<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=us-ascii"> <META content="MSHTML 6.00.2800.1226" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left><SPAN class=549521618-02012004><FONT = face=Garamond color=#800000>Hello,</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=549521618-02012004><FONT = face=Garamond color=#800000></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=549521618-02012004><FONT = face=Garamond color=#800000>Like Isaac, I thought I heard cleaner unisons, = but also notes sounding a lot like a note sounds when the front duplex is = muted off and is deadening the tone some. Could be the digital translation of course.</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=549521618-02012004><FONT = face=Garamond color=#800000></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=549521618-02012004><FONT = face=Garamond color=#800000>Alan McCoy</FONT></SPAN></DIV><BR> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] <B>On Behalf Of </B>Isaac sur Noos<BR><B>Sent:</B> Tuesday, December 30, 2003 3:39 PM<BR><B>To:</B> = College and University Technicians<BR><B>Subject:</B> RE: More = technology...more thought<BR></FONT><BR></DIV> <DIV></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Hello,</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>I have heard a definitive loss of sustain and less richness, as the = piano may act as if there are only 2 strings that is = understandable.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>But the immediate (or very fast) coupling, is giving a better tone at the beginning, which is also understandable  (are not you after that = effect when tuning, girls and guys ?).</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>On the Wapin list Michael Wahen have analyzed the samples (spectra, = decay, time series) and the graphs seem to confirm what I've heard (I try not to = forget that out of tune give the impression of more life and more power while = listening).</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Well it is may be a good idea to use those on those terrific spinet you = seem to work with sometime, but it does not make sense on a fine piano at all = me think (I like the 3 strings unison too much).</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>My take is also that the remaining string couples with the 2 strings = system better,so the whole unison may be easier to = obtain.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Then, What about stabilization of the tension after the = bridge ?</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>I also believe that when unison fail the cause is not in the string but = more in drift of tension in non speaking segments, or pin unsettling. A stable = unison will remain stable even if you pound on it, the piano goes out of tune = with HR changes and temperature, then of course you have different drifts = appearing, if the coupling is well done (manually I'd say) , the unison is really = long lasting usually</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003></SPAN><SPAN class=115312223-30122003></SPAN><SPAN = class=115312223-30122003><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>I like the John Page idea to try to couple at the bridge pins to fight = false beats.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>I guess it should be possible to produce with strong = piano wire little metal clamps that work the same.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>I like to know if you hear the loss of richness in those simplified = samples too.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Then have a very good last day of the year, hurry, it is almost finished !</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Greetings.</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2>Isaac OLEG</FONT></SPAN></DIV> <DIV><SPAN class=115312223-30122003><FONT face=Arial = color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><FONT face=arial size=2>If one of the coupled strings goes = flat by 4 hz, the combined pitch drop would be 2 hz.</FONT><BR><FONT face=arial size=2>  </FONT><BR><FONT face=arial size=2>If the = uncoupled string goes flat, it is business as usual for wandering unisons.</FONT><BR><FONT face=arial size=2>  </FONT><BR><FONT face=arial = size=2>The coupler will delay the overall degrading of unisons, but not prevent, reduce or = delay the failure of the uncoupled unison.</FONT><BR> <BR><FONT = face=arial size=2>So the couplers reduce the chances of an audible unison = failure over a given time period by about 50%. </FONT></DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px = solid"><FONT face=Arial color=#0000ff size=2></FONT><FONT face=Arial = color=#0000ff size=2></FONT><BR>Hmmmmmmmmmmmm - yes.<BR><BR>The audio and video = clips seem to be about as good as that kind of thing can reasonably get over IP = (Internet) transmission.  Pretty striking differences between = "before" and "after".<BR><BR>I wonder what they will sound like in the = flesh...let alone what other effects they might produce.  Kind of hard to = imagine them being made out of stainless.  What happens if they get = grunged up?<BR><BR>Ed, I'm sure we're all going to want your feedback on = this!  As I think of it, such an upright as you suggest would be a really = good place to test these things in a "real world" setting...still, it = won't fix the jumping pins and rendering = problems....<BR><BR>Best.<BR><BR>Horace<BR></BLOCKQUOTE></BLOCKQUOTE></BO= DY></HTML>