Sanderson Temperament

[alan and carolyn barnard]

Uh, 2 bps for 4ths? Isn't that a tad zippy?

Alan Barnard
Salem, Missouri


> [Original Message]
> From: David Andersen <david@davidandersenpianos.com>
> To: Pianotech <pianotech@ptg.org>
> Date: 05/03/2005 12:03:54 AM
> Subject: Re: Sanderson Temperament
>
> > Here's the answer I wish I had given you when you were inquiring
> > about how to hit 7 bps in the F3-A3 M3rd. The same answer applies
> > here: Remember that tuning through a temperament sequence need not
> > yield perfect results. It only need get you close enough so that you
> > can use the refinement techniques, mainly the inverse beat
> > relationships of the 4ths and 5ths. If you tune through the sequence
> > within a couple cents, you should have few expanded 5ths or
> > contracted 4ths, and checking the 4ths and 5ths can get you the rest
> > of the way to a great temperament.
> > 
> > Kent
>
>
> Great job, Kent; exactly my thinking, except I basically tune right from
the
> start with 4ths and 5ths; they're very easy for me to hear, and if all the
> 4ths are beating a slow wow-wow-wow-wow, around 2 bps, and the fifths are
> nearly pure, not really beating at all, there's an ideal ET. All the 3rds
> and 6ths checks work exactly, including contiguous 3rds. There's the
> illusion of little or no movement in the 1-5-1 or 1-4-1 triad--- (in my
> temperament, F3 to F4.) Working with open strings is much more realistic
> than working with a temperament strip, IMO; 3 strings certainly SEEM to
beat
> differently, and fit into tests differently,than one string.
>
> David A.
>
>
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