<HTML><HEAD> <META http-equiv=Content-Type content="text/html;= charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1106" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial;= BACKGROUND-COLOR: #ffffff" bgColor=#ffffff> <DIV align=left><STRONG><FONT size=3></FONT></STRONG>John:</DIV> <DIV align=left> </DIV> <DIV align=left>I'm sure that the Accufork and TuneLab both= produce a sine wave.  Howver, unless you have a very= capable speaker there is going to be distortion there and= partials added.  It takes quite a good speaker to reproduce= a 440Hz sine wave with no distortion.</DIV> <DIV align=left> </DIV> <DIV align=left>dave</DIV><STRONG><FONT size=3> <DIV= align=left><BR>__________________________________________</DIV> <DIV align=left>David M. Porritt, RPT</DIV> <DIV align=left>Meadows School of the Arts</DIV> <DIV align=left>Southern Methodist University</DIV> <DIV align=left>Dallas, TX 75275</DIV> <DIV align=left><A= href="mailto:dporritt@mail.smu.edu">dporritt@mail.smu.edu</A></D= IV> <DIV align=left> </DIV> <DIV align=left><BR>----- Original message= ----------------------------------------><BR>From: John Ross= <<A= href="mailto:jrpiano@win.eastlink.ca">jrpiano@win.eastlink.ca</A= >><BR>To: Pianotech <<A= href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>><BR>Rec= eived: Mon, 23 Aug 2004 13:02:28 -0300<BR>Subject: Re: Tuning= with a fork [fork partials]</FONT></STRONG></DIV> <DIV align=left><STRONG><FONT= size=3><BR>Hi,</FONT></STRONG></DIV> <DIV><STRONG><FONT size=3>Al Sanderson told me that the= Accu-Fork, gave a pure tone, with no= harmonics.</FONT></STRONG></DIV> <DIV><STRONG><FONT size=3>Regards,</FONT></STRONG></DIV> <DIV>John M. Ross<BR>Windsor, Nova Scotia, Canada<BR><A= href="mailto:jrpiano@win.eastlink.ca">jrpiano@win.eastlink.ca</A= ></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px;= MARGIN-LEFT: 5px; BORDER-LEFT: #000000 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=BobDavis88@aol.com= href="mailto:BobDavis88@aol.com">BobDavis88@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, August 23,= 2004 12:55 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Tuning with a= fork [fork partials]</DIV> <DIV><BR></DIV> <DIV> <DIV>Joe Goss writes:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px;= BORDER-LEFT: blue 2px solid"><FONT face=Arial>To check your accu= fork open the battery compartment and look for a little<BR>white= plastic slot ( 1/8" at the most ). </FONT></BLOCKQUOTE></DIV> <DIV>Hello Joe,</DIV> <DIV> </DIV> <DIV>Thanks for the info. I didn't make myself clear. My AccuFork= is right on pitch. What I was wondering about was if the= harmonic content of a newer unit was any different from the= partial-rich output of mine.</DIV> <DIV> </DIV> <DIV>Thanks for the reply,</DIV> <DIV>Bob Davis</DIV></BLOCKQUOTE></BODY></HTML>