33edo: Difference between revisions
ArrowHead294 (talk | contribs) mNo edit summary |
→21st century: Add Bryan Deister's ''33edo riff'' (2025) |
||
(42 intermediate revisions by 8 users not shown) | |||
Line 1: | Line 1: | ||
{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
33edo is | === Structural properties === | ||
While relatively uncommon, 33edo is actually quite an interesting system. As a multiple of [[11edo]], it approximates the 7th and 11th harmonics via [[orgone]] temperament (see [[26edo]]). 33edo also tunes the 13th harmonic slightly flat, allowing it to approximate the 21st and 17th harmonics as well, having a [[3L 7s]] with {{nowrap|L {{=}} 4|s {{=}} 3}}. The 33c ({{val| 33 52 76 93 }}) and 33cd ({{val| 33 52 76 92 }}) mappings temper out [[81/80]] and can be used to represent [[1/2-comma meantone]], a [[Meantone family#Flattertone|"flattertone"]] tuning where the whole tone is [[10/9]] in size. Indeed, the perfect fifth is tuned about 11{{c}} flat, and two stacked fifths fall only 0.6{{c}} flat of 10/9. Leaving the scale be would result in the standard diatonic scale ([[5L 2s]]) having minor seconds of four steps and whole tones of five steps. This also results in common practice minor and major chords becoming more supraminor and submajor in character, making everything sound almost neutral in quality. | |||
Instead of the flat 19-step fifth you may use the 20-step sharp fifth, over 25{{c}} sharp. Two of these lead to a 9/8 of 7\33, which is about 22/19 in size and may be counted as a small third. Between the flat 5\33 version of 9/8 and the sharp 7\33 version there is, of course, a {{nowrap|6\33 {{=}} 2\[[11edo|11]]}} interval of 218{{c}}. Together, these add up to {{nowrap|6\33 + 5\33 {{=}} 11\33 {{=}} 1\3}}, or 400{{c}}, the same major third as 12edo. We also have both a 327{{c}} minor third ({{nowrap|9\33 {{=}} 6\22 {{=}} 3\11}}), the same as that of [[22edo]], and a flatter 8\33 third of 291{{c}}, which if you like could also be called a flat 19th harmonic, but much more accurately a 13/11 sharp by 1.7{{c}} (if you use the patent val it is an extremely inaccurate 6/5). Another talent it has is that 7/5 is tuned quite accurately by 16\33, and we may put two 8\33 versions of 13/11 together to produce the [[cuthbert triad]]. The 8\33 generator, with MOS of size 5, 9, and 13, gives plenty of scope for these, as well as the 11th, 13th, and 19th harmonics (taking the generator as a 19/16) which are relatively well in tune. | |||
33edo contains an accurate approximation of the [[Bohlen–Pierce]] scale with 4\33 near [[13edt|1\13edt]]. | |||
33edo | Other notable 33edo scales are [[diasem]] with {{nowrap|L:m:s {{=}} 5:3:1}} and [[5L 4s]] with {{nowrap|L:s {{=}} 5:2}}. This step ratio for 5L 4s is great for its semitone size of 72.7{{c}}. | ||
=== Odd harmonics === | |||
{{Harmonics in equal|33}} | |||
33edo is not especially good at representing all rational intervals in the [[7-limit]], but it does very well on the 7-limit [[k*N subgroups|3*33 subgroup]] 2.27.15.21.11.13. On this subgroup it tunes things to the same tuning as [[99edo]], and as a subgroup patent val it tempers out the same commas. The 99 equal temperaments hemififths, amity, parakleismic, hemiwuerschmidt, ennealimmal and hendecatonic can be reduced to this subgroup and give various possibilities for MOS scales, etc. In particular, the [[terrain]] 2.7/5.9/5 subgroup temperament can be tuned via the 5\33 generator. The full system of harmony provides the optimal patent val for [[slurpee]] temperament in the 5-, 7-, 11-, and 13-limits. | |||
While it might not be the most harmonically accurate temperament, it is structurally quite interesting, and it approximates the full 19-limit consort in its own way. You could even say it tunes the 23rd and 29th harmonics ten cents flat if you were so inclined; as well as getting within two cents of the 37th. | |||
=== | === Miscellany === | ||
33 is also the number of years in the Iranian calendar's leap cycle, where leap year is inserted once every 4 or 5 years. This corresponds to the [[1L 7s]] with the step ratio of 5:4. | |||
== Intervals == | == Intervals == | ||
{| class="wikitable center-all" | {| class="wikitable center-all" | ||
|- | |- | ||
! # | ! rowspan="2" |Step # | ||
! ET | |||
! colspan="2" | Just | |||
! rowspan="2" | Difference<br>(ET minus Just) | |||
! rowspan="2" colspan="3" | Extended Pythagorean notation | |||
|- | |||
! Cents | |||
! Interval | |||
! Cents | ! Cents | ||
|- | |- | ||
| 0 | | 0 | ||
| | | 0 | ||
| [[1/1]] | | [[1/1]] | ||
| 0 | |||
| 0 | |||
| Perfect Unison | | Perfect Unison | ||
| P1 | | P1 | ||
Line 39: | Line 47: | ||
| 36.364 | | 36.364 | ||
| [[48/47]] | | [[48/47]] | ||
| 36.448 | |||
| −0.085 | |||
| Augmented Unison | | Augmented Unison | ||
| A1 | | A1 | ||
Line 46: | Line 56: | ||
| 72.727 | | 72.727 | ||
| [[24/23]] | | [[24/23]] | ||
| 73.681 | |||
| −0.953 | |||
| Double-aug 1sn | | Double-aug 1sn | ||
| AA1 | | AA1 | ||
Line 53: | Line 65: | ||
| 109.091 | | 109.091 | ||
| [[16/15]] | | [[16/15]] | ||
| 111.731 | |||
| −2.640 | |||
| Diminished 2nd | | Diminished 2nd | ||
| d2 | | d2 | ||
Line 60: | Line 74: | ||
| 145.455 | | 145.455 | ||
| [[12/11]] | | [[12/11]] | ||
| 150.637 | |||
| −5.183 | |||
| Minor 2nd | | Minor 2nd | ||
| m2 | | m2 | ||
Line 67: | Line 83: | ||
| 181.818 | | 181.818 | ||
| [[10/9]] | | [[10/9]] | ||
| 182.404 | |||
| −0.586 | |||
| Major 2nd | | Major 2nd | ||
| M2 | | M2 | ||
Line 74: | Line 92: | ||
| 218.182 | | 218.182 | ||
| [[17/15]] | | [[17/15]] | ||
| 216.687 | |||
| +1.495 | |||
| Augmented 2nd | | Augmented 2nd | ||
| A2 | | A2 | ||
Line 81: | Line 101: | ||
| 254.545 | | 254.545 | ||
| [[15/13]] | | [[15/13]] | ||
| 247.741 | |||
| +6.804 | |||
| Double-aug 2nd/Double-dim 3rd | | Double-aug 2nd/Double-dim 3rd | ||
| AA2/dd3 | | AA2/dd3 | ||
Line 88: | Line 110: | ||
| 290.909 | | 290.909 | ||
| [[13/11]] | | [[13/11]] | ||
| 289.210 | |||
| +1.699 | |||
| Diminished 3rd | | Diminished 3rd | ||
| d3 | | d3 | ||
Line 95: | Line 119: | ||
| 327.273 | | 327.273 | ||
| [[6/5]] | | [[6/5]] | ||
| 315.641 | |||
| +11.631 | |||
| Minor 3rd | | Minor 3rd | ||
| m3 | | m3 | ||
Line 101: | Line 127: | ||
| 10 | | 10 | ||
| 363.636 | | 363.636 | ||
| [[ | | [[16/13]] | ||
| 359.472 | |||
| +4.164 | |||
| Major 3rd | | Major 3rd | ||
| M3 | | M3 | ||
Line 109: | Line 137: | ||
| 400.000 | | 400.000 | ||
| [[5/4]] | | [[5/4]] | ||
| 386.314 | |||
| +13.686 | |||
| Augmented 3rd | | Augmented 3rd | ||
| A3 | | A3 | ||
Line 116: | Line 146: | ||
| 436.364 | | 436.364 | ||
| [[9/7]] | | [[9/7]] | ||
| 435.084 | |||
| +1.280 | |||
| Double-dim 4th | | Double-dim 4th | ||
| dd4 | | dd4 | ||
Line 123: | Line 155: | ||
| 472.727 | | 472.727 | ||
| [[21/16]] | | [[21/16]] | ||
| 470.781 | |||
| +1.946 | |||
| Diminished 4th | | Diminished 4th | ||
| d4 | | d4 | ||
Line 130: | Line 164: | ||
| 509.091 | | 509.091 | ||
| [[4/3]] | | [[4/3]] | ||
| 498.045 | |||
| +11.046 | |||
| Perfect 4th | | Perfect 4th | ||
| P4 | | P4 | ||
Line 137: | Line 173: | ||
| 545.455 | | 545.455 | ||
| [[11/8]] | | [[11/8]] | ||
| 551.318 | |||
| −5.863 | |||
| Augmented 4th | | Augmented 4th | ||
| A4 | | A4 | ||
Line 144: | Line 182: | ||
| 581.818 | | 581.818 | ||
| [[7/5]] | | [[7/5]] | ||
| 582.513 | |||
| −0.694 | |||
| Double-aug 4th | | Double-aug 4th | ||
| AA4 | | AA4 | ||
Line 151: | Line 191: | ||
| 618.182 | | 618.182 | ||
| [[10/7]] | | [[10/7]] | ||
| 617.488 | |||
| +0.694 | |||
| Double-dim 5th | | Double-dim 5th | ||
| dd5 | | dd5 | ||
Line 158: | Line 200: | ||
| 654.545 | | 654.545 | ||
| [[16/11]] | | [[16/11]] | ||
| 648.682 | |||
| +5.863 | |||
| Diminished 5th | | Diminished 5th | ||
| d5 | | d5 | ||
Line 165: | Line 209: | ||
| 690.909 | | 690.909 | ||
| [[3/2]] | | [[3/2]] | ||
| 701.955 | |||
| −11.046 | |||
| Perfect 5th | | Perfect 5th | ||
| P5 | | P5 | ||
Line 172: | Line 218: | ||
| 727.273 | | 727.273 | ||
| [[32/21]] | | [[32/21]] | ||
| 729.219 | |||
| -1.946 | |||
| Augmented 5th | | Augmented 5th | ||
| A5 | | A5 | ||
Line 179: | Line 227: | ||
| 763.636 | | 763.636 | ||
| [[14/9]] | | [[14/9]] | ||
| 764.916 | |||
| −1.280 | |||
| Double-aug 5th | | Double-aug 5th | ||
| AA5 | | AA5 | ||
Line 186: | Line 236: | ||
| 800.000 | | 800.000 | ||
| [[8/5]] | | [[8/5]] | ||
| 813.686 | |||
| −13.686 | |||
| Double-dim 6th | | Double-dim 6th | ||
| d6 | | d6 | ||
Line 193: | Line 245: | ||
| 836.364 | | 836.364 | ||
| [[13/8]] | | [[13/8]] | ||
| 840.528 | |||
| −4.164 | |||
