Two undivided tetrachords and the disjunctive tone form the framework of the standard Dorian octave. In ratios, the Harmonic Framework is 1/1 4/3 3/2 2/1 or in harmonics, 6:8:9:12.
The reference tone for the Greeks was mese, which should be given the ratio 1:1. Thus, the harmonic framework as described above may be shown on an approximate pitch-height diagram thus:
ratio note 3/2 nete \ \ upper tetrachord / 9/8 paramese / > tone of disjunction 1/1 mese \ \ lower tetrachord / 3/4 hypate /
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