Hemimean clan: Difference between revisions
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The '''hemimean clan''' [[Tempering out|tempers out]] the hemimean comma, [[3136/3125]], with [[monzo]] {{monzo| 6 0 -5 2 }} | {{Technical data page}} | ||
The '''hemimean clan''' [[Tempering out|tempers out]] the hemimean comma, [[3136/3125]], with [[monzo]] {{monzo| 6 0 -5 2 }}, such that [[7/4]] is split into five steps, of which two make [[5/4]] and three make [[7/5]]; this defines the [[2.5.7 subgroup]] temperament [[didacus]], generated by a tempered hemithird of [[28/25]]. | |||
The second comma of the comma list determines which 7-limit family member we are looking at. These [[extension]]s, in general, split the [[syntonic comma]] into two, each for [[126/125]]~[[225/224]], as 3136/3125 = (126/125)/(225/224). Hemiwürschmidt adds [[2401/2400]]; hemithirds adds [[1029/1024]]; spell adds [[49/48]]. These all use the same nominal generator as didacus. | The second comma of the comma list determines which 7-limit family member we are looking at. These [[extension]]s, in general, split the [[syntonic comma]] into two, each for [[126/125]]~[[225/224]], as 3136/3125 = (126/125)/(225/224). Hemiwürschmidt adds [[2401/2400]]; hemithirds adds [[1029/1024]]; spell adds [[49/48]]. These all use the same nominal generator as didacus. | ||
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* ''[[Passion]]'' (+64/63 or 3125/3087) → [[Passion family #Septimal passion|Passion family]] | * ''[[Passion]]'' (+64/63 or 3125/3087) → [[Passion family #Septimal passion|Passion family]] | ||
* [[Meantone]] (+81/80, 126/125, 225/224) → [[Meantone family #Septimal meantone|Meantone family]] | * [[Meantone]] (+81/80, 126/125, 225/224) → [[Meantone family #Septimal meantone|Meantone family]] | ||
* ''[[Mohavila]]'' (+135/128 or 1323/1250) → [[ | * ''[[Mohavila]]'' (+135/128 or 1323/1250) → [[Mavila family #Mohavila|Mavila family]] | ||
* ''[[Cohemimabila]]'' (+65536/64827) → [[Mabila family #Cohemimabila|Mabila family]] | * ''[[Cohemimabila]]'' (+65536/64827) → [[Mabila family #Cohemimabila|Mabila family]] | ||
* ''[[Sycamore]]'' (+686/675 or 875/864) → [[Sycamore family #Septimal sycamore|Sycamore family]] | * ''[[Sycamore]]'' (+686/675 or 875/864) → [[Sycamore family #Septimal sycamore|Sycamore family]] | ||
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* ''[[Bischismic]]'' (+32805/32768) → [[Schismatic family #Bischismic|Schismatic family]] | * ''[[Bischismic]]'' (+32805/32768) → [[Schismatic family #Bischismic|Schismatic family]] | ||
* ''[[Clyde]]'' (+245/243) → [[Kleismic family #Clyde|Kleismic family]] | * ''[[Clyde]]'' (+245/243) → [[Kleismic family #Clyde|Kleismic family]] | ||
* [[Parakleismic]] (+4375/4374) → [[ | * [[Parakleismic]] (+4375/4374) → [[Parakleismic family #Parakleismic|Parakleismic family]] | ||
* ''[[Arch]]'' (+5250987/5242880) → [[Escapade family #Arch|Escapade family]] | * ''[[Arch]]'' (+5250987/5242880) → [[Escapade family #Arch|Escapade family]] | ||
* ''[[Subpental]]'' (+19683/19600) → [[Sensipent family #Sensipent|Sensipent family]] | * ''[[Subpental]]'' (+19683/19600) → [[Sensipent family #Sensipent|Sensipent family]] | ||
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== Didacus == | == Didacus == | ||
{{main|Didacus}} | {{main|Didacus}} | ||
See also its canonical extension to the 2.5.7.11 subgroup, [[#Undecimal didacus]]. | |||
[[Subgroup]]: 2.5.7 | [[Subgroup]]: 2.5.7 | ||
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[[Tp tuning #T2 tuning|RMS error]]: 0.2138 cents | [[Tp tuning #T2 tuning|RMS error]]: 0.2138 cents | ||