| Minor 6th | | Minor 6th | ||
| m6 | | m6 | ||
Line 200: | Line 254: | ||
| 872.727 | | 872.727 | ||
| [[5/3]] | | [[5/3]] | ||
| 884.359 | |||
| −11.631 | |||
| Major 6th | | Major 6th | ||
| M6 | | M6 | ||
Line 207: | Line 263: | ||
| 909.091 | | 909.091 | ||
| [[22/13]] | | [[22/13]] | ||
| 910.790 | |||
| −1.699 | |||
| Augmented 6th | | Augmented 6th | ||
| A6 | | A6 | ||
Line 214: | Line 272: | ||
| 945.455 | | 945.455 | ||
| [[12/7]] | | [[12/7]] | ||
| 933.129 | |||
| +12.325 | |||
| Double-aug 6th/Double-dim 7th | | Double-aug 6th/Double-dim 7th | ||
| AA6/dd7 | | AA6/dd7 | ||
Line 221: | Line 281: | ||
| 981.818 | | 981.818 | ||
| [[30/17]] | | [[30/17]] | ||
| 983.313 | |||
| −1.495 | |||
| Diminished 7th | | Diminished 7th | ||
| d7 | | d7 | ||
Line 228: | Line 290: | ||
| 1018.182 | | 1018.182 | ||
| [[9/5]] | | [[9/5]] | ||
| 1017.596 | |||
| +0.586 | |||
| Minor 7th | | Minor 7th | ||
| m7 | | m7 | ||
Line 235: | Line 299: | ||
| 1054.545 | | 1054.545 | ||
| [[11/6]] | | [[11/6]] | ||
| 1049.363 | |||
| +5.183 | |||
| Major 7th | | Major 7th | ||
| M7 | | M7 | ||
Line 242: | Line 308: | ||
| 1090.909 | | 1090.909 | ||
| [[15/8]] | | [[15/8]] | ||
| 1088.268 | |||
| +2.640 | |||
| Augmented 7th | | Augmented 7th | ||
| A7 | | A7 | ||
Line 249: | Line 317: | ||
| 1127.273 | | 1127.273 | ||
| [[23/12]] | | [[23/12]] | ||
| 1126.319 | |||
| −0.953 | |||
| Double-dim 8ve | | Double-dim 8ve | ||
| dd8 | | dd8 | ||
Line 256: | Line 326: | ||
| 1163.636 | | 1163.636 | ||
| [[47/24]] | | [[47/24]] | ||
| 1163.551 | |||
| +0.085 | |||
| Diminished 8ve | | Diminished 8ve | ||
| d8 | | d8 | ||
Line 263: | Line 335: | ||
| 1200 | | 1200 | ||
| [[2/1]] | | [[2/1]] | ||
| 1200 | |||
| 0 | |||
| Perfect Octave | | Perfect Octave | ||
| P8 | | P8 | ||
| D | | D | ||
|} | |} | ||
== Notation == | |||
=== Standard notation === | |||
Because the [[chromatic semitone]] in 33edo is 1 step, 33edo can be notated using only naturals, sharps, and flats. However, many key signatures will require double- and triple-sharps and flats, which means that notation in distant keys can be very unwieldy. | |||
{{sharpness-sharp1}} | |||
=== Sagittal notation === | |||
This notation uses the same sagittal sequence as EDOs [[23edo#Sagittal notation|23]] and [[28edo#Sagittal notation|28]]. | |||
<imagemap> | |||
File:33-EDO_Sagittal.svg | |||
desc none | |||
rect 80 0 300 50 [[Sagittal_notation]] | |||
rect 399 0 559 80 [https://sagittal.org#periodic-table Periodic table of EDOs with sagittal notation] | |||
rect 20 80 399 106 [[Fractional_3-limit_notation#Bad-fifths_limma-fraction_notation | limma-fraction notation]] | |||
default [[File:33-EDO_Sagittal.svg]] | |||
</imagemap> | |||
== Approximation to JI == | |||
{{Q-odd-limit intervals}} | |||
{{Q-odd-limit intervals|32.87|apx=val|header=none|tag=none|title=15-odd-limit intervals by 33cd val mapping}} | |||
== Nearby equal temperaments == | == Nearby equal temperaments == | ||
Line 273: | Line 369: | ||
== Regular temperament properties == | == Regular temperament properties == | ||
{| class="wikitable center-4 center-5 center-6" | {| class="wikitable center-4 center-5 center-6" | ||
|- | |||
! rowspan="2" | [[Subgroup]] | ! rowspan="2" | [[Subgroup]] | ||
! rowspan="2" | [[Comma list | ! rowspan="2" | [[Comma list]] | ||
! rowspan="2" | [[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" | Optimal<br>8ve | ! rowspan="2" | Optimal<br>8ve stretch (¢) | ||
! colspan="2" | Tuning | ! colspan="2" | Tuning error | ||
|- | |- | ||
! [[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
Line 297: | Line 394: | ||
|- | |- | ||
| 2.3.5.7 | | 2.3.5.7 | ||
| 81/80, | | 49/48, 81/80, 1875/1792 | ||
| {{mapping| 33 52 76 | | {{mapping| 33 52 76 92 }} (33cd) | ||
| + | | +6.29 | ||
| | | 3.77 | ||
| | | 10.31 | ||
|- | |- | ||
| 2.3.5.7.11 | | 2.3.5.7.11 | ||
| 45/44, 81/80, | | 45/44, 49/48, 81/80, 1375/1344 | ||
| {{mapping| 33 52 76 | | {{mapping| 33 52 76 92 114 }} (33cd) | ||
| + | | +5.36 | ||
| | | 3.84 | ||
| | | 10.50 | ||
|- | |- | ||
| 2.3.5.7.11.13 | | 2.3.5.7.11.13 | ||
| 45/44, 65/64, 81/80, | | 45/44, 49/48, 65/64, 81/80, 275/273 | ||
| {{mapping| 33 52 76 | | {{mapping| 33 52 76 92 114 122 }} (33cd) | ||
| + | | +4.65 | ||
| | | 3.84 | ||
| | | 10.52 | ||
|} | |} | ||
=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
{| class="wikitable center-all left-5" | {| class="wikitable center-all left-5" | ||
|+ style="font-size: 105%;" | Table of rank-2 temperaments by generator | |||
|- | |- | ||
! Periods<br> per 8ve | ! Periods<br>per 8ve | ||
! Generator | ! Generator* | ||
! Cents | ! Cents* | ||
! Associated | ! Associated<br>ratio* | ||
! | ! Temperaments | ||
|- | |- | ||
| 1 | | 1 | ||
| 2\33 | | 2\33 | ||
| 72. | | 72.73 | ||
| 21/20 | | 21/20 | ||
| [[Slurpee]] | | [[Slurpee]] (33) | ||
|- | |- | ||
| 1 | | 1 | ||
| 4\33 | | 4\33 | ||
| 145. | | 145.45 | ||
| 12/11 | | 12/11 | ||
| [[Bohpier]] | | [[Bohpier]] (33cd) | ||
|- | |- | ||
| 1 | | 1 | ||
| 7\33 | | 7\33 | ||
| 254. | | 254.55 | ||
| 8/7 | | 8/7 | ||
| [[Godzilla]] | | [[Godzilla]] (33cd) | ||
|- | |- | ||
| 1 | | 1 | ||
| 8\33 | | 8\33 | ||
| 290. | | 290.91 | ||
| 25/21 | | 25/21 | ||
| [[Quasitemp]] | | [[Quasitemp]] (33b) | ||
|- | |- | ||
| 1 | | 1 | ||
| 10\33 | | 10\33 | ||
| 363. | | 363.64 | ||
| 49/40 | | 49/40 | ||
| [[ | | [[Submajor]] (33ee) / [[interpental]] (33e) | ||
|- | |- | ||
| 1 | | 1 | ||
| 14\33 | | 14\33 | ||
| 509. | | 509.09 | ||
| 4/3 | | 4/3 | ||
| [[ | | [[Flattertone]] (33cd)<br>[[Deeptone]] a.k.a. tragicomical (33) | ||
|- | |- | ||
| 1 | | 1 | ||
| 16\33 | | 16\33 | ||
| 581. | | 581.82 | ||
| 7/5 | | 7/5 | ||
| [[Tritonic]] | | [[Tritonic]] (33) | ||
|- | |- | ||
| 3 | | 3 | ||
| | | 7\33<br>(4\33) | ||
| | | 254.55<br>(145.45) | ||
| | | 8/7<br>(12/11) | ||
| [[ | | [[Triforce]] (33d) | ||
|- | |- | ||
| 3 | | 3 | ||
| | | 13\33<br>(2\33) | ||
| | | 472.73<br>(72.73) | ||
| 3/ | | 4/3<br>(25/24) | ||
| [[ | | [[Inflated]] (33bcddd) | ||
|- | |- | ||
| 3 | | 3 | ||
| | | 14\33<br>(3\33) | ||
| | | 509.09<br>(98.09) | ||
| | | 4/3<br>(16/15) | ||
| [[ | | [[August]] (33cd) | ||
|} | |} | ||
<nowiki/>* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct | |||
== Scales == | == Scales == | ||
* {{main|List of MOS scales in {{ROOTPAGENAME}}}} | |||
Brightest mode is listed except where noted. | Brightest mode is listed except where noted. | ||
* Deeptone[7], 5 5 5 4 5 5 4 (diatonic) | * Deeptone[7], 5 5 5 4 5 5 4 (diatonic) | ||
** Fun 5-tone subset of Deeptone[7] 9 5 5 4 10 | |||
* Deeptone[12], 4 4 1 4 1 4 4 1 4 1 4 1 (chromatic) | * Deeptone[12], 4 4 1 4 1 4 4 1 4 1 4 1 (chromatic) | ||
* Deeptone[19], 3 1 3 1 1 3 1 1 3 1 3 1 1 3 1 1 3 1 1 (enharmonic) | * Deeptone[19], 3 1 3 1 1 3 1 1 3 1 3 1 1 3 1 1 3 1 1 (enharmonic) | ||
Line 398: | Line 499: | ||
* [[Diasem]], 5 3 5 1 5 3 5 1 5 (*right-handed) | * [[Diasem]], 5 3 5 1 5 3 5 1 5 (*right-handed) | ||
* Diasem, 5 1 5 3 5 1 5 3 5 (*left-handed) | * Diasem, 5 1 5 3 5 1 5 3 5 (*left-handed) | ||
* [[ | * [[Diaslen]] (4sR), 1 5 1 5 2 5 1 5 1 5 2 | ||
* | * Diaslen (4sL), 2 5 1 5 1 5 2 5 1 5 1 | ||
* | * Diaslen (4sC), 1 5 2 5 1 5 1 5 2 5 1 | ||
== Delta-rational harmony == | == Delta-rational harmony == | ||
The tables below show chords that approximate 3-integer-limit [[delta-rational]] chords with least-squares error less than 0. | The tables below show chords that approximate 3-integer-limit [[delta-rational]] chords with least-squares error less than 0.001. | ||
=== Fully delta-rational triads === | === Fully delta-rational triads === | ||
{| class=" | {| class="mw-collapsible mw-collapsed class="wikitable sortable" | ||
|- | |||
! Steps | ! Steps | ||
! Delta signature | ! Delta signature | ||
Line 412: | Line 514: | ||
|- | |- | ||
| 0,1,2 | | 0,1,2 | ||
| +1 +1 | | +1+1 | ||
| 0. | | 0.00021 | ||
|- | |- | ||
| 0,1,3 | | 0,1,3 | ||
| +1 +2 | | +1+2 | ||
| 0. | | 0.00048 | ||
|- | |- | ||
| 0,1,4 | | 0,1,4 | ||
| +1 +3 | | +1+3 | ||
| 0. | | 0.00078 | ||
|- | |- | ||
| 0,2,3 | | 0,2,3 | ||
| +2 +1 | | +2+1 | ||
| 0. | | 0.00039 | ||
|- | |- | ||
| 0,2,4 | | 0,2,4 | ||
| +1 +1 | | +1+1 | ||
| 0. | | 0.00087 | ||
|- | |- | ||
| 0,3,4 | | 0,3,4 | ||
| +3 +1 | | +3+1 | ||
| 0.00056 | | 0.00056 | ||
|- | |- | ||
| 0,3,11 | | 0,3,11 | ||
| +1 +3 | | +1+3 | ||
| 0. | | 0.00007 | ||
|- | |- | ||
| 0,5,8 | | 0,5,8 | ||
| +3 +2 | | +3+2 | ||
| 0. | | 0.00084 | ||
|- | |- | ||
| 0,8,18 | | 0,8,18 | ||
| +2 +3 | | +2+3 | ||
| 0. | | 0.00082 | ||
|- | |- | ||
| 0,9,20 | | 0,9,20 | ||
| +2 +3 | | +2+3 | ||
