<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" = http-equiv=Content-Type> <META content="MSHTML 5.00.2614.3500" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV> </DIV> <DIV><FONT face=Arial size=2>----- Original Message ----- </FONT> <DIV><FONT face=Arial size=2>From: Roger Jolly <<A href="mailto:baldyam@sk.sympatico.ca">baldyam@sk.sympatico.ca</A>></= FONT></DIV> <DIV><FONT face=Arial size=2>To: <<A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>></FONT></DIV> <DIV><FONT face=Arial size=2>Sent: Tuesday, June 20, 2000 7:55 = PM</FONT></DIV> <DIV><FONT face=Arial size=2>Subject: Re: String = coupling.</FONT></DIV></DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Also in every case, the unison sounded = rougher than I can tune it aurally.<BR>Touching up aurally, the unison pitch drop = disappeared again, or was<BR>greatly reduced. Checking each string individually = against the display,<BR>they weren't precisely the same anymore, but the unison as a = whole was on<BR>pitch and sounded good. <BR><BR>Why?<BR> </FONT></DIV> <DIV><FONT face=Arial size=2><EM>Because it was done = aurally!!</EM></FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2> Hi Ron,<BR>          &nbsp= ; At least you restored my sanity, well the little that I never<BR> had. = With a new set of hammers, very carefully mated to the strings, I = have<BR> noted that the partial pattern is very different on the centre string, by<BR> single straight line needling up the cup line to pop the cup = and then re<BR> mating, similar patterns were obtained on all 3 strings.</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2><EM>Card, level the strings....no = "popping" the "cup line??" then remate???</EM></FONT></DIV> <DIV><FONT face=Arial size=2><EM>Simpley shape the the hammers = (eliminates the "cup") then voice!!</EM></FONT></DIV> <DIV><FONT face=Arial size=2><BR> The ETD unison will now both = show  and sound correct.</FONT></DIV> <DIV><FONT face=Arial size=2><EM> </EM></FONT></DIV> <DIV><FONT face=Arial size=2> The only conclusion</FONT><FONT = face=Arial size=2> on my part is that the ear is a remarkable instrument,  = in that it can<BR> compensate in a manner that is amazing, when dealing with = slightly false<BR> beats and mis aligned partials.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2><EM>Then learn to use = it!</EM></FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Please pass the straight = jacket.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2><EM>It's all yours. = 8~)</EM></FONT></DIV> <DIV><FONT face=Arial size=2><BR> Bob Moffatt <BR></FONT></DIV></BODY></HTML>