[[Badness]] ( | [[Badness]] (Sintel): 0.091 | ||
= Strong extensions = | = Strong extensions = | ||
{| class="wikitable center- | {| class="wikitable center-all" | ||
|+ style="font-size: 105%;" | Map to strong extensions | |+ style="font-size: 105%;" | Map to strong extensions | ||
|- | |- | ||
! rowspan=" | ! rowspan="2" | Extension !! colspan="2" | 5-limit re-restriction !! rowspan="2" | Mapping of 3 !! rowspan="2" | Tuning range* | ||
|- | |- | ||
! Temperament !! 5-limit generator location | |||
|- | |- | ||
| [[# | | [[#Hemiwürschmidt|Hemiwürschmidt]] || [[Würschmidt family#Würschmidt|Würschmidt]] || +2 || +16 || ↓ [[31edo|31]] | ||
|- | |- | ||
| [[#Spell|Spell]] || +10 || ↑ 25 | | [[#Hemithirds|Hemithirds]] || [[Luna family#Luna|Luna]] || +1 || -15 || ↑ 31 <br /> ↓ [[25edo|25]] | ||
|- | |||
| [[#Spell|Spell]] || [[Magic family#Magic|Magic]] || +2 || +10 || ↑ 25 | |||
|} | |} | ||
<nowiki />* Defined by intersection with other documented extensions | <nowiki />* Defined by intersection with other documented extensions | ||
== Hemiwürschmidt == | == Hemiwürschmidt == | ||
''[[#Strong extensions|Return to the map]]'' | |||
{{See also| Würschmidt family }} | {{See also| Würschmidt family }} | ||
'''Hemiwürschmidt''' (sometimes spelled '''hemiwuerschmidt''') is not only one of the more accurate extensions of didacus, but also the most important extension of 5-limit [[würschmidt]], even with the rather large complexity for the fifth. It tempers out [[2401/2400]], [[3136/3125]], and [[6144/6125]]. [[68edo]], [[99edo]] and [[130edo]] can all be used as tunings, but 130 is not only the most accurate, it shows how hemiwürschmidt extends to a higher limit temperament, | '''Hemiwürschmidt''' (sometimes spelled '''hemiwuerschmidt''') is not only one of the more accurate extensions of didacus, but also the most important extension of 5-limit [[würschmidt]], even with the rather large complexity for the fifth. It tempers out [[2401/2400]], [[3136/3125]], and [[6144/6125]]. [[68edo]], [[99edo]] and [[130edo]] can all be used as tunings, but 130 is not only the most accurate, it shows how hemiwürschmidt extends to a higher limit temperament, mapping 11 to 40 generators and 13 to -39. | ||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
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Mapping generators: ~2, ~25/14 | Mapping generators: ~2, ~25/14 | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 193.898 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 193.898 | ||
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{{Optimal ET sequence|legend=1| 31, 68, 99, 229, 328 }} | {{Optimal ET sequence|legend=1| 31, 68, 99, 229, 328 }} | ||
Badness (Sintel): 0.304 | |||
=== 11-limit === | === 11-limit === | ||
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Optimal tuning (POTE): ~2 = 1\1, ~28/25 = 193.840 | Optimal tuning (POTE): ~2 = 1\1, ~28/25 = 193.840 | ||
{{Optimal ET sequence|legend=1| 31, 99e, 130 | {{Optimal ET sequence|legend=1| 31, 99e, 130, 811ce }} | ||
Badness: 0.021069 | Badness: 0.021069 | ||
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=== Quadrawürschmidt === | === Quadrawürschmidt === | ||
This has been documented in Graham Breed's temperament finder as ''semihemiwürschmidt'', but ''quadrawürschmidt'' arguably makes more sense. | This has been documented in Graham Breed's temperament finder as ''semihemiwürschmidt'', but ''quadrawürschmidt'' arguably makes more sense. | ||
