Re: [tuning-math] Glumma

  • From: Carl Lumma <carl@xxxxxxxxx>
  • To: tuning-math@xxxxxxxxxxxxx
  • Date: Fri, 12 Jul 2002 12:07:28 -0700

>Compare to
>
>lumma [1, 36/35, 8/7, 6/5, 5/4, 48/35, 10/7, 3/2, 5/3, 12/7, 9/5, 40/21]
>[[-2, 0, 0], [-1, -1, 0], [-1, 0, 0], [0, -1, 0]]

That one's called "stairs", because it looks like stairs in a rectangular
lattice.

>Inspired by Carl's 12 note, 7-limit JI scale "lumma", I hereby present
>"glumma", a modified version which now matches stelhex for number of
>complete tetrads (6.)
>
>glumma   [1, 36/35, 8/7, 6/5, 5/4, 48/35, 10/7, 3/2, 5/3, 12/7, 7/4,
>96/49]

Rock!  What pattern of scale degrees produces the chords?

-Carl

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