Question About Setting Octaves in the High Treble

[John Formsma]

Ric,

<<Listening to beat rates,  the 17th is to be tuned so that it is slightly
faster then the 3rd, even less so but still faster then the 10th, and just
barely slower  (under 0.5 bps) then the 6th.   The 6th / 17th is a test for
a 12th below the 17th

Playing the intervals in fairly quick order as given above, it is very easy
to hear the relative beat rates and place the note to be tuned (the 17th)
inbetween. Followed up by close listening to double and singel octaves and
the 12th, you quickly get a very consistantly and crispy clean treble all
the way up.>> 

Sounds similar to the results I get for using the double octave (15) and
octave-fifth (12th). If you make them beat equally, you get what you
described in your post. Almost pure 12ths, and double octaves about 1/2 bps
or less depending on the piano. Done all the way to the top produces a sound
that is just right, IMHO, of course! ;-)

John Formsma