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Forms of Tonality and Blackjack lattice

🔗Joseph Pehrson <jpehrson@rcn.com>

6/8/2003 10:52:44 AM

The green and yellow lines 7:4 and 7:6 are *reversed* on the
Blackjack lattice from the Erlich _Forms of Tonality_ booklet,
correct?? Oh well, life is never perfect...

J. Pehrson

🔗wallyesterpaulrus <wallyesterpaulrus@yahoo.com>

6/8/2003 9:40:48 PM

--- In tuning@yahoogroups.com, "Joseph Pehrson" <jpehrson@r...>
wrote:
> The green and yellow lines 7:4 and 7:6 are *reversed* on the
> Blackjack lattice from the Erlich _Forms of Tonality_ booklet,
> correct?? Oh well, life is never perfect...
>
> J. Pehrson

green should always be 7:4, yellow 7:6. where are they reversed?

🔗Joseph Pehrson <jpehrson@rcn.com>

6/9/2003 6:40:28 PM

--- In tuning@yahoogroups.com, "wallyesterpaulrus"

/tuning/topicId_44302.html#44315

<wallyesterpaulrus@y...> wrote:
> --- In tuning@yahoogroups.com, "Joseph Pehrson" <jpehrson@r...>
> wrote:
> > The green and yellow lines 7:4 and 7:6 are *reversed* on the
> > Blackjack lattice from the Erlich _Forms of Tonality_ booklet,
> > correct?? Oh well, life is never perfect...
> >
> > J. Pehrson
>
> green should always be 7:4, yellow 7:6. where are they reversed?

***Oh, I get it. They are correct but the *figures* are reversed in
the _Forms of Tonality_. In other words, you talk about the green
line being "Northwest" for 7:4. Well, in the _Blackjack_ lattice,
the *green* one is the "NorthEAST" one...

But it doesn't matter, since it's simply that the *pitches* have been
reversed on the two different lattices, correct??

Joseph

🔗wallyesterpaulrus <wallyesterpaulrus@yahoo.com>

6/10/2003 12:20:24 AM

--- In tuning@yahoogroups.com, "Joseph Pehrson" <jpehrson@r...> wrote:

> But it doesn't matter, since it's simply that the *pitches* have
been
> reversed on the two different lattices, correct??
>
> Joseph

essentially, it's the same 3-dimensional 7-limit lattice, just
oriented at a different angle so that the blackjack "slice" is
parallel to the page (or screen) . . .