Ploidacot/Monocot: Difference between revisions
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'''Monocot''' is a temperament archetype where the generator is a [[3/2]] perfect fifth, and the period is a [[2/1]] octave. In other words, it is the standard chain of fifths, repeating every octave. Monocot temperaments usually generate the (mos)diatonic scale ([[5L 2s]]) and one of its chromatic children ([[5L 7s]] or [[7L 5s]]) (though there are exotempered exceptions such as [[mavila]] ([[2L 5s]]) and [[trienstonian]] ([[5L 3s]])) and as such they are very commonly used and are a well-explored category of temperaments. | {{Breadcrumb}}{{Infobox ploidacot|Ploids=1|Shears=0|Cots=1|Pergen=[P8, P5]|Forms=5, 7, 12|Title=Monocot|Wedgie=1}}'''Monocot''' is a temperament archetype where the generator is a [[3/2]] perfect fifth, and the period is a [[2/1]] octave. In other words, it is the standard chain of fifths, repeating every octave. Monocot temperaments usually generate the (mos)diatonic scale ([[5L 2s]]) and one of its chromatic children ([[5L 7s]] or [[7L 5s]]) (though there are exotempered exceptions such as [[mavila]] ([[2L 5s]]) and [[trienstonian]] ([[5L 3s]])) and as such they are very commonly used and are a well-explored category of temperaments. | ||
== Intervals and notation == | == Intervals and notation == | ||
Monocot is the only ploidacot to have an agreed-upon, fully unambiguous scheme for interval and note names, which can be found at [[ | Monocot is the only ploidacot to have an agreed-upon, fully unambiguous scheme for interval and note names, which can be found at [[chain-of-fifths notation]]. | ||
{| class="wikitable" | {| class="wikitable" | ||
|+Monocot intervals (assuming pure fifth and octave) | |+ style="font-size: 105%;" | Monocot intervals (assuming pure fifth and octave) | ||
|- | |- | ||
! # | |||
! Steps | |||
! Notation | |||
! Name | |||
|- | |- | ||
| | | −7 | ||
| | | 113.69 | ||
| | | C# | ||
|Augmented | | Augmented unison | ||
|- | |- | ||
| | | −6 | ||
| | | 611.73 | ||
| | | F# | ||
| | | Augmented fourth | ||
|- | |- | ||
| | | −5 | ||
| | | 1,109.78 | ||
| | | B | ||
|Major | | Major seventh | ||
|- | |- | ||
| | | −4 | ||
| | | 407.82 | ||
| | | E | ||
|Major | | Major third | ||
|- | |- | ||
| | | −3 | ||
| | | 905.87 | ||
| | | A | ||
|Major | | Major sixth | ||
|- | |- | ||
| | | −2 | ||
| | | 203.91 | ||
| | | D | ||
| | | Major second | ||
|- | |- | ||
| | | −1 | ||
| | | 701.96 | ||
| | | G | ||
|Perfect | | Perfect fifth | ||
|- | |- | ||
| | | '''0''' | ||
| | | '''0''' | ||
| | | '''C''' | ||
|Perfect | | Perfect unison | ||
|- | |- | ||
| | | 1 | ||
| | | 498.04 | ||
| | | F | ||
| | | Perfect fourth | ||
|- | |- | ||
| | | 2 | ||
| | | 996.09 | ||
| | | Bb | ||
|Minor | | Minor seventh | ||
|- | |- | ||
| | | 3 | ||
| | | 294.13 | ||
| | | Eb | ||
|Minor | | Minor third | ||
|- | |- | ||
| | | 4 | ||
| | | 792.18 | ||
| | | Ab | ||
|Minor | | Minor sixth | ||
|- | |- | ||
| | | 5 | ||
| | | 90.22 | ||
| | | Db | ||
| | | Minor second | ||
|- | |- | ||
|7 | | 6 | ||
|1,086. | | 588.27 | ||
|Cb | | Gb | ||
|Diminished octave | | Diminished fifth | ||
|- | |||
| 7 | |||
| 1,086.31 | |||
| Cb | |||
| Diminished octave | |||
|} | |} | ||
| Line 90: | Line 92: | ||
=== Mavila === | === Mavila === | ||
[[Mavila]] is an exotemperament that flattens the fifth beyond the diatonic range (to around | [[Mavila]] is an exotemperament that flattens the fifth beyond the diatonic range (to around 670–680{{c}}) so that the "major third" is flatter than the "minor third", meaning that the "minor third" can be assigned to 5/4 and the "major third" can be assigned to 6/5. This has the effect of "swapping" major and minor intervals from what they are in meantone. This means that the normal chain-of-fifths interval names stop making much sense (but see in [[Mavila#Notation]]). | ||
=== Deeptone === | === Deeptone === | ||
[[Deeptone]] flattens the fifth to around 690 | [[Deeptone]] flattens the fifth to around 690{{c}}, so the major third is a [[16/13]] and the augmented third is [[5/4]]. | ||
=== Meantone === | === Meantone === | ||
[[Meantone]] can be seen as the most "basic" monocot temperament, which flattens the fifth slightly to around 696 | [[Meantone]] can be seen as the most "basic" monocot temperament, which flattens the fifth slightly to around 696{{c}} so that the major third is [[5/4]]. Consequently, the minor third becomes [[6/5]], and the major sixth becomes [[5/3]]. | ||
In the 7-limit, the augmented sixth becomes 7/4, resulting in [[septimal meantone]]. Alternately, the fifth can be flattened further (to around 693 | In the 7-limit, the augmented sixth becomes 7/4, resulting in [[septimal meantone]]. Alternately, the fifth can be flattened further (to around 693{{c}}) so that the diminished seventh is sharper than the augmented sixth. Then, it makes sense to interpret the diminished seventh as 7/4, resulting in [[flattone]] temperament. | ||
=== Schismic === | === Schismic === | ||
[[Schismic]] interprets the diminished fourth, an interval of about 384 | [[Schismic]] interprets the diminished fourth, an interval of about 384{{c}} when justly tuned, as [[5/4]]. This makes it a very accurate microtemperament, and it naturally extends to prime 19 by finding 19/16 at the minor third (called [[nestoria]]). | ||
In the 7-limit, the doubly-diminished octave, an interval of about 973 | In the 7-limit, the doubly-diminished octave, an interval of about 973{{c}} when justly tuned, can be interpreted as [[7/4]] with a small loss of accuracy compared to 5-limit schismic; this is called [[garibaldi]]. | ||
=== Superpyth === | === Superpyth === | ||
[[Superpyth]] interprets the minor seventh as [[7/4]], which suggests a tuning of the perfect fifth at around 710 | [[Superpyth]] interprets the minor seventh as [[7/4]], which suggests a tuning of the perfect fifth at around 710{{c}}. [[5/4]] can then be seen as the augmented second (for standard superpyth) or the double-augmented unison (for [[ultrapyth]], which also extends to prime 13 by setting the major third equal to [[13/10]]). | ||
=== Trienstonian === | === Trienstonian === | ||
[[Trienstonian]] is an exotemperament where the fifth is sharpened so that the major sixth is [[7/4]]. This is thus tuned best with tunings around or sharp of [[5edo]], which do not generate a (usable) diatonic scale. | |||
[[Category:Ploidacots|Monocot]] | |||