Erac: Difference between revisions
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Eracs, short for error accidentals, are | '''Eracs''', short for error accidentals, are symbols that denote error cancelation in a subgroup. This is especially important in the context of [[Straddle primes]]. | ||
{| class="wikitable" | |||
|+Erac Meanings | |||
|- | |||
|< | |||
|Flat by a set arbitrary amount. | |||
|- | |||
|<> | |||
|Critically flat/sharp. | |||
|- | |||
|> | |||
|Sharp by a set arbitrary amount. | |||
|} | |||
Eracs can be placed before or after a number, although it is preferred in ratios for the denominator to have the erac adjacent to the slash. Eracs on the denominator have an inverse effect on the size of a tempered ratio. | |||
For example, 37edo could be called 2.<<3.>3.5.7.11.13, such that adding the flat 3 and two sharp 3s results in a good 27. | For example, 37edo could be called 2.<<3.>3.5.7.11.13, such that adding the flat 3 and two sharp 3s results in a good 27. | ||
See also: erac temperament optimization [[https://spoogly.website/tools/gto.html]] | See also: erac temperament optimization [[https://spoogly.website/tools/gto.html]] | ||
[[Category:Atypical ratios]] | [[index.php?title=Category:Atypical ratios]] | ||
Revision as of 05:42, 16 December 2025
This page or section is a work in progress. It may lack sufficient justification, content, or organization, and is subject to future overhaul.
Eracs, short for error accidentals, are symbols that denote error cancelation in a subgroup. This is especially important in the context of Straddle primes.
| < | Flat by a set arbitrary amount. |
| <> | Critically flat/sharp. |
| > | Sharp by a set arbitrary amount. |
Eracs can be placed before or after a number, although it is preferred in ratios for the denominator to have the erac adjacent to the slash. Eracs on the denominator have an inverse effect on the size of a tempered ratio.
For example, 37edo could be called 2.<<3.>3.5.7.11.13, such that adding the flat 3 and two sharp 3s results in a good 27.
See also: erac temperament optimization [[1]]
