<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Farrell wrote:
<blockquote TYPE=CITE><style></style>
The exchange was: <font color="#FF0000">Dan
wrote:</font>
<br><font color="#FF0000">> ....when all other features such as</font>
<br><font color="#FF0000">> strings, hammers, board, action tuning are
correct but the duplex is out of</font>
<br><font color="#FF0000">> tune, by tuning the duplex the sustain increases
from 100 to 300%. That is a</font>
<br><font color="#FF0000">> tone that lasts 3 to 4 seconds after tuning
the duplex scale will last from 6</font>
<br><font color="#FF0000">> to fifteen seconds.</font> <font color="#FF0000">If
the tone only lasts 3 to 4 seconds, what kind of piano is this that all
other features such as strings, hammers, board, action and tuning are correct?
Sounds like something is broke to me.</font> <font color="#FF0000">Terry
Farrell</font> What appears inconsistent here follows: The subject
piano is said to have good strings, good hammers, a good soundboard, a
good action, and a good tuning - and I think it is fair to say that the
suggestion here is that the piano is a good piano, in good shape, and nothing
is wrong with it. My comment was meant to suggest that if the piano only
has 3 to 4 second sustain time, that there is in fact something wrong with
the piano - in fact it may be poorly designed, or lacks appropriate downbearing,
has a collapsed soundboard - or perhaps it is the presence of the rear
duplex shiny thingees that is choking the sustain?</blockquote>
<p><br>Hmm... I dont see how these things could be choking sustain... unless
they are simply too close to the bridge period, and even then I am not
convinced its been shown that too short a back length directly sustain.
<p>Seems that here again we have yet another one of those areas where when
it comes right down to it, there has yet to be presented any real data
to support any of the claims one way or the other. Lots and lots of "personal
experiences".
<p>Ran into an interesting site the other day that might make this checkable
for anyone with a left over piezo tweeter and a decent FFT program. I will
re-read it and post it if it seems to be what I thought it was.
<p>RicB
<p>--
<br>Richard Brekne
<br>RPT, N.P.T.F.
<br>UiB, Bergen, Norway
<br><A HREF="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</A>
<br><A HREF="http://home.broadpark.no/~rbrekne/ricmain.html">http://home.broadpark.no/~rbrekne/ricmain.html</A>
<br> </html>