Septisemi temperaments

These are very low complexity temperaments tempering out the minor septimal semitone, 21/20, and hence equating 5/3 with 7/4, and 10/7 with 3/2.

Discussed elsewhere are mother, flat, beep, sharptone and pelogic.

Fluorine

Subgroup: 2.3.5.7

Comma list: 21/20, 243/224

Mapping: [⟨1 0 -7 -5], ⟨0 1 6 5]]

⟨⟨1 6 5 7 5 -5]]

POTE generator: ~3/2 = 663.059

Badness: 0.0556

Sodium

Subgroup: 2.3.5.7

Comma list: 21/20, 54/49

Mapping: [⟨1 1 1 2], ⟨0 2 5 3]]

⟨⟨2 5 3 3 -1 -7]]

POTE generator: ~7/6 = 320.182

Badness: 0.0558

Oxygen

Subgroup: 2.3.5.7

Comma list: 21/20, 175/162

Mapping: [⟨1 2 3 3], ⟨0 -3 -5 -2]]

⟨⟨3 5 2 1 -5 -9]]

POTE generator: ~7/6 = 169.112

Badness: 0.0599