Sycamore family

Revision as of 16:23, 19 June 2011 by Wikispaces>xenwolf (**Imported revision 237584385 - Original comment: **)

IMPORTED REVISION FROM WIKISPACES

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

This revision was by author xenwolf and made on 2011-06-19 16:23:22 UTC.
The original revision id was 237584385.
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 head of the sycamore family is [[5-limit]] sycamore, which tempers out (25/24)^6/(5/4) = |-16 -6 11> = 48828125/47775744. The dual of the [[monzo]] is the [[wedgie]], <<11 6 -16||, which tells us that six chromatic semitone [[generator]]s give 5/4 (and hence five 6/5) and eleven give 3/2. [[94edo]] supports sycamore, and 5\94 is reommendable as a generator. It can be described as the 19&94 temperament, and uses a decidedly flat version of the chromatic semitone as a generator. [[MOS]] of 18 or 19 notes to the octave give enough room for sycamore's triads, but 37 notes can be tried by the adventurous.

Another possible tuning uses a generator which is a pure 3/2 divided into 11 parts, and this makes the generator chain of sycamore exactly the same as [[Carlos Beta]]. In fact, Carlos Beta is characterized by Carlos as taking five steps to reach 6/5 and six to reach 5/4, which means it tempers out the sycamore comma. It can be described as the generator chain of sycamore, or sycamore can be called Carlos Beta with octaves.

[[POTE tuning|POTE generator]]: 63.779

Map: [<1 1 2|, <0 11 6|]
EDOs: [[18edo|18]], [[19edo|19]], [[56edo|56]], [[75edo|75]], [[94edo|94]], 207, 508

==Seven limit children== 

===Septimal sycamore=== 
The second element of the [[Normal lists|normal comma list]] for septimal sycamore is 875/864, the keema, and it also tempers out 686/675, the senga, and 3136/3125, hemimean. It has <<11 6 15 -16 -7 18|| for a wedgie, and may also be called the 19&56 temperament. This may also be used as the name for the temperament obtained by adding 100/99 to sycamore's commas, giving unidecimal sycamore, where 10 generator steps reaches 16/11, 11 reach 3/2, and 15 give 7/4, adding a considerable dose of 11-limit harmonies to the 19-note MOS. [[75edo]] is an excellent tuning for 7-limit sycamore, and [[56edo]] for the 11-limit version.

Commas: 686/675, 875/864

[[POTE tuning|POTE generator]]: 63.995

Map: [<1 1 2 2|, <0 11 6 15|]
EDOs: 18, 19, 56, 75


11-limit
Commas: 100/99, 385/384, 686/675

[[POTE tuning|POTE generator]]: 64.268

Map: [<1 1 2 2 4|, <0 11 6 15 -10|]
EDOs: 18, 19, [[37edo|37]], 56

===Betic=== 
Septimal sycamore sharpens the fifth from where it stands in the 5-limit, and lowers accuracy in order to reach 7-limit harmonies. If we retain tunings approximately (eg 94et) or exactly those of Carlos Beta, we get the 19&94 temperament, betic, for the 7-limit. This adds 225/224 to the sycamore comma, and has <<11 6 34 -16 23 62|| as a wedgie. The Carlos Beta tuning, with pure fifths, is a good tuning choice, but 94 or 113 equal are as well. Betic extends to the 11-limit upon addition of 385/384 or 540/539 to the list of commas, which means it supports both 7 and 11-limit marvel. The wedgie starts <<11 6 34 -29 ...||.

Commas: 225/224, 1071875/1062882

[[POTE tuning|POTE generator]]: 63.701

Map: [<1 1 2 1|, <0 11 6 34|]
EDOs: 19, 75, 94, 113, 433

11-limit
Commas: 225/224, 385/384, 218750/216513

[[POTE tuning|POTE generator]]: 63.776

Map: [<1 1 2 1 5|, <0 11 6 34 -29|]
EDOs: 19, 75, 94, 207

Original HTML content:

