Unison coupling

[Richard Moody]

> > I have seen the Conn Stroboscope go first in one
> >direction and then backward.  Tunelab can be seen to do that
also,
> >but less I think.  Each one has issues of accuracy that can be
> >analyzed and tested. 
> >
> >---ric 
> 
> That's not the accuracy of the measuring tool, that's the pitch
drop from
> the attack phase to the dwell that I'm talking about.
> 
> Ron N

Hi Ron, 
Sorry, I don't know what you mean by "pitch drop from
 the attack phase to the dwell."  My concern is  with issues of 
"the accuracy of the measuring tool"  Does the "pitch drop from the
attack phase to the dwell" need a "tool"  to be measured?  If so,
how does that measuring tool stand up to other measuring tools? 
	A wild hunch suggests that "attack phase" is mostly noise, from
transitory shock waves resulting from the moment of impact of the
hammer, lasting milliseconds until the frequency of oscillation of
the piano wire is established. ---ric