22edo: Difference between revisions

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updated ups/down notation, added color names to the comma list, general cleanup
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| ja = 22平均律
| ja = 22平均律
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=Theory=
==Theory==


In music, ''22 equal temperament'', called 22-tet, 22-edo, or 22-et, is the scale derived by dividing the [[Octave|octave]] into 22 equally large steps. Each step represents a frequency ratio of the twenty-second root of 2, or 54.55 [[cent|cent]]s. Because it distinguishes 10/9 and 9/8, it's not meantone.
In music, ''22 equal temperament'', called 22-tet, 22-edo, or 22-et, is the scale derived by dividing the [[Octave|octave]] into 22 equally large steps. Each step represents a frequency ratio of the twenty-second root of 2, or 54.55 [[cent|cent]]s. Because it distinguishes 10/9 and 9/8, it's not meantone.
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22-et is very close to an extended "quarter-comma superpyth", a tuning analogous to quarter-comma meantone except that it tempers out the septimal comma 64:63 instead of the syntonic comma 81:80. Because of this it has nearly pure septimal major thirds (9:7).
22-et is very close to an extended "quarter-comma superpyth", a tuning analogous to quarter-comma meantone except that it tempers out the septimal comma 64:63 instead of the syntonic comma 81:80. Because of this it has nearly pure septimal major thirds (9:7).


==Intervalic Naming Systems==
==Properties of 22 equal temperament==
 
Possibly the most striking characteristic of 22-et to those not used to it is that it does '''not''' "temper out" the syntonic comma of 81/80, and therefore is not a system of [[Regular_Temperaments#meantone|meantone]] temperament. This means that 22 distinguishes a number of Pythagorean and 5-limit intervals that 12-EDO, 19-EDO, 31-EDO, ... do not distinguish, such as the two whole tones 9/8 and 10/9. Indeed, these distinctions are exaggerated in comparison to 5-limit JI and many more accurate temperaments such as [[34edo|34edo]], [[41edo|41edo]] and [[53edo|53edo]].
 
The diatonic scale it produces is instead derived from [[Superpyth|superpyth]] temperament, which despite having the same melodic structure as meantone's diatonic scale (LLsLLLs or, [[5L_2s|5L 2s]]), has thirds approximating 9/7 and 7/6, rather than 5/4 and 6/5. This means that the septimal comma of 64/63 vanishes, rather than the syntonic comma of 81/80, which is one of the core features of 22-EDO. Superpyth is melodically interesting for having a quasi-equal pentatonic scale (as the large whole tone and subminor third are rather close in size) and a more uneven heptatonic scale, as compared with 12-equal and meantone systems: step patterns 4 4 5 4 5 and 4 4 1 4 4 4 1, respectively.
 
It additionally tempers out the porcupine comma or maximal diesis of 250/243, which means that 22-EDO supports [[Porcupine|porcupine]] temperament. The generator for porcupine is a flat minor whole tone of [[10/9|10/9]], two of which is a slightly sharp [[6/5|6/5]], and three of which is a slightly flat [[4/3|4/3]], implying the existence of an equal-step tetrachord, which is characteristic of Porcupine. Porcupine is notable for being the 5-limit temperament lowest in [[Badness|badness]] which is ''not'' approximated by the familiar 12-tone equal temperament, and as such represents one excellent point of departure for examining the harmonic properties of 22-EDO. It forms [[MOSScales|MOS]]'s of 7 and 8, which in 22-EDO are tuned respectively as 4 3 3 3 3 3 3 and 3 1 3 3 3 3 3 3 (and their respective modes).
 
The 164¢ "flat minor whole tone" is a key interval in 22-EDO, in part because it functions as no less than three different consonant ratios in the [[11-limit|11-limit]]: 10/9, 11/10, and 12/11. It is thus extremely ambiguous and flexible. The trade-off is that it is very much in the cracks of the 12-equal piano, and so for most 12-equal listeners, it takes some getting used to. Simple translations of 5-limit music into 22-EDO can sound very different, with a more complex harmonic quality inevitably arising. 22edo does not contain a neutral third but both the 5-limit thirds have a "neutral-like" quality since they are tempered closer together rather than farther apart as in 12edo.
 
22-EDO also supports Orwell temperament, which uses the septimal subminor third as a generator (5 degrees) and forms MOS scales with step patterns 3 2 3 2 3 2 3 2 2 and 1 2 2 1 2 2 1 2 2 1 2 2 2. Harmonically, Orwell can be tuned more accurately in other temperaments, such as [[31edo|31edo]], [[53edo|53edo]] and [[84edo|84edo]]. But 22-equal Orwell has a leg-up on the others melodically, as the large and small steps of Orwell[9] are easier to distinguish in 22.
 
Other 5-limit commas 22-EDO tempers out include the diaschisma, 2048/2025 and the magic comma or small diesis, 3125/3072. In a diaschismic system, such as 12-et or 22-et, the [[diatonic_tritone|diatonic tritone]] [[45/32|45/32]], which is a major third above a [[major_whole_tone|major whole tone]] representing [[9/8|9/8]], is equated to its inverted form, [[64/45|64/45]]. That the magic comma is tempered out means that 22-et is a [[Regular_Temperaments#magic|magic]] system, where five major thirds make up a perfect fifth.
 