| 0. | | 0.00076 | ||
|- | |- | ||
| 0,12,17 | | 0,12,17 | ||
| +2 +1 | | +2+1 | ||
| 0. | | 0.00048 | ||
|- | |- | ||
| 0,13,20 | | 0,13,20 | ||
| +3 +2 | | +3+2 | ||
| 0. | | 0.00063 | ||
|- | |- | ||
| 0,15,21 | | 0,15,21 | ||
| +2 +1 | | +2+1 | ||
| 0. | | 0.00063 | ||
|- | |- | ||
| 0,16,28 | | 0,16,28 | ||
| +1 +1 | | +1+1 | ||
| 0. | | 0.00082 | ||
|- | |- | ||
| 0,18,25 | | 0,18,25 | ||
| +2 +1 | | +2+1 | ||
| 0. | | 0.00081 | ||
|- | |- | ||
| 0,18,31 | | 0,18,31 | ||
| +1 +1 | | +1+1 | ||
| 0. | | 0.00058 | ||
|- | |- | ||
| 0,19,24 | | 0,19,24 | ||
| +3 +1 | | +3+1 | ||
| 0. | | 0.00095 | ||
|} | |} | ||
=== Partially delta-rational tetrads === | === Partially delta-rational tetrads === | ||
{| class=" | {| class="mw-collapsible mw-collapsed class="wikitable sortable" | ||
|- | |||
! Steps | ! Steps | ||
! Delta signature | ! Delta signature | ||
Line 503: | Line 590: | ||
|- | |- | ||
| 0,1,2,3 | | 0,1,2,3 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00053 | | 0.00053 | ||
|- | |- | ||
| 0,1,2,4 | | 0,1,2,4 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00094 | | 0.00094 | ||
|- | |- | ||
| 0,1,3,4 | | 0,1,3,4 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00080 | | 0.00080 | ||
|- | |- | ||
| 0,1,17,18 | | 0,1,17,18 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00073 | | 0.00073 | ||
|- | |- | ||
| 0,1,17,19 | | 0,1,17,19 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00071 | | 0.00071 | ||
|- | |- | ||
| 0,1,18,19 | | 0,1,18,19 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00042 | | 0.00042 | ||
|- | |- | ||
| 0,1,18,20 | | 0,1,18,20 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00032 | | 0.00032 | ||
|- | |- | ||
| 0,1,19,20 | | 0,1,19,20 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00010 | | 0.00010 | ||
|- | |- | ||
| 0,1,19,21 | | 0,1,19,21 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00008 | | 0.00008 | ||
|- | |- | ||
| 0,1,20,21 | | 0,1,20,21 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00023 | | 0.00023 | ||
|- | |- | ||
| 0,1,20,22 | | 0,1,20,22 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00049 | | 0.00049 | ||
|- | |- | ||
| 0,1,21,22 | | 0,1,21,22 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00056 | | 0.00056 | ||
|- | |- | ||
| 0,1,21,23 | | 0,1,21,23 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,1,22,23 | | 0,1,22,23 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,1,31,32 | | 0,1,31,32 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00071 | | 0.00071 | ||
|- | |- | ||
| 0,2,3,4 | | 0,2,3,4 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00077 | | 0.00077 | ||
|- | |- | ||
| 0,2,6,11 | | 0,2,6,11 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00094 | | 0.00094 | ||
|- | |- | ||
| 0,2,7,12 | | 0,2,7,12 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00013 | | 0.00013 | ||
|- | |- | ||
| 0,2,8,13 | | 0,2,8,13 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00069 | | 0.00069 | ||
|- | |- | ||
| 0,2,12,13 | | 0,2,12,13 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00083 | | 0.00083 | ||
|- | |- | ||
| 0,2,12,15 | | 0,2,12,15 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,2,13,14 | | 0,2,13,14 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,2,13,16 | | 0,2,13,16 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00014 | | 0.00014 | ||
|- | |- | ||
| 0,2,14,15 | | 0,2,14,15 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00008 | | 0.00008 | ||
|- | |- | ||
| 0,2,14,17 | | 0,2,14,17 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00060 | | 0.00060 | ||
|- | |- | ||
| 0,2,15,16 | | 0,2,15,16 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00031 | | 0.00031 | ||
|- | |- | ||
| 0,2,16,17 | | 0,2,16,17 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00071 | | 0.00071 | ||
|- | |- | ||
| 0,2,18,20 | | 0,2,18,20 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00084 | | 0.00084 | ||
|- | |- | ||
| 0,2,18,22 | | 0,2,18,22 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00024 | | 0.00024 | ||
|- | |- | ||
| 0,2,19,21 | | 0,2,19,21 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00020 | | 0.00020 | ||
|- | |- | ||
| 0,2,19,23 | | 0,2,19,23 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00058 | | 0.00058 | ||
|- | |- | ||
| 0,2,20,22 | | 0,2,20,22 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00046 | | 0.00046 | ||
|- | |- | ||
| 0,3,4,5 | | 0,3,4,5 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00097 | | 0.00097 | ||
|- | |- | ||
| 0,3,5,9 | | 0,3,5,9 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00010 | | 0.00010 | ||
|- | |- | ||
| 0,3,6,10 | | 0,3,6,10 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,3,7,12 | | 0,3,7,12 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00074 | | 0.00074 | ||
|- | |- | ||
| 0,3,8,13 | | 0,3,8,13 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00037 | | 0.00037 | ||
|- | |- | ||
| 0,3,10,17 | | 0,3,10,17 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00009 | | 0.00009 | ||
|- | |- | ||
| 0,3,17,23 | | 0,3,17,23 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00096 | | 0.00096 | ||
|- | |- | ||
| 0,3,18,22 | | 0,3,18,22 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00088 | | 0.00088 | ||
|- | |- | ||
| 0,3,18,24 | | 0,3,18,24 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00027 | | 0.00027 | ||
|- | |- | ||
| 0,3,19,20 | | 0,3,19,20 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00059 | | 0.00059 | ||
|- | |- | ||
| 0,3,19,21 | | 0,3,19,21 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00063 | | 0.00063 | ||
|- | |- | ||
| 0,3,19,22 | | 0,3,19,22 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00030 | | 0.00030 | ||
|- | |- | ||
| 0,3,19,23 | | 0,3,19,23 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00023 | | 0.00023 | ||
|- | |- | ||
| 0,3,20,21 | | 0,3,20,21 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00014 | | 0.00014 | ||
|- | |- | ||
| 0,3,20,22 | | 0,3,20,22 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00015 | | 0.00015 | ||
|- | |- | ||
| 0,3,20,23 | | 0,3,20,23 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00070 | | 0.00070 | ||
|- | |- | ||
| 0,3,21,22 | | 0,3,21,22 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00032 | | 0.00032 | ||
|- | |- | ||
| 0,3,21,23 | | 0,3,21,23 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00095 | | 0.00095 | ||
|- | |- | ||
| 0,3,22,23 | | 0,3,22,23 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00078 | | 0.00078 | ||
|- | |- | ||
| 0,3,27,32 | | 0,3,27,32 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00004 | | 0.00004 | ||
|- | |- | ||
| 0,4,5,12 | | 0,4,5,12 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00026 | | 0.00026 | ||
|- | |- | ||
| 0,4,6,16 | | 0,4,6,16 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00066 | | 0.00066 | ||
|- | |- | ||
| 0,4,8,13 | | 0,4,8,13 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00023 | | 0.00023 | ||
|- | |- | ||
| 0,4,11,20 | | 0,4,11,20 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00023 | | 0.00023 | ||
|- | |- | ||
| 0,4,13,14 | | 0,4,13,14 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,4,13,19 | | 0,4,13,19 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00048 | | 0.00048 | ||
|- | |- | ||
| 0,4,14,15 | | 0,4,14,15 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00050 | | 0.00050 | ||
|- | |- | ||
| 0,4,14,16 | | 0,4,14,16 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00055 | | 0.00055 | ||
|- | |- | ||
| 0,4,14,17 | | 0,4,14,17 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00021 | | 0.00021 | ||
|- | |- | ||
| 0,4,15,16 | | 0,4,15,16 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00009 | | 0.00009 | ||
|- | |- | ||
| 0,4,15,17 | | 0,4,15,17 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00023 | | 0.00023 | ||
|- | |- | ||
| 0,4,15,18 | | 0,4,15,18 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00085 | | 0.00085 | ||
|- | |- | ||
| 0,4,16,17 | | 0,4,16,17 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00034 | | 0.00034 | ||
|- | |- | ||
| 0,4,17,18 | | 0,4,17,18 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00077 | | 0.00077 | ||
|- | |- | ||
| 0,4,17,25 | | 0,4,17,25 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00043 | | 0.00043 | ||
|- | |- | ||
| 0,4,19,23 | | 0,4,19,23 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00041 | | 0.00041 | ||
|- | |- | ||
| 0,4,20,24 | | 0,4,20,24 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00094 | | 0.00094 | ||
