[sdiy] Adding Tap Tempo to an LFO

[Amos]

---------- Forwarded message ----------
From: Amos <controlvoltage at gmail.com>
Date: Jul 18, 2005 1:07 PM
Subject: Re: [sdiy] Adding Tap Tempo to an LFO
To: Paul Perry <pfperry at melbpc.org.au>


A clock and comparator will get you your A-to-D, per Paul's post...
perhaps some kind of D-to-A scheme such that decreasing pulse duration
is translated to increasing VCO pitch voltage... It could certainly be
done, but I don't yet know how to implement such a thing myself.

-Amos

[PS Hi list, my first post here... sorry if I'm talking out my arse. 
Also hoping I replied correctly... still getting the hang of list
interaction.]



On 7/18/05, Paul Perry <pfperry at melbpc.org.au> wrote:
> Unless a LFO is digitally generated, it is pretty difficult to
> get tap tempo going.
> Typically what you do is, run an oscillator & count the cycles between the
> taps.
> Then, you can generate a pulse at the desired LFO rate, by counting to this
> number
> again...but, to make say a sine LFO at this frequency! that isn't easy.
>
> paul perry Melbourne australia
>
> ----- Original Message -----
> From: "drheqx"
>
> > I am having trouble visualizing the method for adding tap tempo to an
> > LFO. I really love that feature on my Lexicon processor. While playing
> > live you just hit the tap tempo button a few times in synch with the
> > drummer. I do it just before I need the delay effect and like magic it
> > locks the delay to the beat.
> > So if I wanted to add that feature to an LFO where would I start?
> >
>
>