In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both [[50/49|50/49]], (the [[jubilee_comma|jubilee comma]]), and [[64/63|64/63]], (the [[Septimal_comma|septimal comma]]), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritones of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and an otonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the [[septimal_kleisma|septimal kleisma]], so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the [[orwell_comma|orwell comma]]; and the [[orwell_tetrad|orwell tetrad]] is also a chord of 22-et.
 
As 22 is divisible by 11, a 22edo instrument can play any music in [[11edo|11edo]], in the same way that 12edo can play 6edo (the whole tone scale). 11-equal is interesting for sounding melodically very similar to 12-equal (whole steps, half steps and minor thirds in the familiar 1:2:3 ratio), but harmonically very different, in particular because it lacks perfect fifths/fourths and 5-limit major thirds/minor sixths. Similarly, 22edo is melodically similar to 24edo as both contain quarter-tones and minor, neutral, and major seconds; but 22edo offers much better all-around harmonies than 24. In [[Sagittal|Sagittal]], 11 can be notated as every other note of 22.
 
==Notation==
The intervals of 22 EDO may be thought of as a system arising from both Superpyth and Porcupine temperament therefore, it makes sense to categorize each on as major and minor of each temperament. s indicates superpyth, p indicates Porcupine, because p now represents procupine and not perfect, P in perfect intervals is no longer used in this system. Instead the number is used without P and is read as either just the number or "Natural". Example: P5 becomes 5 or N5 = Perfect fifth becomes Natural fifth.
The intervals of 22 EDO may be thought of as a system arising from both Superpyth and Porcupine temperament therefore, it makes sense to categorize each on as major and minor of each temperament. s indicates superpyth, p indicates Porcupine, because p now represents procupine and not perfect, P in perfect intervals is no longer used in this system. Instead the number is used without P and is read as either just the number or "Natural". Example: P5 becomes 5 or N5 = Perfect fifth becomes Natural fifth.


==Intervals by degree (Superpyth/Porcupine)==
===Intervals by degree (Superpyth/Porcupine)===


{| class="wikitable"
{| class="wikitable"
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|}
|}


==Intervals by degree (Ups and Downs, Porcupine and Pentatonic)==
===Intervals by degree (Ups and Downs, Porcupine and Pentatonic)===
22edo intervals can also be notated using [[Ups_and_Downs_Notation|ups and downs]]. This notation allows for easy chord naming. The keyboard runs D * * * E F * * * G * * * A * * * B C * * * D. The natural notes represent the conventional chain of 5ths FCGDAEB.
22edo intervals can also be notated using [[Ups_and_Downs_Notation|ups and downs]]. This notation allows for easy chord naming. The keyboard runs D * * * E F * * * G * * * A * * * B C * * * D. The natural notes represent the conventional chain of 5ths FCGDAEB.


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|-
|-
! | [[Degree|Degree]]
! | [[Degree|Degree]]
! | Size ([[cent|Cents]])
! | [[cent|Cents]]
! colspan="3" | Ups and downs
! colspan="3" | [[Ups and Downs Notation|Ups and downs]]
! colspan="3" | Porcupine
! colspan="3" | Porcupine
! colspan="3" | Pentatonic
! colspan="3" | Pentatonic
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| style="text-align:center;" | upminor 2nd
| style="text-align:center;" | upminor 2nd
| style="text-align:center;" | ^m2
| style="text-align:center;" | ^m2
| style="text-align:center;" | Eb^
| style="text-align:center;" | ^Eb
| style="text-align:center;" | dim 2nd
| style="text-align:center;" | dim 2nd
| style="text-align:center;" | d2
| style="text-align:center;" | d2
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| style="text-align:center;" | downmajor 2nd
| style="text-align:center;" | downmajor 2nd
| style="text-align:center;" | vM2
| style="text-align:center;" | vM2
| style="text-align:center;" | Ev
| style="text-align:center;" | vE
| style="text-align:center;" | perfect 2nd
| style="text-align:center;" | perfect 2nd
| style="text-align:center;" | P2
| style="text-align:center;" | P2
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| style="text-align:center;" | upminor 3rd
| style="text-align:center;" | upminor 3rd
| style="text-align:center;" | ^m3
| style="text-align:center;" | ^m3
| style="text-align:center;" | F^
| style="text-align:center;" | ^F
| style="text-align:center;" | minor 3rd
| style="text-align:center;" | minor 3rd
| style="text-align:center;" | m3
| style="text-align:center;" | m3
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| style="text-align:center;" | downmajor 3rd
| style="text-align:center;" | downmajor 3rd
| style="text-align:center;" | vM3
| style="text-align:center;" | vM3
| style="text-align:center;" | F#v
| style="text-align:center;" | vF#
| style="text-align:center;" | major 3rd
| style="text-align:center;" | major 3rd
| style="text-align:center;" | M3
| style="text-align:center;" | M3
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| style="text-align:center;" | up-4th, dim 5th
| style="text-align:center;" | up-4th, dim 5th
| style="text-align:center;" | ^4, d5
| style="text-align:center;" | ^4, d5
| style="text-align:center;" | G^, Ab
| style="text-align:center;" | ^G, Ab
| style="text-align:center;" | major 4th
| style="text-align:center;" | major 4th
| style="text-align:center;" | M4
| style="text-align:center;" | M4
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updim 5th
updim 5th
| style="text-align:center;" | vA4, ^d5
| style="text-align:center;" | vA4, ^d5
| style="text-align:center;" | G#v,
| style="text-align:center;" | vG#,


