beta dominance [12-22 scale]

Paul Erlich wrote TD 685

> Wait a minute -- Eb-G-Bb-Db is not a MAJOR 7th chord! You must have
> been actually either talking about the major 7th chord Eb-G-Bb-D, or
> the dominant 7th chord Eb-G-Bb-Db. I assumed the former in my last
> post, but if it was the latter, you were actually following my
> original prescription of what to try. Which was it?

Hi Paul...

Sorry, I mis-typed. Or more accurately, I mis-"thought." It is, of
course, the DOMINANT 7th chord I was talking about... Eb-G-Bb-Db, which
was what you wanted me to try, with root, fifth and seventh on the black
keys and the third, "G," on the white key...

This was the one where there was virtually NO beating in your 12-22
scale, compared to clearly audible beating in the 12t-ET version.

So the experiment was really a striking success.

I also, just now, tried what, I believe, you are considering the
"mirror"... E-G#-B-D, with the root, fifth and seventh on "white" keys
and the third on a black...

This produces a similar result... with almost NO beating in the 12-22
scale... a clearly audible difference from 12t-ET!

I'm finding that in a higher octave (starting on Eb5 and E5) the results
are even more strikingly different! The 12-22 chords are incredibly
more smooth and "sonorous."

________ _____ ___ _ _
Joseph Pehrson