User:Overthink/The 7-limit in 53edo: Difference between revisions
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In 53edo, the [[7-limit]] is well-approximated, and especially the 5- and 3-limits. On this page, we will analyze the approximations and structures of 53edo in the 7-limit. | In 53edo, the [[7-limit]] is well-approximated, and especially the 5- and 3-limits. On this page, we will analyze the approximations and structures of 53edo in the 7-limit. | ||
{| class=" | {| class="mw-collapsible wikitable" | ||
|+ Intervals of 53edo | |+ style="font-size: 105%; white-space: nowrap;" | Intervals of 53edo | ||
|- | |||
! Steps | ! Steps | ||
! Cents | ! Cents | ||
| Line 12: | Line 14: | ||
| 1 | | 1 | ||
| 22.642 | | 22.642 | ||
| | | 531441/524288, 81/80, 64/63, 50/49 | ||
|- | |- | ||
| 2 | | 2 | ||
| 45.283 | | 45.283 | ||
| | | 36/35, 49/48, 128/125, 250/243 | ||
|- | |- | ||
| 3 | | 3 | ||
| 67.925 | | 67.925 | ||
| | | 28/27, 25/24 | ||
|- | |- | ||
| 4 | | 4 | ||
| 90.566 | | 90.566 | ||
| | | 256/243, 135/128, 21/20 | ||
|- | |- | ||
| 5 | | 5 | ||
| 113.208 | | 113.208 | ||
| | | 16/15, 15/14, 2187/2048 | ||
|- | |- | ||
| 6 | | 6 | ||
| 135.849 | | 135.849 | ||
| | | 27/25 | ||
|- | |- | ||
| 7 | | 7 | ||
| 158.491 | | 158.491 | ||
| | | 35/32 | ||
|- | |- | ||
| 8 | | 8 | ||
| 181.132 | | 181.132 | ||
| | | 10/9 | ||
|- | |- | ||
| 9 | | 9 | ||
| 203.774 | | 203.774 | ||
| | | 9/8 | ||
|- | |- | ||
| 10 | | 10 | ||
| 226.415 | | 226.415 | ||
| | | 8/7 | ||
|- | |- | ||
| 11 | | 11 | ||
| 249.057 | | 249.057 | ||
| | | 81/70, 125/108, 144/125, 147/128 | ||
|- | |- | ||
| 12 | | 12 | ||
| 271.698 | | 271.698 | ||
| | | 7/6, 75/64 | ||
|- | |- | ||
| 13 | | 13 | ||
| 294.340 | | 294.340 | ||
| | | 32/27 | ||
|- | |- | ||
| 14 | | 14 | ||
| 316.981 | | 316.981 | ||
| | | 6/5 | ||
|- | |- | ||
| 15 | | 15 | ||
| 339.623 | | 339.623 | ||
| | | 105/64, 243/200 | ||
|- | |- | ||
| 16 | | 16 | ||
| 362.264 | | 362.264 | ||
| | | 100/81, 315/256 | ||
|- | |- | ||
| 17 | | 17 | ||
| 384.906 | | 384.906 | ||
| | | 5/4 | ||
|- | |- | ||
| 18 | | 18 | ||
| 407.547 | | 407.547 | ||
| | | 81/64 | ||
|- | |- | ||
| 19 | | 19 | ||
| 430.189 | | 430.189 | ||
| | | 9/7, 32/25 | ||
|- | |- | ||
| 20 | | 20 | ||
| 452.830 | | 452.830 | ||
| | | 64/49, 35/27 | ||
|- | |- | ||
| 21 | | 21 | ||
| 475.472 | | 475.472 | ||
| | | 21/16 | ||
|- | |- | ||
| 22 | | 22 | ||
| Line 100: | Line 102: | ||
| 23 | | 23 | ||
| 520.755 | | 520.755 | ||
| | | 27/20 | ||
|- | |- | ||
| 24 | | 24 | ||
| 543.396 | | 543.396 | ||
| | | 48/35 | ||
|- | |- | ||
| 25 | | 25 | ||
| Line 112: | Line 114: | ||
| 26 | | 26 | ||
| 588.679 | | 588.679 | ||
| | | 1024/729, 7/5, 45/32 | ||
|- | |- | ||
| 27 | | 27 | ||
| 611.321 | | 611.321 | ||
| | | 729/512, 10/7, 64/45 | ||