Ab^
^Ab
| style="text-align:center;" | aug 4th,
| style="text-align:center;" | aug 4th,


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| style="text-align:center;" | aug 4th, down-5th
| style="text-align:center;" | aug 4th, down-5th
| style="text-align:center;" | A4, v5
| style="text-align:center;" | A4, v5
| style="text-align:center;" | G#, Av
| style="text-align:center;" | G#, vA
| style="text-align:center;" | minor 5th
| style="text-align:center;" | minor 5th
| style="text-align:center;" | m5
| style="text-align:center;" | m5
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| style="text-align:center;" | upminor 6th
| style="text-align:center;" | upminor 6th
| style="text-align:center;" | ^m6
| style="text-align:center;" | ^m6
| style="text-align:center;" | Bb^
| style="text-align:center;" | ^Bb
| style="text-align:center;" | minor 6th
| style="text-align:center;" | minor 6th
| style="text-align:center;" | m6
| style="text-align:center;" | m6
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| style="text-align:center;" | downmajor 6th
| style="text-align:center;" | downmajor 6th
| style="text-align:center;" | vM6
| style="text-align:center;" | vM6
| style="text-align:center;" | Bv
| style="text-align:center;" | vB
| style="text-align:center;" | major 6th
| style="text-align:center;" | major 6th
| style="text-align:center;" | M6
| style="text-align:center;" | M6
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| style="text-align:center;" | upminor 7th
| style="text-align:center;" | upminor 7th
| style="text-align:center;" | ^m7
| style="text-align:center;" | ^m7
| style="text-align:center;" | C^
| style="text-align:center;" | ^C
| style="text-align:center;" | perfect 7th
| style="text-align:center;" | perfect 7th
| style="text-align:center;" | P7
| style="text-align:center;" | P7
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| style="text-align:center;" | downmajor 7th
| style="text-align:center;" | downmajor 7th
| style="text-align:center;" | vM7
| style="text-align:center;" | vM7
| style="text-align:center;" | C#v
| style="text-align:center;" | vC#
| style="text-align:center;" | aug 7th
| style="text-align:center;" | aug 7th
| style="text-align:center;" | A7
| style="text-align:center;" | A7
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|}
|}


=Chord Names=
===Decatonic Notation===
The decatonic notation is based on Paul Erlich's decatonic scales. Unlike typical notation, the decatonic system is based on a scale of 10 tones rather than 7. This approach requires an entire re-learning of chords, intervals, and notation, but it allows 22EDO to be notated using only one pair of accidentals, and gives the opportunity to escape a heptatonic thinking pattern. The system is based on two chains of fifths: one represented by Latin letters, the other by Greek. The two chains can be looked at as two juxtaposed pentatonic scales.
 
Chain 1: C G D A E
 
Chain 2: γ δ α ε β
 
The alphabet is, in ascending order: C δ D ε E γ G α A β C
 
In this alphabet, a chain of fifths is preserved because equivalent Greek letters also represent fifths if they are the same as their Latin counterparts. For example G-D is a fifth, and so is γ-δ.
 
==Chord Names==


See also [[22 EDO Chords|22 EDO Chords]], [[Chords of orwell|Chords of Orwell]].
See also [[22 EDO Chords|22 EDO Chords]], [[Chords of orwell|Chords of Orwell]].
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| style="text-align:center;" | 10:12:15
| style="text-align:center;" | 10:12:15
| style="text-align:center;" | 0-6-13
| style="text-align:center;" | 0-6-13
| style="text-align:center;" | C Eb^ G
| style="text-align:center;" | C ^Eb G
| style="text-align:center;" | C.^m
| style="text-align:center;" | C^m
| style="text-align:center;" | C upminor
| style="text-align:center;" | C upminor
|-
|-
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| style="text-align:center;" | 4:5:6
| style="text-align:center;" | 4:5:6
| style="text-align:center;" | 0-7-13
| style="text-align:center;" | 0-7-13
| style="text-align:center;" | C Ev G
| style="text-align:center;" | C vE G
| style="text-align:center;" | C.v
| style="text-align:center;" | Cv
| style="text-align:center;" | C downmajor or C dot down
| style="text-align:center;" | C downmajor or C down
|-
|-
| style="text-align:center;" | ru
| style="text-align:center;" | ru
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| style="text-align:center;" | C major or C
| style="text-align:center;" | C major or C
|}
|}
For C.v, the period is needed because "Cv", spoken as "C down", is either a note, or a major chord Cv Ev Gv.
An up or down after the chord root affects the 3rd, 6th, 7th, and/or the 11th (every other note of a stacked-3rds chord 6-1-3-5-7-9-11-13).