|- | |- | ||
| 0,4,22,27 | | 0,4,22,27 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00020 | | 0.00020 | ||
|- | |- | ||
| 0,4,24,31 | | 0,4,24,31 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00022 | | 0.00022 | ||
|- | |- | ||
| 0,5,6,9 | | 0,5,6,9 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00003 | | 0.00003 | ||
|- | |- | ||
| 0,5,7,10 | | 0,5,7,10 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00097 | | 0.00097 | ||
|- | |- | ||
| 0,5,7,19 | | 0,5,7,19 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00004 | | 0.00004 | ||
|- | |- | ||
| 0,5,9,17 | | 0,5,9,17 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00017 | | 0.00017 | ||
|- | |- | ||
| 0,5,10,16 | | 0,5,10,16 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00019 | | 0.00019 | ||
|- | |- | ||
| 0,5,11,13 | | 0,5,11,13 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,5,11,15 | | 0,5,11,15 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00018 | | 0.00018 | ||
|- | |- | ||
| 0,5,12,14 | | 0,5,12,14 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00011 | | 0.00011 | ||
|- | |- | ||
| 0,5,12,23 | | 0,5,12,23 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00067 | | 0.00067 | ||
|- | |- | ||
| 0,5,13,15 | | 0,5,13,15 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00067 | | 0.00067 | ||
|- | |- | ||
| 0,5,16,23 | | 0,5,16,23 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00008 | | 0.00008 | ||
|- | |- | ||
| 0,5,17,27 | | 0,5,17,27 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00055 | | 0.00055 | ||
|- | |- | ||
| 0,5,19,24 | | 0,5,19,24 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00051 | | 0.00051 | ||
|- | |- | ||
| 0,5,22,31 | | 0,5,22,31 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00057 | | 0.00057 | ||
|- | |- | ||
| 0,5,24,30 | | 0,5,24,30 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00036 | | 0.00036 | ||
|- | |- | ||
| 0,5,25,26 | | 0,5,25,26 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00071 | | 0.00071 | ||
|- | |- | ||
| 0,5,25,27 | | 0,5,25,27 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00082 | | 0.00082 | ||
|- | |- | ||
| 0,5,25,28 | | 0,5,25,28 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,5,26,27 | | 0,5,26,27 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00018 | | 0.00018 | ||
|- | |- | ||
| 0,5,26,28 | | 0,5,26,28 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00016 | | 0.00016 | ||
|- | |- | ||
| 0,5,26,29 | | 0,5,26,29 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,5,27,28 | | 0,5,27,28 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00035 | | 0.00035 | ||
|- | |- | ||
| 0,5,28,29 | | 0,5,28,29 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,6,7,17 | | 0,6,7,17 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,6,8,22 | | 0,6,8,22 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,6,9,14 | | 0,6,9,14 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00031 | | 0.00031 | ||
|- | |- | ||
| 0,6,11,18 | | 0,6,11,18 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00093 | | 0.00093 | ||
|- | |- | ||
| 0,6,12,21 | | 0,6,12,21 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00036 | | 0.00036 | ||
|- | |- | ||
| 0,6,12,25 | | 0,6,12,25 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00032 | | 0.00032 | ||
|- | |- | ||
| 0,6,15,18 | | 0,6,15,18 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00026 | | 0.00026 | ||
|- | |- | ||
| 0,6,16,19 | | 0,6,16,19 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00095 | | 0.00095 | ||
|- | |- | ||
| 0,6,16,28 | | 0,6,16,28 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00053 | | 0.00053 | ||
|- | |- | ||
| 0,6,18,26 | | 0,6,18,26 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00064 | | 0.00064 | ||
|- | |- | ||
| 0,6,19,25 | | 0,6,19,25 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00062 | | 0.00062 | ||
|- | |- | ||
| 0,6,20,24 | | 0,6,20,24 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00052 | | 0.00052 | ||
|- | |- | ||
| 0,6,21,23 | | 0,6,21,23 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00031 | | 0.00031 | ||
|- | |- | ||
| 0,6,21,32 | | 0,6,21,32 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00033 | | 0.00033 | ||
|- | |- | ||
| 0,6,22,24 | | 0,6,22,24 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00063 | | 0.00063 | ||
|- | |- | ||
| 0,6,25,32 | | 0,6,25,32 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00034 | | 0.00034 | ||
|- | |- | ||
| 0,7,8,14 | | 0,7,8,14 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00029 | | 0.00029 | ||
|- | |- | ||
| 0,7,8,24 | | 0,7,8,24 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00080 | | 0.00080 | ||
|- | |- | ||
| 0,7,9,11 | | 0,7,9,11 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00066 | | 0.00066 | ||
|- | |- | ||
| 0,7,9,12 | | 0,7,9,12 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00041 | | 0.00041 | ||
|- | |- | ||
| 0,7,9,13 | | 0,7,9,13 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00019 | | 0.00019 | ||
|- | |- | ||
| 0,7,10,12 | | 0,7,10,12 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00009 | | 0.00009 | ||
|- | |- | ||
| 0,7,10,13 | | 0,7,10,13 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00070 | | 0.00070 | ||
|- | |- | ||
| 0,7,11,13 | | 0,7,11,13 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,7,12,27 | | 0,7,12,27 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00041 | | 0.00041 | ||
|- | |- | ||
| 0,7,16,30 | | 0,7,16,30 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00098 | | 0.00098 | ||
|- | |- | ||
| 0,7,17,22 | | 0,7,17,22 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00008 | | 0.00008 | ||
|- | |- | ||
| 0,7,19,26 | | 0,7,19,26 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00073 | | 0.00073 | ||
|- | |- | ||
| 0,7,20,29 | | 0,7,20,29 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00002 | | 0.00002 | ||
|- | |- | ||
| 0,7,23,26 | | 0,7,23,26 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00010 | | 0.00010 | ||
|- | |- | ||
| 0,7,28,32 | | 0,7,28,32 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00033 | | 0.00033 | ||
|- | |- | ||
| 0,7,29,31 | | 0,7,29,31 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00020 | | 0.00020 | ||
|- | |- | ||
| 0,7,30,32 | | 0,7,30,32 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,8,12,29 | | 0,8,12,29 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00097 | | 0.00097 | ||
|- | |- | ||
| 0,8,13,22 | | 0,8,13,22 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00051 | | 0.00051 | ||
|- | |- | ||
| 0,8,15,21 | | 0,8,15,21 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00062 | | 0.00062 | ||
|- | |- | ||
| 0,8,15,31 | | 0,8,15,31 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00047 | | 0.00047 | ||
|- | |- | ||
| 0,8,16,18 | | 0,8,16,18 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00066 | | 0.00066 | ||
|- | |- | ||
| 0,8,16,19 | | 0,8,16,19 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00031 | | 0.00031 | ||
|- | |- | ||
| 0,8,16,20 | | 0,8,16,20 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00043 | | 0.00043 | ||
|- | |- | ||
| 0,8,16,27 | | 0,8,16,27 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,8,17,19 | | 0,8,17,19 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00022 | | 0.00022 | ||
|- | |- | ||
| 0,8,17,20 | | 0,8,17,20 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00098 | | 0.00098 | ||
|- | |- | ||
| 0,8,19,27 | | 0,8,19,27 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00085 | | 0.00085 | ||
|- | |- | ||
| 0,8,24,29 | | 0,8,24,29 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00020 | | 0.00020 | ||
|- | |- | ||
| 0,9,11,16 | | 0,9,11,16 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00051 | | 0.00051 | ||
|- | |- | ||
| 0,9,13,20 | | 0,9,13,20 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00002 | | 0.00002 | ||
|- | |- | ||
| 0,9,14,24 | | 0,9,14,24 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00073 | | 0.00073 | ||
|- | |- | ||
| 0,9,18,30 | | 0,9,18,30 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00090 | | 0.00090 | ||
|- | |- | ||
| 0,9,19,28 | | 0,9,19,28 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00096 | | 0.00096 | ||
|- | |- | ||
| 0,9,21,27 | | 0,9,21,27 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00040 | | 0.00040 | ||
|- | |- | ||
| 0,9,22,24 | | 0,9,22,24 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,9,22,25 | | 0,9,22,25 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00053 | | 0.00053 | ||
