Ammonite
From Xenharmonic Reference
Ammonite, 29 & 37, is a temperament generated by an accurate 13/10, such that
- 2 generators = 22/13
- 3 generators = 10/9~11/10~12/11 (hence Ammonite is a weak extension of 2.3.5.11 Porcupine)
- 4 generators = 10/7
- 9 generators = 4/3
Ammonite generates a very soft oneirotonic (5L3s) MOS with L ~= 11/10 and s ~= 14/13. It is most accurate as its 2.7/5.11/5.13/5 (or 2.(5:7:11:13)) restriction, which is technically called Tridec; Ammonite[8] provides 5:11:13 and 5:7:13 chords.
Interval chain
| # | Cents* | Approximate ratios |
|---|---|---|
| 0 | 0.0 | 1/1 |
| 1 | 454.2 | 13/10, 9/7 |
| 2 | 908.4 | 22/13 |
| 3 | 162.6 | 11/10, 12/11, 10/9 |
| 4 | 616.9 | 10/7 |
| 5 | 1071.1 | 13/7 |
| 6 | 325.3 | 6/5, 11/9 |
| 7 | 779.5 | 11/7 |
| 8 | 33.7 | 56/55 |
| 9 | 487.9 | 4/3 |
| 10 | 942.1 | 12/7 |
| 11 | 196.4 | 28/25 |
| 12 | 650.6 | 16/11 |
* In pure-13/10 tuning
| View • Talk • EditRegular temperaments | |
|---|---|
| Rank-2 | |
| Acot | Blackwood (1/5-octave) • Whitewood (1/7-octave) • Compton (1/12-octave) |
| Monocot | Meantone • Schismic • Leapday • Archy |
| Complexity 2 | Diaschismic (diploid monocot) • Pajara (diploid monocot) • Injera (diploid monocot) • Rastmatic (dicot) • Mohajira (dicot) • Intertridecimal (dicot) • Interseptimal (alpha-dicot) |
| Complexity 3 | Augmented (triploid) • Misty (triploid) • Slendric (tricot) • Porcupine (omega-tricot) |
| Complexity 4 | Diminished (tetraploid) • Tetracot (tetracot) • Buzzard (alpha-tetracot) • Squares (beta-tetracot) • Negri (omega-tetracot) |
| Complexity 5-6 | Magic (alpha-pentacot) • Amity (gamma-pentacot) • Kleismic (alpha-hexacot) • Miracle (hexacot) |
| Higher complexity | Orwell (alpha-heptacot) • Sensi (beta-heptacot) • Octacot (octacot) • Wurschmidt (beta-octacot) • Valentine (enneacot) • Ammonite (epsilon-enneacot) • Myna (beta-decacot) • Ennealimmal (enneaploid dicot) |
| Straddle-3 | A-Team (alter-tricot) • Machine (alter-monocot) |
| No-3 | Trismegistus (alpha-triseph) • Orgone (trimech) • Didacus (diseph) |
| No-octaves | Sensamagic (monogem) |
| Exotemperament | Dicot • Mavila • Father |
| Higher-rank | |
| Rank-3 | Hemifamity • Marvel • Parapyth |