The period isn't needed in Cm because there's no ups or downs immediately after the note name.
Alterations are always enclosed in parentheses, additions never are.


0-8-13-18 = C E G Bb = C7 = "C seven"
0-8-13-18 = C E G Bb = C7 = "C seven"


0-7-13-18 = C Ev G Bb = C7(v3) = "C seven, down third"
0-7-13-18 = C vE G Bb = C7(v3) = "C seven, down third"


0-8-13-21 = C E G B = CM7 = "C major seven"
0-8-13-21 = C E G B = CM7 = "C major seven"


0-7-13-20 = C Ev G Bv = C.vM7 = "C downmajor seven" (the down symbol applies to both the 3rd and the 7th)
0-7-13-20 = C vE G vB = CvM7 = "C downmajor seven"  


0-3-13 = C Dv G = C(v2)
0-3-13 = C vD G = Cv2 or C(v2) = "C down-two"


0-4-13 = C D G = C2
0-4-13 = C D G = C2
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0-9-13 = C F G = C4
0-9-13 = C F G = C4


0-10-13 = C F^ G = C(^4)
0-10-13 = C ^F G = C^4 or C(^4)


0-5-10 = C Eb Gb = Cdim
0-5-10 = C Eb Gb = Cdim


0-5-11 = C Eb Gb^ = Cdim(^5)
0-5-11 = C Eb ^Gb = Cdim(^5)


0-5-12 = C Eb Gv = Cm(v5)
0-5-12 = C Eb vG = Cm(v5)


0-5-10-15 = C Eb Gb Bbb = Cdim7
0-5-10-15 = C Eb Gb Bbb = Cdim7


0-5-11-14 = C Eb Gb^ Bbbv = Cdim7(^5,v7)
0-5-11-14 = C Eb ^Gb vBbb = Cdim7(^5,v7)


0-6-11-15 = C Eb^ Gb^ Bbb = Cdim7(^3,^5)
0-6-11-15 = C ^Eb ^Gb Bbb = Cdim7(^3,^5)


0-6-11-16 = C Eb^ Gb^ Bbb^ = C.^dim7(^5) (the up symbol applies to both the 3rd and the 7th)
0-6-11-16 = C ^Eb ^Gb ^Bbb = C^dim7(^5)


0-5-13-17 = C Eb G A = Cm6
0-5-13-17 = C Eb G A = Cm6
Sometimes doubled ups/downs are unavoidable:
0-6-12-15 = C Eb^ Gv Avv = Cm6(^3,v5,vv6), or C Eb^ Gb^^ Bbb = Cdim7(^3,^^5)


0-8-13-17 = C E G A = C6
0-8-13-17 = C E G A = C6


0-8-13-16 = C E G Av = C(v6)
0-8-13-16 = C E G vA = C,v6 = C add down-six


0-7-13-17 = C Ev G A = C6(v3)
0-7-13-17 = C vE G A = C6(v3)


0-7-13-16 = C Ev G Av = C.v6 (the down symbol applies to both the 3rd and the 6th)
0-7-13-16 = C vE G vA = Cv6


0-5-13-18 = C Eb G Bb = Cm7
0-5-13-18 = C Eb G Bb = Cm7


0-6-13-19 = C Eb^ G Bb^ = C.^m7
0-6-13-19 = C ^Eb G ^Bb = C^m7


0-8-13-21 = C E G B = CM7
0-8-13-21 = C E G B = CM7


0-7-13-20 = C Ev G Bv = C.vM7
0-7-13-20 = C vE G vB = CvM7
 
0-5-13-16 = C Eb G vA = Cm,v6 = "C minor add down-6"
 
0-8-13-19 = C E G ^Bb = C,^7 = "C add up-seven"


0-5-13-16 = C Eb G Av = Cm(v6)
0-7-13-18-26 = C vE G Bb D = C9(v3)


0-8-13-19 = C E G Bb^ = C(^7)
0-7-13-18-26-32 = C vE G Bb D vF = C9(v3)^11


0-7-13-18-26 = C Ev G Bb D = C9(v3)
Sometimes doubled ups/downs are unavoidable:


0-7-13-18-26-32 = C Ev G Bb D F^ = C9(v3,^11)
0-6-12-15 = C ^Eb vG vvA = Cm6(^3,v5,vv6), or C ^Eb ^^Gb Bbb = Cdim7(^3,^^5)


For a more complete list, see [[Ups_and_Downs_Notation#Chord names in other EDOs|Ups and Downs Notation - Chord names in other EDOs]].
For a more complete list, see [[Ups and Downs Notation#Chords and Chord Progressions|Ups and Downs Notation - Chords and Chord Progressions]].


