User:FloraC/Reasonable commas: Difference between revisions

From Xenharmonic Wiki
Jump to navigation Jump to search
Created page with "Thanks to @Dead Shaman. A reasonable comma in a subgroup is one which cannot be factored into two simpler commas. {| class="wikitable" |+ List of 5-limit reasonable commas..."
 
m Names
Line 8: Line 8:
! Ratio !! Monzo !! Name
! Ratio !! Monzo !! Name
|-
|-
| 2/1 || {{monzo| 1 }} || Perfect octave
| 2/1 || {{monzo| 1 }} || Octave
|-
|-
| 3/2 || {{monzo| -1 1 }} || Perfect fifth
| 3/2 || {{monzo| -1 1 }} || Perfect fifth
Line 26: Line 26:
| 25/24 || {{monzo| -3 -1 2 }} || Classic chroma
| 25/24 || {{monzo| -3 -1 2 }} || Classic chroma
|-
|-
| 27/25 || {{monzo| 0 -3 2 }} || Major limma
| 27/25 || {{monzo| 0 -3 2 }} || Large limma
|-
|-
| 81/80 || {{monzo| -4 4 -1 }} || Syntonic comma
| 81/80 || {{monzo| -4 4 -1 }} || Syntonic comma

Revision as of 12:58, 15 May 2022

Thanks to @Dead Shaman.

A reasonable comma in a subgroup is one which cannot be factored into two simpler commas.

List of 5-limit reasonable commas
Ratio Monzo Name
2/1 [1⟩ Octave
3/2 [-1 1⟩ Perfect fifth
4/3 [2 -1⟩ Perfect fourth
5/4 [-2 0 1⟩ Classic major third
6/5 [1 1 -1⟩ Classic minor third
9/8 [-3 2⟩ Major second
10/9 [1 -2 1⟩ Classic major second
16/15 [4 -1 -1⟩ Classic minor second
25/24 [-3 -1 2⟩ Classic chroma
27/25 [0 -3 2⟩ Large limma
81/80 [-4 4 -1⟩ Syntonic comma
128/125 [7 0 -3⟩ Diesis
250/243 [1 -5 3⟩ Porcupine comma
2048/2025 [11 -4 -2⟩ Diaschisma
3125/3072 [-10 -1 5⟩ Magic comma
15625/15552 [-6 -5 6⟩ Kleisma
20000/19683 [5 -9 4⟩ Tetracot comma
32805/32768 [-15 8 1⟩ Schisma
78732/78125 [2 9 -7⟩ Sensipent comma
393216/390625 [17 1 -8⟩ Würschmidt comma
1600000/1594323 [9 -13 5⟩ Amity comma
1224440064/1220703125 [8 14 -13⟩ Parakleisma
4294967296/4271484375 [32 -7 -9⟩ Escapade comma
6115295232/6103515625 [23 6 -14⟩ Vishnuzma
10485760000/10460353203 [24 -21 4⟩ Vulture comma
274877906944/274658203125 [38 -2 -15⟩ Luna comma
7629394531250/7625597484987 [1 -27 18⟩ Ennealimma
9010162353515625/9007199254740992 [-53 10 16⟩ Kwazy comma
50031545098999707/50000000000000000 [-16 35 -17⟩ Minortone comma
450359962737049600/450283905890997363 [54 -37 2⟩ Monzisma