15edo/Interval names

Revision as of 16:22, 28 September 2018 by Gareth.hearne (talk | contribs)
Degree Cents Igs' Input Keenan Category Kite's Colours Margo's Method SagiSpeak Aaron's Answer Ups and a-downs Gareth's Go Represented Ratios
0 0 Unison P1 w1 Unison P1 P1 P1 P1 1/1
1 80 Subminor 2nd m2 g2 Minor 2nd pai-P1 m2 ^P1 m2 25/24, 21/20, 16/15
2 160 Neutral 2nd M2 y2 Large Neutral 2nd pao-M2 NM2 (Narrow M2) vM2 M2 11/10, 12/11, 10/9
3 240 Supermajor 2nd A2/d3 w2 Large Major 2nd M2 LM2 M2 Serd* 8/7, 7/6, 9/8
4 320 Minor 3rd m3 g3 Large Minor 3rd pai-m3 Lm3 ^m3 m3 6/5, 11/9
5 400 Major 3rd M3 y3 Major 3rd pao-M3 M3 vM3 M3 5/4, 14/11
6 480 Sub 4th P4 w4 Small Perfect 4th P4 S4 (Small 4) P4 P4 4/3, 9/7, 21/16
7 560 Narrow Tritone A4 zg5 Small Tritone pai-P4 Na4/Sd5 ^P4 A4 11/8, 7/5
8 640 Wide Tritone d5 ry4 Large Tritone pao-P5 La4/Wd5 vP5 d5 16/11, 10/7
9 720 Super 5th P5 w5 Large Perfect 5th P5 L5 P5 P5 3/2, 14/9, 32/21
10 800 Minor 6th m6 g6 Minor 6th pai-m6 m6 ^m6 m6 8/5, 11/7
11 880 Major 6th M6 y6 Small Major 6th pao-M6 SM6 vM6 M6 5/3, 18/11
12 960 Subminor 7th A6/d7 w7 Small Minor 7th m7 SM7 m7 Sinth* 7/4, 12/7, 16/9
13 1040 Neutral 7th m7 g7 Small Neutral 7th pai-m7 Wm7 ^m7 m7 20/11, 11/6, 9/5
14 1120 Supermajor 7th M7 y7 Major 7th pao-P8 M7 vP8 M7 48/25, 40/21, 15/8
15 1200 Octave P8 w8 Octave P8 P8 P8 P8 2/1

*'Serd' and 'Sinth' are Portmanteaux of Second and Third; and Sixth and Seventh respectively. These intervals represent exact half Perfect 4ths and Perfect 5ths, and replace the "regular" interval name. I have put them in there to gain functionality at the cost of losing familiarity/introducing novelty in addition to 'HO', the half-octave. My (Gareth's) system at this stage is the same as Dave Keenan's but for the addition of these. I suppose they could just be optional additional names for those steps. I was led to this after not finding any reason to change Dave's system, but not liking that it led to A2/d3 for the 240c interval in 5n-edos, and A6/d7 for the 960c interval. Seems weird.

Sagi-Speak, Ups and Downs, and Colours are all great, but are completely new ideas that can be linked to on the pages. Sagi-Speak and Ups are directly linked to the two main options for notation.

I like Igs' and Dave's systems the best I think. They are very different. Both are 'size' based rather than 'function', but the point of reference for Igs' is 12edo, which would be more familiar to new readers. Dave's uses JI / 72edo alterations two short chains of the edos best fifth - giving the perfect and neutral intervals, so is malleable in it's application to edos, and more able to reflect the 'function' of the intervals in an edo. I've added a few functional labels to it. Might be best to have those in brackets. At this stage I would like to see both on every edo page. Igs' has a point that his extra-diatonic names need not or perhaps should not be associated with ratios. Dave's on the other hand benifit from such an association. Perhaps an edo page could start with Igs' in the intervals section without ratios as he first edits, and in the temperament section Dave's names can be included.

I've done this for 72edo as well.