== Scales ==
== Scales ==
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See also: [[22edo_Solfege|22edo Solfege]], [[22edo_tetrachords|22edo Tetrachords]], [[22_EDO_Chords|22 EDO Chords]], [[22edo_Modes|22edo Modes]]
See also: [[22edo_Solfege|22edo Solfege]], [[22edo_tetrachords|22edo Tetrachords]], [[22_EDO_Chords|22 EDO Chords]], [[22edo_Modes|22edo Modes]]


==Properties of 22 equal temperament==
==Rank Two Temperaments==
 
Possibly the most striking characteristic of 22-et to those not used to it is that it does '''not''' "temper out" the syntonic comma of 81/80, and therefore is not a system of [[Regular_Temperaments#meantone|meantone]] temperament. This means that 22 distinguishes a number of Pythagorean and 5-limit intervals that 12-EDO, 19-EDO, 31-EDO, ... do not distinguish, such as the two whole tones 9/8 and 10/9. Indeed, these distinctions are exaggerated in comparison to 5-limit JI and many more accurate temperaments such as [[34edo|34edo]], [[41edo|41edo]] and [[53edo|53edo]].
 
The diatonic scale it produces is instead derived from [[Superpyth|superpyth]] temperament, which despite having the same melodic structure as meantone's diatonic scale (LLsLLLs or, [[5L_2s|5L 2s]]), has thirds approximating 9/7 and 7/6, rather than 5/4 and 6/5. This means that the septimal comma of 64/63 vanishes, rather than the syntonic comma of 81/80, which is one of the core features of 22-EDO. Superpyth is melodically interesting for having a quasi-equal pentatonic scale (as the large whole tone and subminor third are rather close in size) and a more uneven heptatonic scale, as compared with 12-equal and meantone systems: step patterns 4 4 5 4 5 and 4 4 1 4 4 4 1, respectively.
 
It additionally tempers out the porcupine comma or maximal diesis of 250/243, which means that 22-EDO supports [[Porcupine|porcupine]] temperament. The generator for porcupine is a flat minor whole tone of [[10/9|10/9]], two of which is a slightly sharp [[6/5|6/5]], and three of which is a slightly flat [[4/3|4/3]], implying the existence of an equal-step tetrachord, which is characteristic of Porcupine. Porcupine is notable for being the 5-limit temperament lowest in [[Badness|badness]] which is ''not'' approximated by the familiar 12-tone equal temperament, and as such represents one excellent point of departure for examining the harmonic properties of 22-EDO. It forms [[MOSScales|MOS]]'s of 7 and 8, which in 22-EDO are tuned respectively as 4 3 3 3 3 3 3 and 3 1 3 3 3 3 3 3 (and their respective modes).
 
The 164¢ "flat minor whole tone" is a key interval in 22-EDO, in part because it functions as no less than three different consonant ratios in the [[11-limit|11-limit]]: 10/9, 11/10, and 12/11. It is thus extremely ambiguous and flexible. The trade-off is that it is very much in the cracks of the 12-equal piano, and so for most 12-equal listeners, it takes some getting used to. Simple translations of 5-limit music into 22-EDO can sound very different, with a more complex harmonic quality inevitably arising. 22edo does not contain a neutral third but both the 5-limit thirds have a "neutral-like" quality since they are tempered closer together rather than farther apart as in 12edo.
 
22-EDO also supports Orwell temperament, which uses the septimal subminor third as a generator (5 degrees) and forms MOS scales with step patterns 3 2 3 2 3 2 3 2 2 and 1 2 2 1 2 2 1 2 2 1 2 2 2. Harmonically, Orwell can be tuned more accurately in other temperaments, such as [[31edo|31edo]], [[53edo|53edo]] and [[84edo|84edo]]. But 22-equal Orwell has a leg-up on the others melodically, as the large and small steps of Orwell[9] are easier to distinguish in 22.
 
Other 5-limit commas 22-EDO tempers out include the diaschisma, 2048/2025 and the magic comma or small diesis, 3125/3072. In a diaschismic system, such as 12-et or 22-et, the [[diatonic_tritone|diatonic tritone]] [[45/32|45/32]], which is a major third above a [[major_whole_tone|major whole tone]] representing [[9/8|9/8]], is equated to its inverted form, [[64/45|64/45]]. That the magic comma is tempered out means that 22-et is a [[Regular_Temperaments#magic|magic]] system, where five major thirds make up a perfect fifth.
 
In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both [[50/49|50/49]], (the [[jubilee_comma|jubilee comma]]), and [[64/63|64/63]], (the [[Septimal_comma|septimal comma]]), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritones of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and an otonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the [[septimal_kleisma|septimal kleisma]], so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the [[orwell_comma|orwell comma]]; and the [[orwell_tetrad|orwell tetrad]] is also a chord of 22-et.
 
As 22 is divisible by 11, a 22edo instrument can play any music in [[11edo|11edo]], in the same way that 12edo can play 6edo (the whole tone scale). 11-equal is interesting for sounding melodically very similar to 12-equal (whole steps, half steps and minor thirds in the familiar 1:2:3 ratio), but harmonically very different, in particular because it lacks perfect fifths/fourths and 5-limit major thirds/minor sixths. Similarly, 22edo is melodically similar to 24edo as both contain quarter-tones and minor, neutral, and major seconds; but 22edo offers much better all-around harmonies than 24. In [[Sagittal|Sagittal]], 11 can be notated as every other note of 22.
 