|- | |- | ||
| 0,9,22,26 | | 0,9,22,26 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00026 | | 0.00026 | ||
|- | |- | ||
| 0,9,23,25 | | 0,9,23,25 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00013 | | 0.00013 | ||
|- | |- | ||
| 0,9,23,26 | | 0,9,23,26 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00093 | | 0.00093 | ||
|- | |- | ||
| 0,10,11,26 | | 0,10,11,26 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00035 | | 0.00035 | ||
|- | |- | ||
| 0,10,11,32 | | 0,10,11,32 | ||
| +1 +? +3 | | +1+?+3 | ||
| 0.00081 | | 0.00081 | ||
|- | |- | ||
| 0,10,12,20 | | 0,10,12,20 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00098 | | 0.00098 | ||
|- | |- | ||
| 0,10,14,18 | | 0,10,14,18 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00050 | | 0.00050 | ||
|- | |- | ||
| 0,10,14,25 | | 0,10,14,25 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00088 | | 0.00088 | ||
|- | |- | ||
| 0,10,15,29 | | 0,10,15,29 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00041 | | 0.00041 | ||
|- | |- | ||
| 0,10,16,21 | | 0,10,16,21 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00055 | | 0.00055 | ||
|- | |- | ||
| 0,10,19,32 | | 0,10,19,32 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00021 | | 0.00021 | ||
|- | |- | ||
| 0,10,27,31 | | 0,10,27,31 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00082 | | 0.00082 | ||
|- | |- | ||
| 0,10,28,30 | | 0,10,28,30 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,10,28,31 | | 0,10,28,31 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00016 | | 0.00016 | ||
|- | |- | ||
| 0,10,29,31 | | 0,10,29,31 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00068 | | 0.00068 | ||
|- | |- | ||
| 0,11,12,18 | | 0,11,12,18 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00030 | | 0.00030 | ||
|- | |- | ||
| 0,11,13,16 | | 0,11,13,16 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00081 | | 0.00081 | ||
|- | |- | ||
| 0,11,14,17 | | 0,11,14,17 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00044 | | 0.00044 | ||
|- | |- | ||
| 0,11,16,31 | | 0,11,16,31 | ||
| +1 +? +2 | | +1+?+2 | ||
| 0.00064 | | 0.00064 | ||
|- | |- | ||
| 0,11,17,25 | | 0,11,17,25 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,11,19,23 | | 0,11,19,23 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,11,21,26 | | 0,11,21,26 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00074 | | 0.00074 | ||
|- | |- | ||
| 0,12,15,24 | | 0,12,15,24 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00087 | | 0.00087 | ||
|- | |- | ||
| 0,12,15,28 | | 0,12,15,28 | ||
| +2 +? +3 | | +2+?+3 | ||
| 0.00013 | | 0.00013 | ||
|- | |- | ||
| 0,12,17,23 | | 0,12,17,23 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00054 | | 0.00054 | ||
|- | |- | ||
| 0,12,18,21 | | 0,12,18,21 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00043 | | 0.00043 | ||
|- | |- | ||
| 0,12,19,22 | | 0,12,19,22 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00095 | | 0.00095 | ||
|- | |- | ||
| 0,12,23,27 | | 0,12,23,27 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00083 | | 0.00083 | ||
|- | |- | ||
| 0,12,26,31 | | 0,12,26,31 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00005 | | 0.00005 | ||
|- | |- | ||
| 0,13,14,24 | | 0,13,14,24 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00019 | | 0.00019 | ||
|- | |- | ||
| 0,13,17,22 | | 0,13,17,22 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00085 | | 0.00085 | ||
|- | |- | ||
| 0,13,21,27 | | 0,13,21,27 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00035 | | 0.00035 | ||
|- | |- | ||
| 0,13,22,25 | | 0,13,22,25 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00097 | | 0.00097 | ||
|- | |- | ||
| 0,13,23,26 | | 0,13,23,26 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00054 | | 0.00054 | ||
|- | |- | ||
| 0,13,28,32 | | 0,13,28,32 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00055 | | 0.00055 | ||
|- | |- | ||
| 0,14,17,24 | | 0,14,17,24 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00099 | | 0.00099 | ||
|- | |- | ||
| 0,14,18,28 | | 0,14,18,28 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00043 | | 0.00043 | ||
|- | |- | ||
| 0,14,21,26 | | 0,14,21,26 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00080 | | 0.00080 | ||
|- | |- | ||
| 0,14,25,31 | | 0,14,25,31 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00054 | | 0.00054 | ||
|- | |- | ||
| 0,14,27,30 | | 0,14,27,30 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00050 | | 0.00050 | ||
|- | |- | ||
| 0,15,16,20 | | 0,15,16,20 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00055 | | 0.00055 | ||
|- | |- | ||
| 0,15,17,28 | | 0,15,17,28 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00064 | | 0.00064 | ||
|- | |- | ||
| 0,15,21,28 | | 0,15,21,28 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00045 | | 0.00045 | ||
|- | |- | ||
| 0,15,22,32 | | 0,15,22,32 | ||
| +1 +? +1 | | +1+?+1 | ||
| 0.00039 | | 0.00039 | ||
|- | |- | ||
| 0,16,18,26 | | 0,16,18,26 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00049 | | 0.00049 | ||
|- | |- | ||
| 0,16,19,25 | | 0,16,19,25 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00031 | | 0.00031 | ||
|- | |- | ||
| 0,16,20,24 | | 0,16,20,24 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00018 | | 0.00018 | ||
|- | |- | ||
| 0,16,25,32 | | 0,16,25,32 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00095 | | 0.00095 | ||
|- | |- | ||
| 0,17,22,28 | | 0,17,22,28 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,17,23,27 | | 0,17,23,27 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00066 | | 0.00066 | ||
|- | |- | ||
| 0,18,27,31 | | 0,18,27,31 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00095 | | 0.00095 | ||
|- | |- | ||
| 0,19,21,28 | | 0,19,21,28 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00065 | | 0.00065 | ||
|- | |- | ||
| 0,20,24,31 | | 0,20,24,31 | ||
| +2 +? +1 | | +2+?+1 | ||
| 0.00078 | | 0.00078 | ||
|- | |- | ||
| 0,21,22,32 | | 0,21,22,32 | ||
| +3 +? +2 | | +3+?+2 | ||
| 0.00091 | | 0.00091 | ||
|- | |- | ||
| 0,22,27,32 | | 0,22,27,32 | ||
| +3 +? +1 | | +3+?+1 | ||
| 0.00038 | | 0.00038 | ||
|} | |} | ||
== Instruments == | |||
[[Lumatone mapping for 33edo]] | |||
== Music == | == Music == | ||
Line 1,396: | Line 1,410: | ||
; [[Bryan Deister]] | ; [[Bryan Deister]] | ||
* [https://www.youtube.com/watch?v=swyP6tB78k0 ''groove 33edo''] (2023) | * [https://www.youtube.com/watch?v=swyP6tB78k0 ''groove 33edo''] (2023) | ||
* [https://www.youtube.com/watch?v=GypR6x_Ih1I ''33edo jam''] (2025) | |||
* [https://www.youtube.com/shorts/mkaaAJEyGFU ''33edo riff''] (2025) | |||
; [[Peter Kosmorsky]] | ; [[Peter Kosmorsky]] | ||
Line 1,401: | Line 1,417: | ||
; [[Budjarn Lambeth]] | ; [[Budjarn Lambeth]] | ||
* [https://youtu.be/scCuGXnj5IY ''33EDO | * [https://youtu.be/scCuGXnj5IY ''Music in 33EDO (33-Tone Equal Temperament) – Feb 2024''] (2024) | ||
; [[Claudi Meneghin]] | ; [[Claudi Meneghin]] | ||
Line 1,419: | Line 1,435: | ||
[[Category:Listen]] | [[Category:Listen]] | ||
[[Category:Meantone]] | |||
[[Category:Subgroup temperaments]] | [[Category:Subgroup temperaments]] |
Latest revision as of 15:12, 2 August 2025
← 32edo | 33edo | 34edo → |
33 equal divisions of the octave (abbreviated 33edo or 33ed2), also called 33-tone equal temperament (33tet) or 33 equal temperament (33et) when viewed under a regular temperament perspective, is the tuning system that divides the octave into 33 equal parts of about 36.4 ¢ each. Each step represents a frequency ratio of 21/33, or the 33rd root of 2.
Theory
Structural properties
While relatively uncommon, 33edo is actually quite an interesting system. As a multiple of 11edo, it approximates the 7th and 11th harmonics via orgone temperament (see 26edo). 33edo also tunes the 13th harmonic slightly flat, allowing it to approximate the 21st and 17th harmonics as well, having a 3L 7s with L = 4, s = 3. The 33c (⟨33 52 76 93]) and 33cd (⟨33 52 76 92]) mappings temper out 81/80 and can be used to represent 1/2-comma meantone, a "flattertone" tuning where the whole tone is 10/9 in size. Indeed, the perfect fifth is tuned about 11 ¢ flat, and two stacked fifths fall only 0.6 ¢ flat of 10/9. Leaving the scale be would result in the standard diatonic scale (5L 2s) having minor seconds of four steps and whole tones of five steps. This also results in common practice minor and major chords becoming more supraminor and submajor in character, making everything sound almost neutral in quality.
