processor
> driven solution. Might be worth checking the archives.
>
> And no, not really off-topic at all. :)
>
>
> Tim (as simple as it gets) Servo
> --
> "Imagination is more important than knowledge." - Albert Einstein
>
> ***************************
> On 12/29/05, D A F <polaris30 at ncx.com> wrote:
> >
> > Hi all,
> >
> > sorry if this might be a little off-topic, but here goes:
> >
> > I was wondering if anyone knows how the more recent effects with "tap
> > tempo"
> > (where the period of an LFO is synched automatically with the taps from
> > a
> > foot switch) is implemented?  Does this have to be done with a processor
> > of
> > some kind, or could it be done in analog?
> >
> > thanks,
> >
> > Dave
> >
> >
> >
> >
>
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