===Rank Two Temperaments===
[[List_of_22et_rank_two_temperaments_by_badness|List of 22et rank two temperaments by badness]]
[[List_of_22et_rank_two_temperaments_by_badness|List of 22et rank two temperaments by badness]]


Line 973: Line 984:
|}
|}


===Commas===
==Commas==
22 EDO tempers out the following commas. (Note: This assumes the val < 22 35 51 62 76 81 |.)
22 EDO tempers out the following [[commas]]. (Note: This assumes the val < 22 35 51 62 76 81 |.)


{| class="wikitable"
{| class="wikitable"
|-
|-
! | Rational
! | [[Ratio]]
! | Monzo
! | [[Monzo]]
! | Size (Cents)
! | [[Cents]]
![[Color notation|Color Name]]
! | Name 1
! | Name 1
! | Name 2
! | Name 2
Line 988: Line 1,000:
| |<nowiki> | 1 -5 3 </nowiki>&gt;
| |<nowiki> | 1 -5 3 </nowiki>&gt;
| style="text-align:right;" | 49.17
| style="text-align:right;" | 49.17
| style="text-align:center;" |Triyo
| style="text-align:center;" | Maximal Diesis
| style="text-align:center;" | Maximal Diesis
| style="text-align:center;" | Porcupine Comma
| style="text-align:center;" | Porcupine Comma
Line 995: Line 1,008:
| |<nowiki> | -10 -1 5 </nowiki>&gt;
| |<nowiki> | -10 -1 5 </nowiki>&gt;
| style="text-align:right;" | 29.61
| style="text-align:right;" | 29.61
| style="text-align:center;" |Laquinyo
| style="text-align:center;" | Small Diesis
| style="text-align:center;" | Small Diesis
| style="text-align:center;" | Magic Comma
| style="text-align:center;" | Magic Comma
Line 1,002: Line 1,016:
| |<nowiki> | 11 -4 -2 </nowiki>&gt;
| |<nowiki> | 11 -4 -2 </nowiki>&gt;
| style="text-align:right;" | 19.55
| style="text-align:right;" | 19.55
| style="text-align:center;" |Sagugu
| style="text-align:center;" | Diaschisma
| style="text-align:center;" | Diaschisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,009: Line 1,024:
| |<nowiki> | -21 3 7 </nowiki>&gt;
| |<nowiki> | -21 3 7 </nowiki>&gt;
| style="text-align:right;" | 10.06
| style="text-align:right;" | 10.06
| style="text-align:center;" |Lasepyo
| style="text-align:center;" | Semicomma
| style="text-align:center;" | Semicomma
| style="text-align:center;" | Fokker Comma
| style="text-align:center;" | Fokker Comma
Line 1,016: Line 1,032:
| |<nowiki> | 32 -7 -9 </nowiki>&gt;
| |<nowiki> | 32 -7 -9 </nowiki>&gt;
| style="text-align:right;" | 9.49
| style="text-align:right;" | 9.49
| style="text-align:center;" |Sasa-tritrigu
| style="text-align:center;" | Escapade Comma
| style="text-align:center;" | Escapade Comma
| |  
| |  
Line 1,023: Line 1,040:
| |<nowiki> | -53 10 16 </nowiki>&gt;
| |<nowiki> | -53 10 16 </nowiki>&gt;
| style="text-align:right;" | 0.57
| style="text-align:right;" | 0.57
| style="text-align:center;" |Quadla-quadquadyo
| style="text-align:center;" | Kwazy
| style="text-align:center;" | Kwazy
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,030: Line 1,048:
| |<nowiki> | 1 0 2 -2 </nowiki>&gt;
| |<nowiki> | 1 0 2 -2 </nowiki>&gt;
| style="text-align:right;" | 34.98
| style="text-align:right;" | 34.98
| style="text-align:center;" |Biruyo
| style="text-align:center;" | Tritonic Diesis
| style="text-align:center;" | Tritonic Diesis
| style="text-align:center;" | Jubilisma
| style="text-align:center;" | Jubilisma
Line 1,037: Line 1,056:
| |<nowiki> | 6 -2 0 -1 </nowiki>&gt;
| |<nowiki> | 6 -2 0 -1 </nowiki>&gt;
| style="text-align:right;" | 27.26
| style="text-align:right;" | 27.26
| style="text-align:center;" |Ru
| style="text-align:center;" | Septimal Comma
| style="text-align:center;" | Septimal Comma
| style="text-align:center;" | Archytas' Comma
| style="text-align:center;" | Archytas' Comma
Line 1,044: Line 1,064:
| |<nowiki> | -5 -3 3 1 </nowiki>&gt;
| |<nowiki> | -5 -3 3 1 </nowiki>&gt;
| style="text-align:right;" | 21.90
| style="text-align:right;" | 21.90
| style="text-align:center;" |Zotriyo
| style="text-align:center;" | Keema
| style="text-align:center;" | Keema
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,051: Line 1,072:
| |<nowiki> | 1 5 1 -4 </nowiki>&gt;
| |<nowiki> | 1 5 1 -4 </nowiki>&gt;
| style="text-align:right;" | 20.79
| style="text-align:right;" | 20.79
| style="text-align:center;" |Quadru-ayo
| style="text-align:center;" | Nuwell
| style="text-align:center;" | Nuwell
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,058: Line 1,080:
| |<nowiki> | 0 -5 1 2 </nowiki>&gt;
| |<nowiki> | 0 -5 1 2 </nowiki>&gt;
| style="text-align:right;" | 14.19
| style="text-align:right;" | 14.19
| style="text-align:center;" |Zozoyo
| style="text-align:center;" | Sensamagic
| style="text-align:center;" | Sensamagic
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,065: Line 1,088:
| |<nowiki> | 6 3 -1 -3 </nowiki>&gt;
| |<nowiki> | 6 3 -1 -3 </nowiki>&gt;
| style="text-align:right;" | 13.07
| style="text-align:right;" | 13.07
| style="text-align:center;" |Triru-agu
| style="text-align:center;" | Orwellisma
| style="text-align:center;" | Orwellisma
| style="text-align:center;" | Orwell Comma
| style="text-align:center;" | Orwell Comma
Line 1,072: Line 1,096:
| |<nowiki> | -5 2 2 -1 </nowiki>&gt;
| |<nowiki> | -5 2 2 -1 </nowiki>&gt;
| style="text-align:right;" | 7.71
| style="text-align:right;" | 7.71
| style="text-align:center;" |Ruyoyo
| style="text-align:center;" | Septimal Kleisma
| style="text-align:center;" | Septimal Kleisma
| style="text-align:center;" | Marvel Comma
| style="text-align:center;" | Marvel Comma
Line 1,079: Line 1,104:
| |<nowiki> | 5 -7 -1 3 </nowiki>&gt;
| |<nowiki> | 5 -7 -1 3 </nowiki>&gt;
| style="text-align:right;" | 6.48
| style="text-align:right;" | 6.48