Instead of the flat 19-step fifth you may use the 20-step sharp fifth, over 25 ¢ sharp. Two of these lead to a 9/8 of 7\33, which is about 22/19 in size and may be counted as a small third. Between the flat 5\33 version of 9/8 and the sharp 7\33 version there is, of course, a 6\33 = 2\11 interval of 218 ¢. Together, these add up to 6\33 + 5\33 = 11\33 = 1\3, or 400 ¢, the same major third as 12edo. We also have both a 327 ¢ minor third (9\33 = 6\22 = 3\11), the same as that of 22edo, and a flatter 8\33 third of 291 ¢, which if you like could also be called a flat 19th harmonic, but much more accurately a 13/11 sharp by 1.7 ¢ (if you use the patent val it is an extremely inaccurate 6/5). Another talent it has is that 7/5 is tuned quite accurately by 16\33, and we may put two 8\33 versions of 13/11 together to produce the cuthbert triad. The 8\33 generator, with MOS of size 5, 9, and 13, gives plenty of scope for these, as well as the 11th, 13th, and 19th harmonics (taking the generator as a 19/16) which are relatively well in tune.
33edo contains an accurate approximation of the Bohlen–Pierce scale with 4\33 near 1\13edt.
Other notable 33edo scales are diasem with L:m:s = 5:3:1 and 5L 4s with L:s = 5:2. This step ratio for 5L 4s is great for its semitone size of 72.7 ¢.
Odd harmonics
Harmonic | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | -11.0 | +13.7 | +13.0 | +14.3 | -5.9 | -4.2 | +2.6 | +4.1 | -6.6 | +1.9 | -10.1 |
Relative (%) | -30.4 | +37.6 | +35.7 | +39.2 | -16.1 | -11.5 | +7.3 | +11.4 | -18.2 | +5.4 | -27.8 | |
Steps (reduced) |
52 (19) |
77 (11) |
93 (27) |
105 (6) |
114 (15) |
122 (23) |
129 (30) |
135 (3) |
140 (8) |
145 (13) |
149 (17) |
33edo is not especially good at representing all rational intervals in the 7-limit, but it does very well on the 7-limit 3*33 subgroup 2.27.15.21.11.13. On this subgroup it tunes things to the same tuning as 99edo, and as a subgroup patent val it tempers out the same commas. The 99 equal temperaments hemififths, amity, parakleismic, hemiwuerschmidt, ennealimmal and hendecatonic can be reduced to this subgroup and give various possibilities for MOS scales, etc. In particular, the terrain 2.7/5.9/5 subgroup temperament can be tuned via the 5\33 generator. The full system of harmony provides the optimal patent val for slurpee temperament in the 5-, 7-, 11-, and 13-limits.
While it might not be the most harmonically accurate temperament, it is structurally quite interesting, and it approximates the full 19-limit consort in its own way. You could even say it tunes the 23rd and 29th harmonics ten cents flat if you were so inclined; as well as getting within two cents of the 37th.
Miscellany
33 is also the number of years in the Iranian calendar's leap cycle, where leap year is inserted once every 4 or 5 years. This corresponds to the 1L 7s with the step ratio of 5:4.
Intervals
Step # | ET | Just | Difference (ET minus Just) |
Extended Pythagorean notation | |||
---|---|---|---|---|---|---|---|
Cents | Interval | Cents | |||||
0 | 0 | 1/1 | 0 | 0 | Perfect Unison | P1 | D |
1 | 36.364 | 48/47 | 36.448 | −0.085 | Augmented Unison | A1 | D# |
2 | 72.727 | 24/23 | 73.681 | −0.953 | Double-aug 1sn | AA1 | Dx |
3 | 109.091 | 16/15 | 111.731 | −2.640 | Diminished 2nd | d2 | Ebb |
4 | 145.455 | 12/11 | 150.637 | −5.183 | Minor 2nd | m2 | Eb |
5 | 181.818 | 10/9 | 182.404 | −0.586 | Major 2nd | M2 | E |
6 | 218.182 | 17/15 | 216.687 | +1.495 | Augmented 2nd | A2 | E# |
7 | 254.545 | 15/13 | 247.741 | +6.804 | Double-aug 2nd/Double-dim 3rd | AA2/dd3 | Ex/Fbb |
8 | 290.909 | 13/11 | 289.210 | +1.699 | Diminished 3rd | d3 | Fb |
9 | 327.273 | 6/5 | 315.641 | +11.631 | Minor 3rd | m3 | F |
10 | 363.636 | 16/13 | 359.472 | +4.164 | Major 3rd | M3 | F# |
11 | 400.000 | 5/4 | 386.314 | +13.686 | Augmented 3rd | A3 | Fx |
12 | 436.364 | 9/7 | 435.084 | +1.280 | Double-dim 4th | dd4 | Gbb |
13 | 472.727 | 21/16 | 470.781 | +1.946 | Diminished 4th | d4 | Gb |
14 | 509.091 | 4/3 | 498.045 | +11.046 | Perfect 4th | P4 | G |
15 | 545.455 | 11/8 | 551.318 | −5.863 | Augmented 4th | A4 | G# |
16 | 581.818 | 7/5 | 582.513 | −0.694 | Double-aug 4th | AA4 | Gx |
17 | 618.182 | 10/7 | 617.488 | +0.694 | Double-dim 5th | dd5 | Abb |
18 | 654.545 | 16/11 | 648.682 | +5.863 | Diminished 5th | d5 | Ab |
19 | 690.909 | 3/2 | 701.955 | −11.046 | Perfect 5th | P5 | A |
20 | 727.273 | 32/21 | 729.219 | -1.946 | Augmented 5th | A5 | A# |
21 | 763.636 | 14/9 | 764.916 | −1.280 | Double-aug 5th | AA5 | Ax |
22 | 800.000 | 8/5 | 813.686 | −13.686 | Double-dim 6th | d6 | Bbb |
23 | 836.364 | 13/8 | 840.528 | −4.164 | Minor 6th | m6 | Bb |
24 | 872.727 | 5/3 | 884.359 | −11.631 | Major 6th | M6 | B |
25 | 909.091 | 22/13 | 910.790 | −1.699 | Augmented 6th | A6 | B# |
26 | 945.455 | 12/7 | 933.129 | +12.325 | Double-aug 6th/Double-dim 7th | AA6/dd7 | Bx/Cbb |
27 | 981.818 | 30/17 | 983.313 | −1.495 | Diminished 7th | d7 | Cb |
28 | 1018.182 | 9/5 | 1017.596 | +0.586 | Minor 7th | m7 | C |
29 | 1054.545 | 11/6 | 1049.363 | +5.183 | Major 7th | M7 | C# |
30 | 1090.909 | 15/8 | 1088.268 | +2.640 | Augmented 7th | A7 | Cx |
31 | 1127.273 | 23/12 | 1126.319 | −0.953 | Double-dim 8ve | dd8 | Dbb |
32 | 1163.636 | 47/24 | 1163.551 | +0.085 | Diminished 8ve | d8 | Db |
33 | 1200 | 2/1 | 1200 | 0 | Perfect Octave | P8 | D |
Notation
Standard notation
Because the chromatic semitone in 33edo is 1 step, 33edo can be notated using only naturals, sharps, and flats. However, many key signatures will require double- and triple-sharps and flats, which means that notation in distant keys can be very unwieldy.
Step offset | −2 | −1 | 0 | +1 | +2 |
---|---|---|---|---|---|
Symbol | ![]() |
![]() |
![]() |
![]() |
![]() |
Sagittal notation
This notation uses the same sagittal sequence as EDOs 23 and 28.

Approximation to JI
The following tables show how 15-odd-limit intervals are represented in 33edo. Prime harmonics are in bold; inconsistent intervals are in italics.
