ebvt offsets found (from Jason Kanter)

[Jason Kanter]

Thanks for the kind words, Bill. Yes, I am working to update all my graphs with much better data. I have a copy of Jorgensen's Tuning now, which enables me to get the numbers more exact as well as to add a bit of commentary. I will publicize here when the new charts are up on my website. 
----- Original Message ----- 
From: <Billbrpt@AOL.COM>
To: <pianotech@ptg.org>
Sent: Saturday, August 17, 2002 8:27 AM
Subject: Fwd: ebvt offsets found (from Jason Kanter)


| List,
| 
| Jason Kanter has done some very excellent work both with finding true, 
| workable "correction figures" for my Equal Beating Victorian Temperament 
| (EBVT) and making a comprehensive and easily readable graph for it.  If he 
| makes the same kind of graph for some other commonly used temperaments, he 
| will have done very excellent and valuable work for the tuning profession.
| 
| Below are his raw figures.  In programming your ETD, just round off as would 
| be appropriate.  Still, as Jason noted, he could not address the unique but 
| very *human* way in which I stretch the octaves that no computer can yet 
| handle.  However, if you program you ETD, you will be close and you'll get a 
| good tuning.  If you want to tweak your octaves to get the exact sound I do, 
| it will be a simple matter to do that aurally once you've followed the curve 
| the ETD has produced.
| 
| Just see my website for the page on "How to Tune Tempered Octaves".  And as 
| always, see it for the way to tune the EBVT aurally.  Even that page needs to 
| be updated.  I have gone to tuning the initial F3-A3 interval at 6 beats per 
| second, then tuning a pure F3-C4 5th, an F3-F4 4:2 octave which creates a 
| pure C4-F4 4th, then filling in the Bb3 which will be a pure 4th to F3 and a 
| pure 5th to F4.  When the F3-Bb3-C4-F4 are all played together, there should 
| be a pure, beatless sound.  This provides for a certain aspect of crystal 
| pure clarity which can be found in no other historically documented Victorian 
| era temperament nor in any other contemporary mild, Well Tempered Tuning.
| 
| Furthermore, Jason noted that when this temperament is tuned correctly, the 
| C3-E3-G3 triad will sound much purer than it really is.  The C3-E3 3rd beats 
| at 3 beats per second, the E3-G3 5th beats at 6 beats per second.  This is an 
| example of what is known as *Proportionate Beating*.  In this case, for every 
| 1 beat, there are *exactly* 2 more.  In other cases there can be 2:3 and so 
| on.  Just as with *Equal Beating*, there is a unique *canceling out effect* 
| (or phenomenon, perhaps) which causes a certain cleanness or clarity which 
| cannot be produced in any other way.
| 
| While ETD programming of some historically documented temperaments can 
| perhaps produce some of these effects by happenstance, the only real way to 
| get them is by careful and deliberate design in aural tuning.
| 
| Are you reading this, David Anderson, Malibu, CA?  I like Virgil's tuning 
| too.  And that's why I asked him to demonstrate an aural ET tuning at the 
| Temperament Festival at the 1998 Convention.  His tuning held up as being the 
| *best* until it was compared side by side with mine in the final round.  The 
| rest is History.
| 
| I have asked Jason Kanter to either post his graph to the list or offer it to 
| be sent privately.  I will send it privately upon request, not wanting to 
| post any attachments to this list.  It will also be posted on my website as 
| soon as I can manage to get it on there.
| 
| Bill Bremmer RPT
| Madison, Wisconsin
|  <A HREF="http://www.billbremmer.com/">Click here: -=w w w . b i l l b r e m m e r . c o m =-</A> 
|