<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1400" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2>Whow, that's nice !</FONT></SPAN></DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2>I hear a high F tone in the original sample.around the 7th partial (?) =  Is it longitudinal wave,? I see it like the forth light line from the = bottom but hear it an octave above.</FONT></SPAN></DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2>The fundamental and lower partials seem to have a lot of similitude to my = ear. However, the computed sample seem a lot more harmonic than the real = piano (I even hear a minor sixth beat beginning in the recorded sample, while all = those may well be phantom tones and beat also)</FONT></SPAN></DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=382452413-10022004><FONT face=Arial color=#0000ff = size=2> <DIV><FONT face=Arial><FONT size=2><SPAN = class=382452413-10022004><FONT color=#0000ff>I am unsure on how to read the spectra, it is not = an harmonic scale I guess, or we have up to 40 = partials.</FONT></SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004>Can you add lines to show the partial ladder = scale ? I remember that is a possibility in the = software.</SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004>Anyway the software seem to work very well = when it comes to solicitation, I made some samples for a 1830 Graf, using = different stiffness wire, and noticed that in fact the soft wire gives more = sound  level because when used it is in the 60% range for the same tension.</SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004>The same is supposed to occur if one use = softer wire at the break, the tone is not supposed to be less strong, on the contrary, = a better damping of the string gives more life and power to the tone - too low solicitation gives a weak string that die earlier because of internal = damping of the metal.</SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004>Best regards, other comments are welcome .</SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004>Isaac OLEG</SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT color=#0000ff size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV></FONT></SPAN= ></DIV> <DIV><SPAN class=382452413-10022004></SPAN> </DIV> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px = solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT = face=Tahoma size=2>-----Message d'origine-----<BR><B>De :</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la = part de</B> Bernhard Stopper<BR><B>Envoyé :</B> mardi 10 février = 2004 11:21<BR><B>À :</B> Pianotech<BR><B>Objet :</B> = longitudinal waves<BR><BR></FONT></DIV> <DIV><FONT face=Arial><FONT size=2>2 pictures spectra of wrapped = strings. The 1. is measured spectrum, A1 (54.2 Hz)of a Seiler 116 upright. The 2. = spectrum is the same note computed with MiniMens with the measures of this = piano with a string length 1086 mm, core diam. 1.1 mm wrap diam. 1.4 mm blank ends = 20 mm. The regular lines are the transversal waves. Additional spectral lines = due to longitudinal waves (1. longitudinal wave on the 13. transversal) and = caused also by blank ends reflection of longitudinal/ transversal waves.<SPAN = class=382452413-10022004><FONT color=#0000ff> </FONT></SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial><FONT size=2><SPAN class=382452413-10022004></SPAN></FONT></FONT> </DIV> <DIV><FONT face=Arial><FONT size=2><SPAN class=382452413-10022004> </SPAN></FONT></FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>the sound files to hear this two spectra:</FONT></DIV> <DIV><FONT face=Arial size=2>the measured original:</FONT></DIV> <DIV> <DIV><FONT face=Arial size=2><A = href="http://www.piano-stopper.de/dl/A1_org.wav">http://www.piano-stopp= er.de/dl/A1_org.wav</A></FONT></DIV></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>the computed sound by MiniMens Simulation:</FONT></DIV> <DIV><FONT face=Arial size=2><A = href="http://www.piano-stopper.de/dl/A1_comp.wav">http://www.piano-stop= per.de/dl/A1_comp.wav</A></FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><IMG alt="" hspace=0 src="cid:382452413@10022004-296d" = align=baseline border=0><IMG alt="" hspace=0 = src="cid:382452413@10022004-2974" align=baseline border=0></DIV></BLOCKQUOTE></BODY></HTML>