Interval and complement | Error (abs, ¢) | Error (rel, %) |
---|---|---|
1/1, 2/1 | 0.000 | 0.0 |
9/5, 10/9 | 0.586 | 1.6 |
7/5, 10/7 | 0.694 | 1.9 |
9/7, 14/9 | 1.280 | 3.5 |
13/11, 22/13 | 1.699 | 4.7 |
15/8, 16/15 | 2.640 | 7.3 |
13/8, 16/13 | 4.164 | 11.5 |
11/6, 12/11 | 5.183 | 14.3 |
11/8, 16/11 | 5.863 | 16.1 |
15/13, 26/15 | 6.804 | 18.7 |
13/12, 24/13 | 6.882 | 18.9 |
15/11, 22/15 | 8.504 | 23.4 |
15/14, 28/15 | 10.352 | 28.5 |
3/2, 4/3 | 11.046 | 30.4 |
5/3, 6/5 | 11.631 | 32.0 |
7/6, 12/7 | 12.325 | 33.9 |
7/4, 8/7 | 12.992 | 35.7 |
5/4, 8/5 | 13.686 | 37.6 |
9/8, 16/9 | 14.272 | 39.2 |
11/9, 18/11 | 16.228 | 44.6 |
11/10, 20/11 | 16.814 | 46.2 |
13/7, 14/13 | 17.156 | 47.2 |
11/7, 14/11 | 17.508 | 48.1 |
13/10, 20/13 | 17.850 | 49.1 |
13/9, 18/13 | 17.928 | 49.3 |
Interval and complement | Error (abs, ¢) | Error (rel, %) |
---|---|---|
1/1, 2/1 | 0.000 | 0.0 |
7/5, 10/7 | 0.694 | 1.9 |
13/11, 22/13 | 1.699 | 4.7 |
15/8, 16/15 | 2.640 | 7.3 |
13/8, 16/13 | 4.164 | 11.5 |
11/6, 12/11 | 5.183 | 14.3 |
11/8, 16/11 | 5.863 | 16.1 |
15/13, 26/15 | 6.804 | 18.7 |
13/12, 24/13 | 6.882 | 18.9 |
15/11, 22/15 | 8.504 | 23.4 |
15/14, 28/15 | 10.352 | 28.5 |
3/2, 4/3 | 11.046 | 30.4 |
7/4, 8/7 | 12.992 | 35.7 |
5/4, 8/5 | 13.686 | 37.6 |
11/9, 18/11 | 16.228 | 44.6 |
13/7, 14/13 | 17.156 | 47.2 |
13/10, 20/13 | 17.850 | 49.1 |
13/9, 18/13 | 17.928 | 49.3 |
11/7, 14/11 | 18.856 | 51.9 |
11/10, 20/11 | 19.550 | 53.8 |
9/8, 16/9 | 22.092 | 60.8 |
7/6, 12/7 | 24.038 | 66.1 |
5/3, 6/5 | 24.732 | 68.0 |
9/7, 14/9 | 35.084 | 96.5 |
9/5, 10/9 | 35.778 | 98.4 |
Interval and complement | Error (abs, ¢) | Error (rel, %) |
---|---|---|
1/1, 2/1 | 0.000 | 0.0 |
9/5, 10/9 | 0.586 | 1.6 |
7/5, 10/7 | 0.694 | 1.9 |
9/7, 14/9 | 1.280 | 3.5 |
13/11, 22/13 | 1.699 | 4.7 |
13/8, 16/13 | 4.164 | 11.5 |
11/6, 12/11 | 5.183 | 14.3 |
11/8, 16/11 | 5.863 | 16.1 |
13/12, 24/13 | 6.882 | 18.9 |
15/14, 28/15 | 10.352 | 28.5 |
3/2, 4/3 | 11.046 | 30.4 |
5/3, 6/5 | 11.631 | 32.0 |
7/6, 12/7 | 12.325 | 33.9 |
11/9, 18/11 | 16.228 | 44.6 |
11/10, 20/11 | 16.814 | 46.2 |
11/7, 14/11 | 17.508 | 48.1 |
13/9, 18/13 | 17.928 | 49.3 |
13/10, 20/13 | 18.513 | 50.9 |
13/7, 14/13 | 19.207 | 52.8 |
9/8, 16/9 | 22.092 | 60.8 |
5/4, 8/5 | 22.677 | 62.4 |
7/4, 8/7 | 23.371 | 64.3 |
15/11, 22/15 | 27.860 | 76.6 |
15/13, 26/15 | 29.559 | 81.3 |
15/8, 16/15 | 33.723 | 92.7 |
Nearby equal temperaments
Regular temperament properties
Subgroup | Comma list | Mapping | Optimal 8ve stretch (¢) |
Tuning error | |
---|---|---|---|---|---|
Absolute (¢) | Relative (%) | ||||
2.3 | [-52 33⟩ | [⟨33 52]] | +3.48 | 3.49 | 9.59 |
2.3.5 | 81/80, 1171875/1048576 | [⟨33 52 76]] (33c) | +5.59 | 4.13 | 11.29 |
2.3.5.7 | 49/48, 81/80, 1875/1792 | [⟨33 52 76 92]] (33cd) | +6.29 | 3.77 | 10.31 |
2.3.5.7.11 | 45/44, 49/48, 81/80, 1375/1344 | [⟨33 52 76 92 114]] (33cd) | +5.36 | 3.84 | 10.50 |
2.3.5.7.11.13 | 45/44, 49/48, 65/64, 81/80, 275/273 | [⟨33 52 76 92 114 122]] (33cd) | +4.65 | 3.84 | 10.52 |
Rank-2 temperaments
Periods per 8ve |
Generator* | Cents* | Associated ratio* |
Temperaments |
---|---|---|---|---|
1 | 2\33 | 72.73 | 21/20 | Slurpee (33) |
1 | 4\33 | 145.45 | 12/11 | Bohpier (33cd) |
1 | 7\33 | 254.55 | 8/7 | Godzilla (33cd) |
1 | 8\33 | 290.91 | 25/21 | Quasitemp (33b) |
1 | 10\33 | 363.64 | 49/40 | Submajor (33ee) / interpental (33e) |
1 | 14\33 | 509.09 | 4/3 | Flattertone (33cd) Deeptone a.k.a. tragicomical (33) |
1 | 16\33 | 581.82 | 7/5 | Tritonic (33) |
3 | 7\33 (4\33) |
254.55 (145.45) |
8/7 (12/11) |
Triforce (33d) |
3 | 13\33 (2\33) |
472.73 (72.73) |
4/3 (25/24) |
Inflated (33bcddd) |
3 | 14\33 (3\33) |
509.09 (98.09) |
4/3 (16/15) |
August (33cd) |
* Octave-reduced form, reduced to the first half-octave, and minimal form in parentheses if distinct
Scales
Brightest mode is listed except where noted.
- Deeptone[7], 5 5 5 4 5 5 4 (diatonic)
- Fun 5-tone subset of Deeptone[7] 9 5 5 4 10
- Deeptone[12], 4 4 1 4 1 4 4 1 4 1 4 1 (chromatic)
- Deeptone[19], 3 1 3 1 1 3 1 1 3 1 3 1 1 3 1 1 3 1 1 (enharmonic)
- Semiquartal, 5 5 2 5 2 5 2 5 2
- Semiquartal[14], 3 2 3 2 2 3 2 2 3 2 2
- Iranian Calendar, 5 4 4 4 4 4 4 4
- Diasem, 5 3 5 1 5 3 5 1 5 (*right-handed)
- Diasem, 5 1 5 3 5 1 5 3 5 (*left-handed)
- Diaslen (4sR), 1 5 1 5 2 5 1 5 1 5 2
- Diaslen (4sL), 2 5 1 5 1 5 2 5 1 5 1
- Diaslen (4sC), 1 5 2 5 1 5 1 5 2 5 1
Delta-rational harmony
The tables below show chords that approximate 3-integer-limit delta-rational chords with least-squares error less than 0.001.
Fully delta-rational triads
Steps | Delta signature | Least-squares error |
---|---|---|
0,1,2 | +1+1 | 0.00021 |
0,1,3 | +1+2 | 0.00048 |
0,1,4 | +1+3 | 0.00078 |
0,2,3 | +2+1 | 0.00039 |
0,2,4 | +1+1 | 0.00087 |
0,3,4 | +3+1 | 0.00056 |
0,3,11 | +1+3 | 0.00007 |
0,5,8 | +3+2 | 0.00084 |
0,8,18 | +2+3 | 0.00082 |
0,9,20 | +2+3 | 0.00076 |
0,12,17 | +2+1 | 0.00048 |
0,13,20 | +3+2 | 0.00063 |
0,15,21 | +2+1 | 0.00063 |
0,16,28 | +1+1 | 0.00082 |
0,18,25 | +2+1 | 0.00081 |
0,18,31 | +1+1 | 0.00058 |
0,19,24 | +3+1 | 0.00095 |
Partially delta-rational tetrads
Steps | Delta signature | Least-squares error |
---|---|---|
0,1,2,3 | +1+?+1 | 0.00053 |
0,1,2,4 | +1+?+2 | 0.00094 |
0,1,3,4 | +1+?+1 | 0.00080 |
0,1,17,18 | +2+?+3 | 0.00073 |
0,1,17,19 | +1+?+3 | 0.00071 |
0,1,18,19 | +2+?+3 | 0.00042 |
0,1,18,20 | +1+?+3 | 0.00032 |
0,1,19,20 | +2+?+3 | 0.00010 |
0,1,19,21 | +1+?+3 | 0.00008 |
0,1,20,21 | +2+?+3 | 0.00023 |
0,1,20,22 | +1+?+3 | 0.00049 |
0,1,21,22 | +2+?+3 | 0.00056 |
0,1,21,23 | +1+?+3 | 0.00091 |
0,1,22,23 | +2+?+3 | 0.00090 |
0,1,31,32 | +1+?+2 | 0.00071 |
0,2,3,4 | +2+?+1 | 0.00077 |
0,2,6,11 | +1+?+3 | 0.00094 |
0,2,7,12 | +1+?+3 | 0.00013 |
0,2,8,13 | +1+?+3 | 0.00069 |
0,2,12,13 | +3+?+2 | 0.00083 |
0,2,12,15 | +1+?+2 | 0.00087 |
0,2,13,14 | +3+?+2 | 0.00045 |
0,2,13,16 | +1+?+2 | 0.00014 |
0,2,14,15 | +3+?+2 | 0.00008 |
0,2,14,17 | +1+?+2 | 0.00060 |
0,2,15,16 | +3+?+2 | 0.00031 |
0,2,16,17 | +3+?+2 | 0.00071 |
