<HTML><FONT FACE=arial,helvetica><FONT SIZE=2>In a message dated 7/21/01 11:29:22 AM Central Daylight Time,
<BR>cybertuner@planet.nl (D.Martens) writes:
<BR>
<BR><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Does anyone amongst you have Bill Bremmer's tempered octaves tuning ,
<BR>recorded in RCT-tuningfiles or other chartform with cents offsets ?</FONT><FONT COLOR="#000000" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"></BLOCKQUOTE>
<BR></FONT><FONT COLOR="#000000" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">
<BR>Unfortunately, there is no program, either SAT, Tunelab nor RCT that
<BR>constructs octaves the way I do, although if you are tuning in ET, there may
<BR>be some of them that come close to it.
<BR>
<BR>My outer octaves are determined by making a compromise between the double
<BR>octave and the octave and 5th. For example, if you want to tune the note F5
<BR>(having already tuned from F3 to E5), you would play the double octave,
<BR>F3-F5, then find the point at which it sounds pure. Then, play the octave
<BR>and 5th interval, Bb3-F5. There will probably be a noticeable beat. Sharpen
<BR>the note F5 until the octave and 5th beat slows down but the double octave
<BR>begins to have a very slight beat. Find the point where both intervals seem
<BR>"apparently in tune" or otherwise beat exactly the same.
<BR>
<BR>This tuning idea is known as "Equal Beating". If you continue this idea all
<BR>the way to the top and a mirror image of it all the way to the bottom, you
<BR>will find that you have beautifully stretched, melodic sounding octaves. If
<BR>I want even more stretch than this method will afford, I make triple octaves
<BR>and the double octave and 5th be an exact compromise.
<BR>
<BR>This can easily be done aurally but the SAT can also show the exact same
<BR>compromise. With the SAT set on the note to be tuned, play the double octave
<BR>and then the octave and 5th. Find the point at which the lights rotate
<BR>equally, clockwise and counterclockwise and you will have the perfect
<BR>compromise. With a little practice, this can be done very quickly and easily.
<BR>
<BR>I am not familiar with how the Tunelab and RCT programs operate but it may be
<BR>possible to make and store the same compromise with those programs too. With
<BR>any of the programs, you may use the usual calculated smooth curve program,
<BR>choosing the one with the most stretch and tune it first. Then go back
<BR>through the notes in the upper and lower octaves and make the fine
<BR>adjustments that would satisfy the Equal Beating compromise.
<BR>
<BR>The only way I know of to have this idea in a program is to store your work
<BR>and use it as a programmed tuning. The writers of all three of the popular
<BR>smooth curve programs have boosted the amount of stretch available in their
<BR>programs in recent years in response to the popular demand for more stretch.
<BR>I don't know if they will be able to reproduce the Equal Beating idea some
<BR>day or not.
<BR>
<BR>I am not the only one who uses this idea, by the way. Steve Fairchild RPT
<BR>also uses the same basic idea.
<BR>
<BR>I'll send you a copy of some more extensive writing I did on this subject in
<BR>a private post.
<BR>
<BR>Thanks for your interest and good luck with it.
<BR>
<BR>Bill Bremmer RPT
<BR>Madison, Wisconsin</FONT></HTML>