3L 4s: Difference between revisions
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{{Infobox MOS | {{Infobox MOS | ||
| Name = mosh | | Name = mosh | ||
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== Theory == | == Theory == | ||
Mosh can be thought of as a midpoint between two diatonic scales which are two cyclic orders away from each other. For example, | Mosh can be thought of as a midpoint between two diatonic scales which are two cyclic orders away from each other. For example, sLsLsLs is the midpoint between the Ionian (major, LLsLLLs) and Phrygian (sLLLsLL) modes. You can prove this by simple addition: | ||
<pre> | <pre> | ||
2 1 2 2 2 1 | 2 2 1 2 2 2 1 (LLsLLLs) | ||
+ 2 2 2 1 2 2 | + 1 2 2 2 1 2 2 (sLLLsLL) | ||
= 4 3 4 3 4 | = 3 4 3 4 3 4 3 (sLsLsLs) | ||
</pre> | </pre> | ||
The rest of the equivalencies are listed in [[#Proposed names]]. | The rest of the equivalencies are listed in [[#Proposed names]]. | ||
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There are two notable harmonic entropy minima: | There are two notable harmonic entropy minima: | ||
* [[Neutral third scales]], such as dicot, hemififth, and mohajira, in which the generator is a neutral | * [[Neutral third scales]], such as dicot, hemififth, and mohajira, in which the generator is a neutral third (around 350{{c}}) and two of them make a 3/2 (702{{c}}). | ||
* [[Magic]], in which the generator is 5/4 ( | * [[Magic]], in which the generator is a flattened 5/4 (around 380{{c}}) and five of them make a 3/1 (around 1902{{c}}), though the step ratios in this range are very hard to the point of being lopsided. | ||
== Tuning ranges == | == Tuning ranges == | ||
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| 6/5 = [[Mohaha]] / ptolemy ↑ | | 6/5 = [[Mohaha]] / ptolemy ↑ | ||
| 5/4 = Mohaha / migration / [[mohajira]] | | 5/4 = Mohaha / migration / [[mohajira]] | ||
| 11/8 = Mohaha / mohamaq | | 11/8 = Mohaha / [[mohamaq ]] | ||
| 7/5 = Mohaha / [[neutrominant]] | | 7/5 = Mohaha / [[neutrominant]] | ||
| 10/7 = [[Hemif]] / [[hemififths]] | | 10/7 = [[Hemif]] / [[hemififths]] | ||