0,2,18,20 | +2+?+3 | 0.00084 |
0,2,18,22 | +1+?+3 | 0.00024 |
0,2,19,21 | +2+?+3 | 0.00020 |
0,2,19,23 | +1+?+3 | 0.00058 |
0,2,20,22 | +2+?+3 | 0.00046 |
0,3,4,5 | +3+?+1 | 0.00097 |
0,3,5,9 | +2+?+3 | 0.00010 |
0,3,6,10 | +2+?+3 | 0.00090 |
0,3,7,12 | +1+?+2 | 0.00074 |
0,3,8,13 | +1+?+2 | 0.00037 |
0,3,10,17 | +1+?+3 | 0.00009 |
0,3,17,23 | +1+?+3 | 0.00096 |
0,3,18,22 | +1+?+2 | 0.00088 |
0,3,18,24 | +1+?+3 | 0.00027 |
0,3,19,20 | +2+?+1 | 0.00059 |
0,3,19,21 | +1+?+1 | 0.00063 |
0,3,19,22 | +2+?+3 | 0.00030 |
0,3,19,23 | +1+?+2 | 0.00023 |
0,3,20,21 | +2+?+1 | 0.00014 |
0,3,20,22 | +1+?+1 | 0.00015 |
0,3,20,23 | +2+?+3 | 0.00070 |
0,3,21,22 | +2+?+1 | 0.00032 |
0,3,21,23 | +1+?+1 | 0.00095 |
0,3,22,23 | +2+?+1 | 0.00078 |
0,3,27,32 | +1+?+3 | 0.00004 |
0,4,5,12 | +1+?+2 | 0.00026 |
0,4,6,16 | +1+?+3 | 0.00066 |
0,4,8,13 | +2+?+3 | 0.00023 |
0,4,11,20 | +1+?+3 | 0.00023 |
0,4,13,14 | +3+?+1 | 0.00091 |
0,4,13,19 | +1+?+2 | 0.00048 |
0,4,14,15 | +3+?+1 | 0.00050 |
0,4,14,16 | +3+?+2 | 0.00055 |
0,4,14,17 | +1+?+1 | 0.00021 |
0,4,15,16 | +3+?+1 | 0.00009 |
0,4,15,17 | +3+?+2 | 0.00023 |
0,4,15,18 | +1+?+1 | 0.00085 |
0,4,16,17 | +3+?+1 | 0.00034 |
0,4,17,18 | +3+?+1 | 0.00077 |
0,4,17,25 | +1+?+3 | 0.00043 |
0,4,19,23 | +2+?+3 | 0.00041 |
0,4,20,24 | +2+?+3 | 0.00094 |
0,4,22,27 | +1+?+2 | 0.00020 |
0,4,24,31 | +1+?+3 | 0.00022 |
0,5,6,9 | +3+?+2 | 0.00003 |
0,5,7,10 | +3+?+2 | 0.00097 |
0,5,7,19 | +1+?+3 | 0.00004 |
0,5,9,17 | +1+?+2 | 0.00017 |
0,5,10,16 | +2+?+3 | 0.00019 |
0,5,11,13 | +2+?+1 | 0.00087 |
0,5,11,15 | +1+?+1 | 0.00018 |
0,5,12,14 | +2+?+1 | 0.00011 |
0,5,12,23 | +1+?+3 | 0.00067 |
0,5,13,15 | +2+?+1 | 0.00067 |
0,5,16,23 | +1+?+2 | 0.00008 |
0,5,17,27 | +1+?+3 | 0.00055 |
0,5,19,24 | +2+?+3 | 0.00051 |
0,5,22,31 | +1+?+3 | 0.00057 |
0,5,24,30 | +1+?+2 | 0.00036 |
0,5,25,26 | +3+?+1 | 0.00071 |
0,5,25,27 | +3+?+2 | 0.00082 |
0,5,25,28 | +1+?+1 | 0.00045 |
0,5,26,27 | +3+?+1 | 0.00018 |
0,5,26,28 | +3+?+2 | 0.00016 |
0,5,26,29 | +1+?+1 | 0.00090 |
0,5,27,28 | +3+?+1 | 0.00035 |
0,5,28,29 | +3+?+1 | 0.00090 |
0,6,7,17 | +1+?+2 | 0.00087 |
0,6,8,22 | +1+?+3 | 0.00045 |
0,6,9,14 | +1+?+1 | 0.00031 |
0,6,11,18 | +2+?+3 | 0.00093 |
0,6,12,21 | +1+?+2 | 0.00036 |
0,6,12,25 | +1+?+3 | 0.00032 |
0,6,15,18 | +3+?+2 | 0.00026 |
0,6,16,19 | +3+?+2 | 0.00095 |
0,6,16,28 | +1+?+3 | 0.00053 |
0,6,18,26 | +1+?+2 | 0.00064 |
0,6,19,25 | +2+?+3 | 0.00062 |
0,6,20,24 | +1+?+1 | 0.00052 |
0,6,21,23 | +2+?+1 | 0.00031 |
0,6,21,32 | +1+?+3 | 0.00033 |
0,6,22,24 | +2+?+1 | 0.00063 |
0,6,25,32 | +1+?+2 | 0.00034 |
0,7,8,14 | +1+?+1 | 0.00029 |
0,7,8,24 | +1+?+3 | 0.00080 |
0,7,9,11 | +3+?+1 | 0.00066 |
0,7,9,12 | +2+?+1 | 0.00041 |
0,7,9,13 | +3+?+2 | 0.00019 |
0,7,10,12 | +3+?+1 | 0.00009 |
0,7,10,13 | +2+?+1 | 0.00070 |
0,7,11,13 | +3+?+1 | 0.00087 |
0,7,12,27 | +1+?+3 | 0.00041 |
0,7,16,30 | +1+?+3 | 0.00098 |
0,7,17,22 | +1+?+1 | 0.00008 |
0,7,19,26 | +2+?+3 | 0.00073 |
0,7,20,29 | +1+?+2 | 0.00002 |
0,7,23,26 | +3+?+2 | 0.00010 |
0,7,28,32 | +1+?+1 | 0.00033 |
0,7,29,31 | +2+?+1 | 0.00020 |
0,7,30,32 | +2+?+1 | 0.00091 |
0,8,12,29 | +1+?+3 | 0.00097 |
0,8,13,22 | +2+?+3 | 0.00051 |
0,8,15,21 | +1+?+1 | 0.00062 |
0,8,15,31 | +1+?+3 | 0.00047 |
0,8,16,18 | +3+?+1 | 0.00066 |
0,8,16,19 | +2+?+1 | 0.00031 |
0,8,16,20 | +3+?+2 | 0.00043 |
0,8,16,27 | +1+?+2 | 0.00090 |
0,8,17,19 | +3+?+1 | 0.00022 |
0,8,17,20 | +2+?+1 | 0.00098 |
0,8,19,27 | +2+?+3 | 0.00085 |
0,8,24,29 | +1+?+1 | 0.00020 |
0,9,11,16 | +3+?+2 | 0.00051 |
0,9,13,20 | +1+?+1 | 0.00002 |
0,9,14,24 | +2+?+3 | 0.00073 |
0,9,18,30 | +1+?+2 | 0.00090 |
0,9,19,28 | +2+?+3 | 0.00096 |
0,9,21,27 | +1+?+1 | 0.00040 |
0,9,22,24 | +3+?+1 | 0.00087 |
0,9,22,25 | +2+?+1 | 0.00053 |
0,9,22,26 | +3+?+2 | 0.00026 |
0,9,23,25 | +3+?+1 | 0.00013 |
0,9,23,26 | +2+?+1 | 0.00093 |
0,10,11,26 | +1+?+2 | 0.00035 |
0,10,11,32 | +1+?+3 | 0.00081 |
0,10,12,20 | +1+?+1 | 0.00098 |
0,10,14,18 | +2+?+1 | 0.00050 |
0,10,14,25 | +2+?+3 | 0.00088 |
0,10,15,29 | +1+?+2 | 0.00041 |
0,10,16,21 | +3+?+2 | 0.00055 |
0,10,19,32 | +1+?+2 | 0.00021 |
0,10,27,31 | +3+?+2 | 0.00082 |
0,10,28,30 | +3+?+1 | 0.00045 |
0,10,28,31 | +2+?+1 | 0.00016 |
0,10,29,31 | +3+?+1 | 0.00068 |
0,11,12,18 | +3+?+2 | 0.00030 |
0,11,13,16 | +3+?+1 | 0.00081 |
0,11,14,17 | +3+?+1 | 0.00044 |
0,11,16,31 | +1+?+2 | 0.00064 |
0,11,17,25 | +1+?+1 | 0.00091 |
0,11,19,23 | +2+?+1 | 0.00045 |
0,11,21,26 | +3+?+2 | 0.00074 |
0,12,15,24 | +1+?+1 | 0.00087 |
0,12,15,28 | +2+?+3 | 0.00013 |
0,12,17,23 | +3+?+2 | 0.00054 |
0,12,18,21 | +3+?+1 | 0.00043 |
0,12,19,22 | +3+?+1 | 0.00095 |
0,12,23,27 | +2+?+1 | 0.00083 |
0,12,26,31 | +3+?+2 | 0.00005 |
0,13,14,24 | +1+?+1 | 0.00019 |
0,13,17,22 | +2+?+1 | 0.00085 |
0,13,21,27 | +3+?+2 | 0.00035 |
0,13,22,25 | +3+?+1 | 0.00097 |
0,13,23,26 | +3+?+1 | 0.00054 |
0,13,28,32 | +2+?+1 | 0.00055 |
0,14,17,24 | +3+?+2 | 0.00099 |
0,14,18,28 | +1+?+1 | 0.00043 |
0,14,21,26 | +2+?+1 | 0.00080 |
0,14,25,31 | +3+?+2 | 0.00054 |
0,14,27,30 | +3+?+1 | 0.00050 |
0,15,16,20 | +3+?+1 | 0.00055 |
0,15,17,28 | +1+?+1 | 0.00064 |
0,15,21,28 | +3+?+2 | 0.00045 |
0,15,22,32 | +1+?+1 | 0.00039 |
0,16,18,26 | +3+?+2 | 0.00049 |
0,16,19,25 | +2+?+1 | 0.00031 |
0,16,20,24 | +3+?+1 | 0.00018 |
0,16,25,32 | +3+?+2 | 0.00095 |
0,17,22,28 | +2+?+1 | 0.00091 |
0,17,23,27 | +3+?+1 | 0.00066 |
0,18,27,31 | +3+?+1 | 0.00095 |
0,19,21,28 | +2+?+1 | 0.00065 |
0,20,24,31 | +2+?+1 | 0.00078 |
0,21,22,32 | +3+?+2 | 0.00091 |
0,22,27,32 | +3+?+1 | 0.00038 |
Instruments
Music
Modern renderings
- "Contrapunctus 4" from The Art of Fugue, BWV 1080 (1742–1749) – rendered by Claudi Meneghin (2024)
- "Contrapunctus 11" from The Art of Fugue, BWV 1080 (1742–1749) – rendered by Claudi Meneghin (2024)
21st century
- groove 33edo (2023)
- 33edo jam (2025)
- 33edo riff (2025)
- Rising Canon on a Ground, for Baroque Oboe, Bassoon, Violone (2024) – (for Organ)
- Lytel Twyelyghte Musicke (Little Twilight Music), for Brass and Timpani (2024)
- Mysteries of Thirty-Three (2024)