<!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 6.00.2900.2963" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff" bgColor=#ffffff> <DIV><STRONG><FONT face=Verdana color=#008080>Let's take the Vallotti as an example.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>The rollingball chart shows the sizes of the intervals as red, blue, green columns, and lists the offsets below each column. For the Vallotti, the offsets from ET are listed as</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    C +5.87</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    G +3.91</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    D +1.96</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    A    0.00</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    etc. to F +7.82</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>    and then C +5.87 again, </FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080>because every C on the piano is tuned 5.87 cents sharp.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>In your ETD of choice, you would enter those offsets. Note, the offsets on the charts are listed in the order of the circle of fifths. The ETD will want them in chromatic sequence, which I did not provide on the charts, so double-check when you copy them in order ... easy to transpose two numbers and screw the whole temperament.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>Now: notice the offset for A is 0; this is in order to preserve A=440. However, the cumulative effect of the Vallotti is to raise tension an average of 1.96 cents per note. So if you want to "zero out the tension" ... i.e. fool the soundboard into thinking that nothing has really changed, perhaps preserving tuning stability ... you would then "add -1.96" (or subtract 1.96) from each of the offsets, i.e. tune C at +3.91, G at +1.95, D at 0.00, A at -1.96 cents, etc.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>If you want to do these by aural methods, (and they are generally easier than ET by a long shot), you have to look elsewhere for the tuning instructions - I did not include them on my website. (I mention this possibility because you ask if you would tune an F-F temperament.)</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>Hope this helps. One of these days I will update the site, add chromatic lists of the offsets, maybe add bearing instructions for selected temperaments, add the Lehman Bach (which has two humps!), yadda yadda. Ask if more questions.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Verdana color=#008080>Jason</FONT></STRONG></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #008080 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=KeyKat88@aol.com href="mailto:KeyKat88@aol.com">KeyKat88@aol.com</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, September 18, 2006 9:44 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> A few other temperament questions</DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><STRONG><FONT face=Verdana color=#008080></FONT></STRONG><BR></DIV> <DIV>Greetings,</DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV>           If I finally pick a tuning and proceed, do I tune to A440? The Rollingball website .gif charts illistrate the temperament intervals from C to C. Do I start on middle C? If so, middle C of 523Hz (as in an A-440 tuning), or would I tune middle C lower?  Can I still tune an F to F procedure as I am used to for ET? </DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV>          Also, what does it mean on the side of the Rollingball chart where it states the following sentence: "<EM><U>To zero out total tension change, add this to each offset</U></EM>"....then it gives a number, for example the Valotti has a  -1.96 below that sentence. </DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV>         Also, on the Rollingball chart, the low C-G and E-G is different bps than octave above it. Must I follow that difference through with all the octaves C# to C#, D to D...etc, thereby giving a "stretch" to the whole piano's tuning? if that answer is yes then the whole piano is a temperament itself, and I am not copying octaves as I would do in ET!!!???? Right? Are these temperaments stretched. Woah! I have never done this before.</DIV> <DIV><STRONG><FONT face=Verdana color=#008080></FONT></STRONG> </DIV> <DIV>Julia Gottshall</DIV> <DIV>Reading, PA       </DIV></BLOCKQUOTE></BODY></HTML>