The generator of quadrawürschmidt is essentially a [[septimal meantone]] fifth. However, it is not used to represent [[3/2]], as 3/2 is found at the hemiwürschmidt position, 16 wholetones up. The small comma between the generator and 3/2 is taken to represent [[441/440]]. | |||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
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== Hemithirds == | == Hemithirds == | ||
''[[#Strong extensions|Return to the map]]'' | |||
{{Main| Hemithirds }} | {{Main| Hemithirds }} | ||
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{{Mapping|legend=1| 1 4 2 2 | 0 -15 2 5 }} | {{Mapping|legend=1| 1 4 2 2 | 0 -15 2 5 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 193.244 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 193.244 | ||
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* [[7-odd-limit]]: ~28/25 = {{monzo| 1/10 -1/20 0 1/20 }} | * [[7-odd-limit]]: ~28/25 = {{monzo| 1/10 -1/20 0 1/20 }} | ||
: {{monzo list| 1 0 0 0 | 5/2 3/4 0 -3/4 | 11/5 -1/10 0 1/10 | 5/2 -1/4 0 1/4 }} | : {{monzo list| 1 0 0 0 | 5/2 3/4 0 -3/4 | 11/5 -1/10 0 1/10 | 5/2 -1/4 0 1/4 }} | ||
: [[Eigenmonzo basis| | : [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.7/3 | ||
* [[9-odd-limit]]: ~28/25 = {{monzo| 6/35 -2/35 0 1/35 }} | * [[9-odd-limit]]: ~28/25 = {{monzo| 6/35 -2/35 0 1/35 }} | ||
: {{monzo list| 1 0 0 0 | 10/7 6/7 0 -3/7 | 82/35 -4/35 0 2/35 | 20/7 -2/7 0 1/7 }} | : {{monzo list| 1 0 0 0 | 10/7 6/7 0 -3/7 | 82/35 -4/35 0 2/35 | 20/7 -2/7 0 1/7 }} | ||
: [[Eigenmonzo basis| | : [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.9/7 | ||
{{Optimal ET sequence|legend=1| 25, 31, 87, 118 }} | {{Optimal ET sequence|legend=1| 25, 31, 87, 118 }} | ||
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== Spell == | == Spell == | ||
''[[#Strong extensions|Return to the map]]'' | |||
{{See also| Magic family }} | {{See also| Magic family }} | ||
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{{Mapping|legend=1| 1 0 2 2 | 0 10 2 5 }} | {{Mapping|legend=1| 1 0 2 2 | 0 10 2 5 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 189.927 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/25 = 189.927 | ||
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: mapping generators: ~2, ~75/49 | : mapping generators: ~2, ~75/49 | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~75/49 = 735.155 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~75/49 = 735.155 | ||
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: mapping generators: ~2, ~48/35 | : mapping generators: ~2, ~48/35 | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~48/35 = 551.782 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~48/35 = 551.782 | ||
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{{Mapping|legend=1| 1 6 0 -3 | 0 -19 10 25 }} | {{Mapping|legend=1| 1 6 0 -3 | 0 -19 10 25 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~75/64 = 278.800 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~75/64 = 278.800 | ||
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{{Mapping|legend=1| 1 1 2 2 | 0 29 16 40 }} | {{Mapping|legend=1| 1 1 2 2 | 0 29 16 40 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~686/675 = 24.217 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~686/675 = 24.217 | ||
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== Mowglic == | == Mowglic == | ||
The mowglic temperament (19 & 161) is an extension of the [[ | The mowglic temperament (19 & 161) is an extension of the [[Syntonic–kleismic equivalence continuum #Mowgli|mowgli temperament]] which tempers out the hemimean comma and the secanticornisma (177147/175000, laruquingu) in the 7-limit. | ||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
