User:CompactStar/Letter comma notation: Difference between revisions
CompactStar (talk | contribs) Tags: Mobile edit Mobile web edit |
CompactStar (talk | contribs) No edit summary Tags: Mobile edit Mobile web edit |
||
| Line 2: | Line 2: | ||
The '''letter comma notation''' (LCN) is a notation scheme developed by [[User:CompactStar|CompactStar]] for [[just intonation]] up to the [[31-limit]] as well as [[regular temperament]]s based on it. As with other JI notations, it is based on [[3-limit]] notation with a set of accidentals corresponding to a formal comma for each prime limit. The letters H-Z are used for these accidentals, and alternate between ascending and descending, so H is 5-limit ascending, I is 5-limit descending, J is 7-limit ascending, K is 7-limit descending and so on. This notation bears similarity to [[FJS]] but it aims to be more easily typable. | The '''letter comma notation''' (LCN) is a notation scheme developed by [[User:CompactStar|CompactStar]] for [[just intonation]] up to the [[31-limit]] as well as [[regular temperament]]s based on it. As with other JI notations, it is based on [[3-limit]] notation with a set of accidentals corresponding to a formal comma for each prime limit. The letters H-Z are used for these accidentals, and alternate between ascending and descending, so H is 5-limit ascending, I is 5-limit descending, J is 7-limit ascending, K is 7-limit descending and so on. This notation bears similarity to [[FJS]] but it aims to be more easily typable. | ||
{|class="wikitable" | |||
|- | |||
!Prime limit | |||
!Letter | |||
!Ratio | |||
!Letter | |||
!Ratio | |||
|- | |||
|5 | |||
|H | |||
|[[81/80]] | |||
|I | |||
|80/81 | |||
|- | |||
|7 | |||
|J | |||
|[[64/63]] | |||
|K | |||
|63/64 | |||
|- | |||
|11 | |||
|L | |||
|[[33/32]] | |||
|M | |||
|32/33 | |||
|- | |||
|13 | |||
|N | |||
|[[1053/1024]] | |||
|O | |||
|1024/1053 | |||
|- | |||
|17 | |||
|P | |||
|[[4131/4096]] | |||
|Q | |||
|4096/4131 | |||
|- | |||
|19 | |||
|R | |||
|[[513/512]] | |||
|S | |||
|512/513 | |||
|- | |||
|23 | |||
|T | |||
|[[736/729]] | |||
|U | |||
|729/736 | |||
|- | |||
|29 | |||
|V | |||
|[[261/256]] | |||
|W | |||
|256/261 | |||
|- | |||
|31 | |||
|X | |||
|[[32/31]] | |||
|Y | |||
|31/32 | |||
|} | |||
For example, [[5/4]] is IM3 and [[7/4]] is Km7 | |||
== Full list of formal commas == | == Full list of formal commas == | ||