Re: [tuning-math] Re: A chord analog to Fokker blocks


Gene wrote:
>There's a close relationship with periodicity blocks. Pick either major or
minor tetrads, and with those, one >particular chord element--for instance
the roots of the minor tetrads, or the major third element of the major
>tetrads. These will all individually be corresponding Fokker blocks.

I see, sort of a Carthesian product of a Fokker block with a chord then?

>Where is the 4:5:6:7 double tied circular mirroring discussed?

I wrote a posting to the Tuning List several years ago, I can't find
the specific date at the moment. In the scala archive they are the
scales *kring*.scl.
In a double tied circular mirroring a chord is inverted repeatedly
with two tones in common each time with the next inversion, until
coming back to the original.
They are closely related to Partch diamonds.

Manuel



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