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{{Mapping|legend=1| 1 0 0 -3 | 0 15 22 55 }} | {{Mapping|legend=1| 1 0 0 -3 | 0 15 22 55 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~27/25 = 126.706 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~27/25 = 126.706 | ||
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{{Mapping|legend=1| 1 -4 -2 -8 | 0 31 24 60 }} | {{Mapping|legend=1| 1 -4 -2 -8 | 0 31 24 60 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~4375/3888 = 216.173 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~4375/3888 = 216.173 | ||
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== Undetrita == | == Undetrita == | ||
The undetrita temperament (111 & 118) tempers out the hemimean comma (3136/3125) and [[ | : ''For the 5-limit version, see [[Syntonic–chromatic equivalence continuum #Undetrita (5-limit)]].'' | ||
The undetrita temperament (111 & 118) tempers out the hemimean comma (3136/3125) and [[scheme comma]] (14348907/14336000) in the 7-limit; 3025/3024, 3388/3375, and 8019/8000 in the 11-limit. This temperament is related to [[11edt]], and the name ''undetrita'' is a play on the words ''undecimus'' (Latin for "eleventh") and ''[[tritave]]'' (3rd harmonic). It is also related to the [[Subgroup temperaments #No-sevens subgroup|twentcufo temperament]], which is no-sevens version of 111 & 118. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
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{{Mapping|legend=1| 1 0 -2 -8 | 0 11 30 75 }} | {{Mapping|legend=1| 1 0 -2 -8 | 0 11 30 75 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~448/405 = 172.917 | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~448/405 = 172.917 | ||
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RMS error: 0.5567 cents | RMS error: 0.5567 cents | ||
Badness ( | Badness (Sintel): 0.195 | ||
=== Tridecimal didacus === | === Tridecimal didacus === | ||
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Optimal ET sequence: {{Optimal ET sequence| 6, 25, 31, 37 }} | Optimal ET sequence: {{Optimal ET sequence| 6, 25, 31, 37 }} | ||
Badness ( | Badness (Sintel): 0.324 | ||
==== Mediantone ==== | ==== Mediantone ==== | ||
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In the full no-3's [[19-limit]], this temperament is a structure common to quite a few temperaments. It is a rank-2 version of [[orion]] with a mapping for primes 11 and 13. It is a no-3's version of 19-limit [[grosstone]] which can be seen as an extension of [[undecimal meantone]] according to the "mediant-tone" logic of this temperament, and which as aforementioned effectively doubles the complexity of the temperament as a result of finding the generator of [[~]][[19/17]][[~]][[28/25]] as ([[~]][[3/2]])<sup>2</sup>/[[2/1|2]]. It does not work so well as an extension for [[hemiwur]] to the full 19-limit, but if you want to try anyway (at the cost of primes 17 and 19), a notable patent-val tuning is [[37edo]], which finds prime 3 through the [[würschmidt]] mapping so that [[6/1]] is found at 16 generators. | In the full no-3's [[19-limit]], this temperament is a structure common to quite a few temperaments. It is a rank-2 version of [[orion]] with a mapping for primes 11 and 13. It is a no-3's version of 19-limit [[grosstone]] which can be seen as an extension of [[undecimal meantone]] according to the "mediant-tone" logic of this temperament, and which as aforementioned effectively doubles the complexity of the temperament as a result of finding the generator of [[~]][[19/17]][[~]][[28/25]] as ([[~]][[3/2]])<sup>2</sup>/[[2/1|2]]. It does not work so well as an extension for [[hemiwur]] to the full 19-limit, but if you want to try anyway (at the cost of primes 17 and 19), a notable patent-val tuning is [[37edo]], which finds prime 3 through the [[würschmidt]] mapping so that [[6/1]] is found at 16 generators. | ||
