Meantone family: Difference between revisions

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The '''meantone family''' is the family of rank-2 temperaments that temper out the syntonic comma, [[81/80]], and thus can all be seen as extensions of [[meantone]]. The [[period]] is an [[octave]], the [[generator]] is a [[3/2|fifth]], and four fifths go to make up a [[5/1]] interval.
The '''meantone family''' is the family of [[rank-2 temperament]]s that [[tempering out|temper out]] the syntonic comma, [[81/80]], and thus can all be seen as [[extension]]s of [[meantone]].  


== Meantone ==
== Meantone ==
{{Main| Meantone }}
{{Main| Meantone }}
Meantone is characterized by an [[2/1|octave]] [[period]], a [[3/2|fifth]] [[generator]], and the relationship that four fifths go to make up a [[5/1|5th harmonic]].


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
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[[Badness]] (Smith): 0.007381
[[Badness]] (Smith): 0.007381


=== Extensions ===
=== Overview to extensions ===
The second comma of the normal comma list defines which [[7-limit]] family member we are looking at.
The second comma of the normal comma list defines which [[7-limit]] family member we are looking at.
* Flattertone adds {{monzo| -24 17 0 -1 }}, finding the ~7/4 at the double-augmented sixth. It is well-tuned flat of 26edo.
* Flattertone adds {{monzo| -24 17 0 -1 }}, finding the [[~]][[7/4]] at the double-augmented sixth, for a tuning between flat of 26edo.
* Flattone adds {{monzo| -17 9 0 1 }}, finding the ~7/4 at the diminished seventh, It is well-tuned between 19edo and 26edo.
* Flattone adds {{monzo| -17 9 0 1 }}, finding the ~7/4 at the diminished seventh, for a tuning between 26edo and 19edo.
* Septimal meantone adds [[Harrison's comma|{{monzo| -13 10 0 -1 }}]], finding the ~[[7/4]] at the augmented sixth (diesis-flat minor seventh). It is well-tuned between 12edo and 19edo.
* Septimal meantone adds [[Harrison's comma|{{monzo| -13 10 0 -1 }}]], finding the ~7/4 at the augmented sixth, for a tuning between 19edo and 12edo.
* Dominant adds [[64/63|{{monzo| 6 -2 0 -1 }}]], finding the ~7/4 at the minor seventh. It is well-tuned between 5edo and 12edo.
* Dominant adds [[64/63|{{monzo| 6 -2 0 -1 }}]], finding the ~7/4 at the minor seventh, for a tuning between 12edo and 5edo.
* Sharptone adds [[28/27|{{monzo| 2 -3 0 1 }}]], finding the ~7/4 at the major sixth. It is never exactly well-tuned, but 5edo is the only [[diamond monotone]] tuning, and even it has a terrible ~5/4. As such, it is an exotemperament.
* Sharptone adds [[28/27|{{monzo| 2 -3 0 1 }}]], finding the ~7/4 at the major sixth, for an [[exotemperament]] never exactly well-tuned, and where 5edo is the only [[diamond monotone]] tuning, with a terrible 5-limit part.  
Those all have a fifth as generator.
Those all have a fifth as generator.
* Injera adds {{monzo| -7 8 0 -2 }} with a half-octave period.
* Injera adds {{monzo| -7 8 0 -2 }} with a half-octave period.