|- | |- | ||
| 28 | | 28 | ||
| Line 221: | Line 223: | ||
| 1200.000 | | 1200.000 | ||
| 2/1 | | 2/1 | ||
|} | |||
The [[81/80]] and [[64/63]] commas translate pythagorean intervals into nearby pental and septimal intervals respectively. Considering them seperately is too complex, so we conflate them into one comma step, tempering out [[5120/5103]]. Here's a table of intervals organized using tempering of 5120/5103. Each interval is a fifth above the interval to the left of it, and a comma above the interval below it. Not all ratios are shown, or else the table will be too complex. | |||
{| class="wikitable" | |||
|+Interval table (far fourthward) | |||
| | |||
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|- | |||
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|- | |||
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|} | |||
{| class="wikitable" | |||
|+Hemifamity interval table (middle) | |||
| | |||
|256/175 | |||
| | |||
| | |||
| | |||
| | |||
| | |||
|256/245, | |||
729/700 | |||
|384/245 | |||
| | |||
| | |||
| | |||
| | |||
|512/343 | |||
| | |||
|- | |||
|48/25 | |||
|36/25 | |||
|27/25 | |||
|81/50 | |||
|128/105, | |||
243/200 | |||
|64/35 | |||
|48/35 | |||
|36/35 | |||
|54/35 | |||
|81/70, | |||
|243/140, | |||
256/147 | |||
|64/49 | |||
|96/49 | |||
|72/49 | |||
|54/49 | |||
|- | |||
|135/128 | |||
|64/45 | |||
|16/15 | |||
|8/5 | |||
|6/5 | |||
|9/5 | |||
|27/20 | |||
|64/63, | |||
81/80 | |||
|32/21 | |||
|8/7 | |||
|12/7 | |||
|9/7 | |||
|27/14 | |||
|81/56 | |||
|243/224 | |||
|- | |||
|28/15, | |||
4096/2187 | |||
|7/5, | |||
1024/729 | |||
|21/20, | |||
256/243 | |||
|63/40, | |||
128/81 | |||
|32/27 | |||
|16/9 | |||
|4/3 | |||
|1/1 | |||
|3/2 | |||
|9/8 | |||
|27/16 | |||
|80/63, | |||
81/64 | |||
|40/21, | |||
243/128 | |||
|10/7, | |||
729/512 | |||
|15/14, | |||
2187/2048 | |||
|- | |||
|448/243 | |||
|112/81 | |||
|28/27 | |||
|14/9 | |||
|7/6 | |||
|7/4 | |||
|21/16 | |||
|63/32, | |||
160/81 | |||
|40/27 | |||
|10/9 | |||
|5/3 | |||
|5/4 | |||
|15/8 | |||
|45/32 | |||
|135/128 | |||
|- | |||
|49/27 | |||
|49/36 | |||
|49/48 | |||
|49/32 | |||
|147/128, | |||
280/243 | |||
|140/81 | |||
|35/27 | |||
|35/18 | |||
|35/24 | |||
|35/32 | |||
|105/64, | |||
400/243 | |||
|315/256, | |||
100/81 | |||
|50/27 | |||
|25/18 | |||
|25/24 | |||
|- | |||
|343/192 | |||
|343/256, | |||
980/729 | |||
|1029/1024, | |||
245/243 | |||
|245/162 | |||
|245/216 | |||
|245/144 | |||
|245/192 | |||
|245/128, | |||
1400/729 | |||
|735/512, | |||
350/243 | |||
|175/162 | |||
|175/108 | |||
|175/144 | |||
|175/96 | |||
|175/128 | |||
|250/243, | |||
525/512 | |||
|} | |||
{| class="wikitable" | |||
|+Interval table (far fifthward) | |||
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|} | |||