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Horace,
<p>Great to see you back on this list! I attended a demo of the spectrum
analyzer as well. It indeed was an eye opener. Rick Baldassin assisted
Chris during some of these classes. Jim, you might be able to get some
info from Rick.
<p>I wonder if the analyzer on the RCT could be used to test tonal production
changes through pinning? A lot cheaper than a B&K but with less bells
and whistles I'm sure.
<p>Don McKechnie
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<pre>Subject:
RE: Steinway "pinning" dilemma
Date:
Fri, 10 Oct 2003 09:51:27 -0700
From:
Horace Greeley <hgreeley@stanford.edu>
To:
College and University Technicians <caut@ptg.org>
Jim,
At 08:51 AM 10/10/2003 -0600, you wrote:
>List,
>
>Last week we were given a Realtime Spectrum Analyzer. We didn't know
>exactly what to do with it. Hmmm... Anyone want to suggest some tests to
>run?
If Tim remembers Chris' mechanism more clearly than I do, maybe he can give
you some details. The thing that made that series of demonstrations so
phenomenal was the ability to so precisely control the blow. If memory
serves, there is a pretty good engineering school at BYU - maybe some
enterprising students could come up with something in their (copious) free
time.
I don't think that Chris would present his work as being the end of the
experiments - rather, as places from which to begin.
Pinning makes a difference. Now you have precisely the toy, errrr, tool,
to demonstrate that fact.
I wonder, given the changes/advancements in computer technology since Chris
did most of his work...perhaps there is a way to more graphically represent
things, real time, as well as getting the numbers out. The analyzer Chris
used was a B&K, with numbered lights for a read out...very useful; but a
little more difficult to immediately apprehend.
Horace</pre>
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