12 out of 22 experiment, cont'd.

Paul Erlich wrote, TD 688:

> Then it must be that while 4:5:6:7 is clearly your ear's "target"
> when
> you hear a dominant seventh chord, 1/7:1/6:1/5:1/4 is not as clearly
> your ear's "target" for the half-diminished seventh.

FINALLY, I understand what you mean by a "mirror" chord. You mean as if
I put a mirror right on "middle C" and did an inversion downward:
C-E-G-Bb becomes C-Ab-F-D. This is exactly like the "ontonal" "utonal"
processes we were discussing shortly back, yes??

> For different
> half-diminished chords in 22tET, approximating 5:6:7:9 rather than 1/
> 7:1/6:1/5:1/4, try ones where the root and diminished fifth are on
> one
> color and the minor third and minor seventh are on the other color.

Is this still using your 12 out of 22 scale? It can't be... I'm not
getting this. Could you please "spell out" an example in letter names??

__________ ___ __ _ _
Joseph Pehrson

--- In tuning@egroups.com, Joseph Pehrson <josephpehrson@c...> wrote:
> Paul Erlich wrote, TD 688:
>
> > Then it must be that while 4:5:6:7 is clearly your ear's "target"
> > when
> > you hear a dominant seventh chord, 1/7:1/6:1/5:1/4 is not as
clearly
> > your ear's "target" for the half-diminished seventh.
>
> FINALLY, I understand what you mean by a "mirror" chord. You mean
as if
> I put a mirror right on "middle C" and did an inversion downward:
> C-E-G-Bb becomes C-Ab-F-D. This is exactly like the "ontonal"
"utonal"
> processes we were discussing shortly back, yes??

Right -- and these chords are precisely (the 22-tET approximations
of)
the usual 7-limit otonal and utonal tetrads -- but to always work,
the
mirror would have to either be in the middle of "D" or in the middle
of "Ab" -- otherwise the keyboard itself would no longer look the
same
as before you put the mirror there.
>
> > For different
> > half-diminished chords in 22tET, approximating 5:6:7:9 rather
than 1/
> > 7:1/6:1/5:1/4, try ones where the root and diminished fifth are on
> > one
> > color and the minor third and minor seventh are on the other
color.
>
> Is this still using your 12 out of 22 scale? It can't be... I'm not
> getting this.

Whoops! My bad. I meant the root is one color and all the other notes
are the other color. Sorry!!!