<html><head><title>Sycamore family</title></head><body>The head of the sycamore family is <a class="wiki_link" href="/5-limit">5-limit</a> sycamore, which tempers out (25/24)^6/(5/4) = |-16 -6 11&gt; = 48828125/47775744. The dual of the <a class="wiki_link" href="/monzo">monzo</a> is the <a class="wiki_link" href="/wedgie">wedgie</a>, &lt;&lt;11 6 -16||, which tells us that six chromatic semitone <a class="wiki_link" href="/generator">generator</a>s give 5/4 (and hence five 6/5) and eleven give 3/2. <a class="wiki_link" href="/94edo">94edo</a> supports sycamore, and 5\94 is reommendable as a generator. It can be described as the 19&amp;94 temperament, and uses a decidedly flat version of the chromatic semitone as a generator. <a class="wiki_link" href="/MOS">MOS</a> of 18 or 19 notes to the octave give enough room for sycamore's triads, but 37 notes can be tried by the adventurous.<br />
<br />
Another possible tuning uses a generator which is a pure 3/2 divided into 11 parts, and this makes the generator chain of sycamore exactly the same as <a class="wiki_link" href="/Carlos%20Beta">Carlos Beta</a>. In fact, Carlos Beta is characterized by Carlos as taking five steps to reach 6/5 and six to reach 5/4, which means it tempers out the sycamore comma. It can be described as the generator chain of sycamore, or sycamore can be called Carlos Beta with octaves.<br />
<br />
<a class="wiki_link" href="/POTE%20tuning">POTE generator</a>: 63.779<br />
<br />
Map: [&lt;1 1 2|, &lt;0 11 6|]<br />
EDOs: <a class="wiki_link" href="/18edo">18</a>, <a class="wiki_link" href="/19edo">19</a>, <a class="wiki_link" href="/56edo">56</a>, <a class="wiki_link" href="/75edo">75</a>, <a class="wiki_link" href="/94edo">94</a>, 207, 508<br />
<br />
<!-- ws:start:WikiTextHeadingRule:0:&lt;h2&gt; --><h2 id="toc0"><a name="x-Seven limit children"></a><!-- ws:end:WikiTextHeadingRule:0 -->Seven limit children</h2>
 <br />
<!-- ws:start:WikiTextHeadingRule:2:&lt;h3&gt; --><h3 id="toc1"><a name="x-Seven limit children-Septimal sycamore"></a><!-- ws:end:WikiTextHeadingRule:2 -->Septimal sycamore</h3>
 The second element of the <a class="wiki_link" href="/Normal%20lists">normal comma list</a> for septimal sycamore is 875/864, the keema, and it also tempers out 686/675, the senga, and 3136/3125, hemimean. It has &lt;&lt;11 6 15 -16 -7 18|| for a wedgie, and may also be called the 19&amp;56 temperament. This may also be used as the name for the temperament obtained by adding 100/99 to sycamore's commas, giving unidecimal sycamore, where 10 generator steps reaches 16/11, 11 reach 3/2, and 15 give 7/4, adding a considerable dose of 11-limit harmonies to the 19-note MOS. <a class="wiki_link" href="/75edo">75edo</a> is an excellent tuning for 7-limit sycamore, and <a class="wiki_link" href="/56edo">56edo</a> for the 11-limit version.<br />
<br />
Commas: 686/675, 875/864<br />
<br />
<a class="wiki_link" href="/POTE%20tuning">POTE generator</a>: 63.995<br />
<br />
Map: [&lt;1 1 2 2|, &lt;0 11 6 15|]<br />
EDOs: 18, 19, 56, 75<br />
<br />
<br />
11-limit<br />
Commas: 100/99, 385/384, 686/675<br />
<br />
<a class="wiki_link" href="/POTE%20tuning">POTE generator</a>: 64.268<br />
<br />
Map: [&lt;1 1 2 2 4|, &lt;0 11 6 15 -10|]<br />
EDOs: 18, 19, <a class="wiki_link" href="/37edo">37</a>, 56<br />
<br />
<!-- ws:start:WikiTextHeadingRule:4:&lt;h3&gt; --><h3 id="toc2"><a name="x-Seven limit children-Betic"></a><!-- ws:end:WikiTextHeadingRule:4 -->Betic</h3>
 Septimal sycamore sharpens the fifth from where it stands in the 5-limit, and lowers accuracy in order to reach 7-limit harmonies. If we retain tunings approximately (eg 94et) or exactly those of Carlos Beta, we get the 19&amp;94 temperament, betic, for the 7-limit. This adds 225/224 to the sycamore comma, and has &lt;&lt;11 6 34 -16 23 62|| as a wedgie. The Carlos Beta tuning, with pure fifths, is a good tuning choice, but 94 or 113 equal are as well. Betic extends to the 11-limit upon addition of 385/384 or 540/539 to the list of commas, which means it supports both 7 and 11-limit marvel. The wedgie starts &lt;&lt;11 6 34 -29 ...||.<br />
<br />
Commas: 225/224, 1071875/1062882<br />
<br />
<a class="wiki_link" href="/POTE%20tuning">POTE generator</a>: 63.701<br />
<br />
Map: [&lt;1 1 2 1|, &lt;0 11 6 34|]<br />
EDOs: 19, 75, 94, 113, 433<br />
<br />
11-limit<br />
Commas: 225/224, 385/384, 218750/216513<br />
<br />
<a class="wiki_link" href="/POTE%20tuning">POTE generator</a>: 63.776<br />
<br />
Map: [&lt;1 1 2 1 5|, &lt;0 11 6 34 -29|]<br />
EDOs: 19, 75, 94, 207</body></html>