| style="text-align:center;" |Trizo-agu
| style="text-align:center;" | Hemimage
| style="text-align:center;" | Hemimage
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,086: Line 1,112:
| |<nowiki> | 11 1 -3 -2 </nowiki>&gt;
| |<nowiki> | 11 1 -3 -2 </nowiki>&gt;
| style="text-align:right;" | 5.36
| style="text-align:right;" | 5.36
| style="text-align:center;" |Saruru-atrigu
| style="text-align:center;" | Porwell
| style="text-align:center;" | Porwell
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,093: Line 1,120:
| |<nowiki> | -16 1 5 1 </nowiki>&gt;
| |<nowiki> | -16 1 5 1 </nowiki>&gt;
| style="text-align:right;" | 2.35
| style="text-align:right;" | 2.35
| style="text-align:center;" |Lazoquinyo
| style="text-align:center;" | Horwell
| style="text-align:center;" | Horwell
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,100: Line 1,128:
| |<nowiki> | -6 -8 2 5 </nowiki>&gt;
| |<nowiki> | -6 -8 2 5 </nowiki>&gt;
| style="text-align:right;" | 1.12
| style="text-align:right;" | 1.12
| style="text-align:center;" |Quinzo-ayoyo
| style="text-align:center;" | Wizma
| style="text-align:center;" | Wizma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,107: Line 1,136:
| |<nowiki> | -1 2 0 -2 1 </nowiki>&gt;
| |<nowiki> | -1 2 0 -2 1 </nowiki>&gt;
| style="text-align:right;" | 17.58
| style="text-align:right;" | 17.58
| style="text-align:center;" |Loruru
| style="text-align:center;" | Mothwellsma
| style="text-align:center;" | Mothwellsma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,114: Line 1,144:
| |<nowiki> | 2 -2 2 0 -1 </nowiki>&gt;
| |<nowiki> | 2 -2 2 0 -1 </nowiki>&gt;
| style="text-align:right;" | 17.40
| style="text-align:right;" | 17.40
| style="text-align:center;" |Luyoyo
| style="text-align:center;" | Ptolemisma
| style="text-align:center;" | Ptolemisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,121: Line 1,152:
| |<nowiki> | -3 -1 -1 0 2 </nowiki>&gt;
| |<nowiki> | -3 -1 -1 0 2 </nowiki>&gt;
| style="text-align:right;" | 14.37
| style="text-align:right;" | 14.37
| style="text-align:center;" |Lologu
| style="text-align:center;" | Biyatisma
| style="text-align:center;" | Biyatisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,128: Line 1,160:
| |<nowiki> |-4 0 3 0 ... -1</nowiki>&gt;
| |<nowiki> |-4 0 3 0 ... -1</nowiki>&gt;
| style="text-align:right;" | 13.91
| style="text-align:right;" | 13.91
| style="text-align:center;" |Thirty-wutriyo
| style="text-align:center;" | Twizzler
| style="text-align:center;" | Twizzler
| |  
| |  
Line 1,135: Line 1,168:
| |<nowiki> | 4 0 -2 -1 1 </nowiki>&gt;
| |<nowiki> | 4 0 -2 -1 1 </nowiki>&gt;
| style="text-align:right;" | 9.86
| style="text-align:right;" | 9.86
| style="text-align:center;" |Lorugugu
| style="text-align:center;" | Valinorsma
| style="text-align:center;" | Valinorsma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,142: Line 1,176:
| |<nowiki> | 7 -4 0 1 -1 </nowiki>&gt;
| |<nowiki> | 7 -4 0 1 -1 </nowiki>&gt;
| style="text-align:right;" | 9.69
| style="text-align:right;" | 9.69
| style="text-align:center;" |Saluzo
| style="text-align:center;" | Pentacircle
| style="text-align:center;" | Pentacircle
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,149: Line 1,184:
| |<nowiki> | 16 0 0 -2 -3 </nowiki>&gt;
| |<nowiki> | 16 0 0 -2 -3 </nowiki>&gt;
| style="text-align:right;" | 8.39
| style="text-align:right;" | 8.39
| style="text-align:center;" |Satrilu-aruru
| style="text-align:center;" | Orgonisma
| style="text-align:center;" | Orgonisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,156: Line 1,192:
| |<nowiki> | -7 -1 1 1 1 </nowiki>&gt;
| |<nowiki> | -7 -1 1 1 1 </nowiki>&gt;
| style="text-align:right;" | 4.50
| style="text-align:right;" | 4.50
| style="text-align:center;" |Lozoyo
| style="text-align:center;" | Keenanisma
| style="text-align:center;" | Keenanisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,163: Line 1,200:
| |<nowiki> | 2 3 1 -2 -1 </nowiki>&gt;
| |<nowiki> | 2 3 1 -2 -1 </nowiki>&gt;
| style="text-align:right;" | 3.21
| style="text-align:right;" | 3.21
| style="text-align:center;" |Lururuyo
| style="text-align:center;" | Swetisma
| style="text-align:center;" | Swetisma
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,168: Line 1,206:
|-
|-
| style="text-align:center;" | 4000/3993
| style="text-align:center;" | 4000/3993
| | &lt;<nowiki>| 5 -1 3 0 -3 </nowiki>&gt;
| | <nowiki>| 5 -1 3 0 -3 </nowiki>&gt;
| style="text-align:right;" | 3.03
| style="text-align:right;" | 3.03
| style="text-align:center;" |Triluyo
| style="text-align:center;" | Wizardharry
| style="text-align:center;" | Wizardharry
| style="text-align:center;" |  
| style="text-align:center;" |  
Line 1,177: Line 1,216:
| |<nowiki> | -3 4 -2 -2 2 </nowiki>&gt;
| |<nowiki> | -3 4 -2 -2 2 </nowiki>&gt;
| style="text-align:right;" | 0.18
| style="text-align:right;" | 0.18
| style="text-align:center;" |Bilorugu
| style="text-align:center;" | Kalisma
| style="text-align:center;" | Kalisma
| style="text-align:center;" | Gauss' Comma
| style="text-align:center;" | Gauss' Comma
Line 1,184: Line 1,224:
| |<nowiki> | -1 -2 -1 1 0 1 </nowiki>&gt;
| |<nowiki> | -1 -2 -1 1 0 1 </nowiki>&gt;
| style="text-align:right;" | 19.13
| style="text-align:right;" | 19.13
| style="text-align:center;" |Thozogu
| style="text-align:center;" | Superleap
| style="text-align:center;" | Superleap
| style="text-align:center;" |  
| style="text-align:center;" |  
| style="text-align:center;" |  
| style="text-align:center;" |  
|}
|}
== Staff Notation ==


