80edo

From Xenharmonic Wiki
Revision as of 18:00, 29 January 2011 by Wikispaces>genewardsmith (**Imported revision 197086726 - Original comment: **)
Jump to navigation Jump to search

IMPORTED REVISION FROM WIKISPACES

This is an imported revision from Wikispaces. The revision metadata is included below for reference:

This revision was by author genewardsmith and made on 2011-01-29 18:00:22 UTC.
The original revision id was 197086726.
The revision comment was:

The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.

Original Wikitext content:

The //80 equal temperament//, often abbreviated 80-tET, 80-EDO, or 80-ET, is the scale derived by dividing the octave into 80 equally-sized steps. Each step represents a frequency ratio of exactly 15 cents. 80et is the first equal temperament to represent the 19-limit [[tonality diamond]] consistently, and in fact represents the 21 odd limit tonality diamond consistently also.

80 et tempers out 136/135, 169/168, 176/175, 190/189, 221/220, 256/255, 286/285, 289/288, 325/324, 351/350, 352/351, 361/360, 364/363, 400/399, 456/455, 476/475, 540/539, 561/560, 595/594, 715/714, 936/935, 969/968, 1001/1000, 1275/1274, 1331/1330, 1445/1444, 1521/1520, 1540/1539 and  1729/1728, not to mention such important non-superparticular commas as 2048/2025, 4000/3969, 1728/1715 and 3136/3125.

80 supports a profusion of 19-limit (and lower) rank two temperaments which have mostly not been explored. We might mention:

31&80 <<7 6 15 27 -24 -23 -20 ... ||
72&80 <<24 30 40 24 32 24 0 ... ||
34&80 <<2 -4 -50 22 16 2 -40 ... ||
46&80 <<2 -4 30 22 16 2 40 ... ||
29&80 <<3 34 45 33 24 -37 20 ... ||
12&80 <<4 -8 -20 -36 32 4 0 ... ||
22&80 <<6 -10 12 -14 -32 6 -40 ... ||
58&80 <<6 -10 12 -14 -32 6 40 ... ||
41&80 <<7 26 25 -3 -24 -33 20 ... ||

In each case, the numbers joined by an ampersand represent 19-limit [[Patent val|patent vals]] (meaning obtained by rounding to the nearest integer) and the first and most important part of the wedgie is given.

Original HTML content:

<html><head><title>80edo</title></head><body>The <em>80 equal temperament</em>, often abbreviated 80-tET, 80-EDO, or 80-ET, is the scale derived by dividing the octave into 80 equally-sized steps. Each step represents a frequency ratio of exactly 15 cents. 80et is the first equal temperament to represent the 19-limit <a class="wiki_link" href="/tonality%20diamond">tonality diamond</a> consistently, and in fact represents the 21 odd limit tonality diamond consistently also.<br />
<br />
80 et tempers out 136/135, 169/168, 176/175, 190/189, 221/220, 256/255, 286/285, 289/288, 325/324, 351/350, 352/351, 361/360, 364/363, 400/399, 456/455, 476/475, 540/539, 561/560, 595/594, 715/714, 936/935, 969/968, 1001/1000, 1275/1274, 1331/1330, 1445/1444, 1521/1520, 1540/1539 and  1729/1728, not to mention such important non-superparticular commas as 2048/2025, 4000/3969, 1728/1715 and 3136/3125.<br />
<br />
80 supports a profusion of 19-limit (and lower) rank two temperaments which have mostly not been explored. We might mention:<br />
<br />
31&amp;80 &lt;&lt;7 6 15 27 -24 -23 -20 ... ||<br />
72&amp;80 &lt;&lt;24 30 40 24 32 24 0 ... ||<br />
34&amp;80 &lt;&lt;2 -4 -50 22 16 2 -40 ... ||<br />
46&amp;80 &lt;&lt;2 -4 30 22 16 2 40 ... ||<br />
29&amp;80 &lt;&lt;3 34 45 33 24 -37 20 ... ||<br />
12&amp;80 &lt;&lt;4 -8 -20 -36 32 4 0 ... ||<br />
22&amp;80 &lt;&lt;6 -10 12 -14 -32 6 -40 ... ||<br />
58&amp;80 &lt;&lt;6 -10 12 -14 -32 6 40 ... ||<br />
41&amp;80 &lt;&lt;7 26 25 -3 -24 -33 20 ... ||<br />
<br />
In each case, the numbers joined by an ampersand represent 19-limit <a class="wiki_link" href="/Patent%20val">patent vals</a> (meaning obtained by rounding to the nearest integer) and the first and most important part of the wedgie is given.</body></html>