Mint temperaments

Revision as of 11:01, 1 January 2025 by FloraC (talk | contribs) (Spell 1\1 in decimal, note the badness metric being used, and misc. cleanup)

This is a collection of low complexity, high error temperaments tempering out the septimal quarter-tone, 36/35. 36 is both a square and a triangular number, and this helps make 36/35 a septimal interval of considerable significance.

Temperaments discussed elsewhere include

Progression

For the 5-limit version, see Miscellaneous 5-limit temperaments #Lafayette.

Progression, named by Gene Ward Smith in 2011[1] can be described as the 8d & 9 temperament, and 17edo is an obvious tuning for it.

Subgroup: 2.3.5.7

Comma list: 36/35, 392/375

Mapping[1 1 2 2], 0 5 3 7]]

mapping generators: ~2, ~15/14

Wedgie⟨⟨ 5 3 7 -7 -3 8 ]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~15/14 = 140.927

Optimal ET sequence8d, 9, 17c

Badness (Smith): 0.048356

11-limit

Subgroup: 2.3.5.7.11

Comma list: 36/35, 56/55, 77/75

Mapping: [1 1 2 2 3], 0 5 3 7 4]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~12/11 = 140.747

Optimal ET sequence: 8d, 9, 17c

Badness (Smith): 0.026050

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 26/25, 36/35, 56/55, 66/65

Mapping: [1 1 2 2 3 3], 0 5 3 7 4 6]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~13/12 = 140.751

Optimal ET sequence: 8d, 9, 17c

Badness (Smith): 0.018158

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 26/25, 36/35, 51/50, 56/55, 66/65

Mapping: [1 1 2 2 3 3 4], 0 5 3 7 4 6 1]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~13/12 = 141.404

Optimal ET sequence: 8d, 9, 17cg

Badness (Smith): 0.016743

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 26/25, 36/35, 51/50, 56/55, 57/55, 66/65

Mapping: [1 1 2 2 3 3 4 4], 0 5 3 7 4 6 1 2]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~13/12 = 140.479

Optimal ET sequence: 8d, 9, 17cg

Badness (Smith): 0.016841

Subklei

For the 5-limit version, see Miscellaneous 5-limit temperaments #Delorean.

Subgroup: 2.3.5.7

Comma list: 36/35, 1029/1000

Mapping[1 3 4 4], 0 -6 -7 -5]]

Wedgie⟨⟨ 6 7 5 -3 -9 -8 ]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 284.219

Optimal ET sequence4, 17c, 21, 38c

Badness (Smith): 0.061101

11-limit

Subgroup: 2.3.5.7.11

Comma list: 36/35, 77/75, 352/343

Mapping: [1 3 4 4 7], 0 -6 -7 -5 -15]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 283.253

Optimal ET sequence: 17c, 55ccd

Badness (Smith): 0.044651

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 26/25, 36/35, 66/65, 352/343

Mapping: [1 3 4 4 7 7], 0 -6 -7 -5 -15 -14]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 282.856

Optimal ET sequence: 17c

Badness (Smith): 0.032324

Subkla

Subgroup: 2.3.5.7.11

Comma list: 36/35, 56/55, 1029/1000

Mapping: [1 3 4 4 3], 0 -6 -7 -5 2]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 283.822

Optimal ET sequence: 4, 17c, 21, 38ce, 55ccde

Badness (Smith): 0.047247

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 36/35, 56/55, 66/65, 640/637

Mapping: [1 3 4 4 3 3], 0 -6 -7 -5 2 3]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 283.882

Optimal ET sequence: 4, 17c, 21, 38ce, 55ccde

Badness (Smith): 0.036701

Slurpee

For the 5-limit version, see Miscellaneous 5-limit temperaments #Slurpee.

Subgroup: 2.3.5.7

Comma list: 36/35, 51200/50421

Mapping[1 2 3 3], 0 -7 -11 -3]]

Wedgie⟨⟨ 7 11 3 1 -15 -24 ]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~21/20 = 72.303

Optimal ET sequence16, 17c, 33, 50cd, 83bccd

Badness (Smith): 0.114869

11-limit

Subgroup: 2.3.5.7.11

Comma list: 36/35, 121/120, 352/343

Mapping: [1 2 3 3 4], 0 -7 -11 -3 -9]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~21/20 = 72.297

Optimal ET sequence: 16, 17c, 33, 50cd, 83bccd

Badness (Smith): 0.050514

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 36/35, 66/65, 143/140, 352/343

Mapping: [1 2 3 3 4 4], 0 -7 -11 -3 -9 -5]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~21/20 = 72.409

Optimal ET sequence: 16, 17c, 33, 83bccd

Badness (Smith): 0.033102

Penta

For the 5-limit version, see Syntonic–diatonic equivalence continuum #University.

Subgroup: 2.3.5.7

Comma list: 28/25, 36/35

Mapping[1 1 2 2], 0 3 2 4]]

Wedgie⟨⟨ 3 2 4 -4 -2 4 ]]

Optimal tunings:

  • POTE: ~2 = 1200.000, ~6/5 = 239.977

Optimal ET sequence1bd, 5

Badness (Smith): 0.046882

Shallowtone

For the 5-limit version, see Syntonic–chromatic equivalence continuum #Shallowtone (5-limit).

Subgroup: 2.3.5.7

Comma list: 36/35, 295245/262144

Mapping[1 0 18 -16], 0 1 -10 12]]

Optimal tunings:

  • CTE: ~2 = 1200.000, ~3/2 = 681.2780
  • CWE: ~2 = 1200.000, ~3/2 = 681.2447

Optimal ET sequence7, 30b, 37b

Badness (Smith): 0.308

11-limit

Subgroup: 2.3.5.7.11

Comma list: 36/35, 45/44, 72171/65536

Mapping: [1 0 18 -16 16], 0 1 -10 12 -8]]

Optimal tunings:

  • CTE: ~2 = 1200.000, ~3/2 = 681.2538
  • CWE: ~2 = 1200.000, ~3/2 = 681.3267

Optimal ET sequence: 7, 30b, 37b

Badness (Smith): 0.130

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 27/26, 36/35, 45/44, 16731/16384

Mapping: [1 0 18 -16 16 -1], 0 1 -10 12 -8 3]]

Optimal tunings:

  • CTE: ~2 = 1200.000, ~3/2 = 681.2374
  • CWE: ~2 = 1200.000, ~3/2 = 681.2669

Optimal ET sequence: 7, 30b, 37b

Badness (Smith): 0.0773

Notes