Subgroup: 2.5.7.11.13.17.19 | Subgroup: 2.5.7.11.13.17.19 | ||
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Optimal tuning (CWE): ~2 = 1\1, ~19/17 = 194.927 | Optimal tuning (CWE): ~2 = 1\1, ~19/17 = 194.927 | ||
Optimal ET sequence: {{Optimal ET sequence| 6h, 31gh, 37, 80 }} | Optimal ET sequence: {{Optimal ET sequence| 6h, 31gh, 37, 80, 117d* }} | ||
<nowiki />* 117d only appears without prime 19 | |||
Badness ( | Badness (Sintel): 0.618 | ||
==== Roulette ==== | ==== Roulette ==== | ||
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Roulette is an alternative no-threes 19-limit extension of tridecimal didacus to mediantone (the two mappings converging at [[37edo]]), equating (8/7)<sup>2</sup> to [[17/13]] in addition to 13/10, tempering out [[170/169]] and [[833/832]]; in doing so, it also tempers out the micro-comma [[2000033/2000000]] so that ([[50/49]])<sup>3</sup> is equated to [[17/16]]. The generator is then equated to 19/17 in the same way as in mediantone. | Roulette is an alternative no-threes 19-limit extension of tridecimal didacus to mediantone (the two mappings converging at [[37edo]]), equating (8/7)<sup>2</sup> to [[17/13]] in addition to 13/10, tempering out [[170/169]] and [[833/832]]; in doing so, it also tempers out the micro-comma [[2000033/2000000]] so that ([[50/49]])<sup>3</sup> is equated to [[17/16]]. The generator is then equated to 19/17 in the same way as in mediantone. | ||
Subgroup: 2.5.7.11.13.17.19 | Subgroup: 2.5.7.11.13.17.19 | ||
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Optimal ET sequence: {{Optimal ET sequence| 6g, ... 31, 37, 68, 105 }} | Optimal ET sequence: {{Optimal ET sequence| 6g, ... 31, 37, 68, 105 }} | ||
Badness ( | Badness (Sintel): 0.676 | ||
== Rectified hebrew == | == Rectified hebrew == | ||
{{Main| Rectified hebrew }} | {{Main| Rectified hebrew }} | ||
Rectified hebrew (37 & 56) is derived from the [https://individual.utoronto.ca/kalendis/hebrew/rect.htm#353 calendar by the same name]. It is leap year pattern takes a stack of 18 Metonic cycle diatonic major scales and truncates the 19th one down to its generator, 11. It adds harmonic 13 through tempering out [[4394/4375]] and spliting the generator of didacus in three. | Rectified hebrew (37 & 56) is derived from the [https://individual.utoronto.ca/kalendis/hebrew/rect.htm#353 calendar by the same name]. It is leap year pattern takes a stack of 18 Metonic cycle diatonic major scales and truncates the 19th one down to its generator, 11. It adds harmonic 13 through tempering out [[4394/4375]] and spliting the generator of didacus in three. Notably, it is the no-threes restriction of [[Sycamore family#Septimal sycamore|sycamore]]. | ||
Subgroup: 2.5.7.13 | Subgroup: 2.5.7.13 | ||
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== Isra == | == Isra == | ||
Isra results from taking every other generator of [[septimal meantone]], or from [[didacus]] if the generator is interpreted as 9/8. It is named after the Isrāʾ | Isra (''iss-RAH'') results from taking every other generator of [[septimal meantone]], or from [[didacus]] if the generator is interpreted as 9/8. It is named after the Isrāʾ night journey in the Qur'an, because it is similar to [[luna]] (septimal [[hemithirds]], a didacus extension). | ||
[[Subgroup]]: 2.9.5.7 | [[Subgroup]]: 2.9.5.7 | ||