<!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 bgColor=#ffffff> <DIV> </DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A href="mailto:hsrosen@gate.net" title=hsrosen@gate.net>Howard S. = Rosen</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = href="mailto:pianotech@ptg.org" title=pianotech@ptg.org>Pianotech</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, March 06, 2001 = 12:47 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> c to c = temperament</DIV> <DIV><BR></DIV><BR>  2.  Tune C3 = to middle C.  Tune the A flat below C3 to get a countable =<BR>reference = beat, then use the 3rd - 10th         = octave check (3rd =<BR>slightly slower than the 10th).  You can also = tune E flat 3 to a =<BR>countable rate and use         the 3rd - 6th = octave check (both =<BR>intervals should beat about the same rate).<BR><BR>**************<BR><BR>Hi Dave,<BR><BR>I have a question = about your C to C temperament. Since the 3rd/10th and<BR>3rd/6th octave = checks are both for a 4/2 octave, why do you suggest that the<BR>3rd beat = slightly slower than the 10th, but in the other, you suggest that<BR>the minor 3rd = beat the same as the major 6th?<BR><BR><BR>Howard S. Rosen, RPT<BR>7262 Angel = Falls Ct.<BR>Boynton Beach, Fl  33437<BR><BR><A href="mailto:hsrosen@gate.net">hsrosen@gate.net</A><BR><BR><FONT = size=2>Sorry more than a week has gone by.  I have hundreds of messages from = this list -- some I'll get to read; some I'll have to delete 'cause I just don't = have time.  Glad I caught this one, though.  I can't respond = fully because I've been up all night working in the shop and have to go to = bed now.  I'd have to ponder a while, count partials, remember which = numbers refer to which partials, etc., but I think the 3rd-10th test is for a = 4:2 octave but the minor 3rd-Major 6th test (within the octave being = tuned) is for a 3:6 or 6:3 octave.  I can't remember at this hour which is the = upper and which is the lower note.  I'll have to review this and = respond later.   Sorry . . .  = Dave</FONT></BLOCKQUOTE></BODY></HTML>