User:Overthink/The 7-limit in 53edo: Difference between revisions
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; Development of this page is paused indefinitely. 171edo is much more interesting. | |||
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="mw-collapsible wikitable" | {| class="mw-collapsible wikitable" | ||
| Line 17: | Line 18: | ||
| 2 | | 2 | ||
| 45.283 | | 45.283 | ||
| 36/35, 49/48, 128/125 | | 36/35, 49/48, 128/125, 250/243 | ||
|- | |- | ||
| 3 | | 3 | ||
| Line 37: | Line 38: | ||
| 7 | | 7 | ||
| 158.491 | | 158.491 | ||
| 35/32 | | 35/32 | ||
|- | |- | ||
| 8 | | 8 | ||
| Line 53: | Line 54: | ||
| 11 | | 11 | ||
| 249.057 | | 249.057 | ||
| 81/70 | | 81/70, 125/108, 144/125, 147/128 | ||
|- | |- | ||
| 12 | | 12 | ||
| Line 81: | Line 82: | ||
| 18 | | 18 | ||
| 407.547 | | 407.547 | ||
| 81/64 | | 81/64 | ||
|- | |- | ||
| 19 | | 19 | ||
| Line 105: | Line 106: | ||
| 24 | | 24 | ||
| 543.396 | | 543.396 | ||
| | | 48/35 | ||
|- | |- | ||
| 25 | | 25 | ||
| Line 113: | Line 114: | ||
| 26 | | 26 | ||
| 588.679 | | 588.679 | ||
| 729 | | 1024/729, 7/5, 45/32 | ||
|- | |- | ||
| 27 | | 27 | ||
| 611.321 | | 611.321 | ||
| | | 729/512, 10/7, 64/45 | ||
|- | |- | ||
| 28 | | 28 | ||
| Line 222: | 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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{| class="wikitable" | |||
|+Hemifamity interval table (middle) | |||
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|256/175 | |||
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|256/245, | |||
729/700 | |||
|384/245 | |||
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|512/343 | |||
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|- | |||
|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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|} | |} | ||