===How to Notate 22edo in Sagittal===
===How to Notate 22edo in Sagittal===
Line 1,199: Line 1,242:
The division of the apotome into three syntonic commas also indicates 22's tempering out of the [[250/243|porcupine comma]] (which is equivalent to three syntonic commas minus a Pythagorean apotome).
The division of the apotome into three syntonic commas also indicates 22's tempering out of the [[250/243|porcupine comma]] (which is equivalent to three syntonic commas minus a Pythagorean apotome).


===How to notate 22edo with ups and downs===
===How to Notate 22edo with Ups and Downs===


Treating [[Ups_and_Downs_Notation|ups and downs]] as "fused" with sharps and flats, and never appearing separately:
Treating [[Ups_and_Downs_Notation|ups and downs]] as "fused" with sharps and flats, and never appearing separately:
Line 1,218: Line 1,261:


[[File:Tibia_in_G_for_the_book-2.png|alt=Tibia in G for the book-2.png|800x889px|Tibia in G for the book-2.png]]
[[File:Tibia_in_G_for_the_book-2.png|alt=Tibia in G for the book-2.png|800x889px|Tibia in G for the book-2.png]]
=The Decatonic System=
The decatonic system is an approach of notation based on Paul Erlich's decatonic scales. Unlike typical notation, the decatonic system is based on a scale of 10 tones rather than 7. This approach requires an entire re-learning of chords, intervals, and notation, but it allows 22EDO to be notated using only one pair of accidentals, and gives the opportunity to escape a heptatonic thinking pattern
==Decatonic Alphabet==
The system is based on two chains of fifths: one represented by Latin letters, the other by Greek. The two chains can be looked at as two juxtaposed pentatonic scales.
Chain 1: C G D A E
Chain 2: γ δ α ε β
The alphabet is, in ascending order: C δ D ε E γ G α A β C
In this alphabet, a chain of fifths is preserved because equivalent Greek letters also represent fifths if they are the same as their Latin counterparts. For example G-D is a fifth, and so is γ-δ.


==Internal links==
==Internal links==