Tenney–Euclidean tuning: Difference between revisions
Wikispaces>genewardsmith **Imported revision 196931134 - Original comment: ** |
Wikispaces>genewardsmith **Imported revision 196932164 - Original comment: ** |
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<h2>IMPORTED REVISION FROM WIKISPACES</h2> | <h2>IMPORTED REVISION FROM WIKISPACES</h2> | ||
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | ||
: This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2011-01-28 16: | : This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2011-01-28 16:07:02 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>196932164</tt>.<br> | ||
: The revision comment was: <tt></tt><br> | : The revision comment was: <tt></tt><br> | ||
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | ||
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<144 228 336|, <228 361 532|, <336 532 784|]/1289 | <144 228 336|, <228 361 532|, <336 532 784|]/1289 | ||
Multiplying <12 19 28| by F gives <12 19 28| again. Multiplying the monzos for 81/80, 128/125, 648/625 and etc gives the zero monzo, corresponding to a unison. Multiplying the val for 5-limit 19 equal, <19 30 44|, by F gives [24360 38570 56840]/1289, which is approximately the 19 equal val. Multiplying the 5-limit monzo for 3/2, which is |-1 1 0> times F gives the fractional monzo corresponding to (2^84 3^133 5^196)^(1/1289), which equates to 698.121 | Multiplying <12 19 28| by F gives <12 19 28| again. Multiplying the monzos for 81/80, 128/125, 648/625 and etc gives the zero monzo, corresponding to a unison. Multiplying the val for 5-limit 19 equal, <19 30 44|, by F gives [24360 38570 56840]/1289, which is approximately the 19 equal val. Multiplying the 5-limit monzo for 3/2, which is |-1 1 0> times F gives the fractional monzo corresponding to (2^84 3^133 5^196)^(1/1289), which equates to 698.121 cents, the tempering of 3/2 in Frobenius tuning for 5-limit 12et, the tuning with octave defined by the top row of F, which is to say by |1 0 0>F, of 1196.778 cents. | ||
We can do the same thing with a matrix U with rows consisting of the vals for 7-limit 12 and | We can do the same thing with a matrix U with rows consisting of the vals for 7-limit 12 and 22 equal; then U`U, the Frobenius projection map for pajara, is | ||
[|36 92 14 32>, |92 269 -32 14>, |14 -32 141 148>, |32 14 148 64>]/305 | [|36 92 14 32>, |92 269 -32 14>, |14 -32 141 148>, |32 14 148 64>]/305 | ||
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&lt;144 228 336|, &lt;228 361 532|, &lt;336 532 784|]/1289<br /> | &lt;144 228 336|, &lt;228 361 532|, &lt;336 532 784|]/1289<br /> | ||
<br /> | <br /> | ||
Multiplying &lt;12 19 28| by F gives &lt;12 19 28| again. Multiplying the monzos for 81/80, 128/125, 648/625 and etc gives the zero monzo, corresponding to a unison. Multiplying the val for 5-limit 19 equal, &lt;19 30 44|, by F gives [24360 38570 56840]/1289, which is approximately the 19 equal val. Multiplying the 5-limit monzo for 3/2, which is |-1 1 0&gt; times F gives the fractional monzo corresponding to (2^84 3^133 5^196)^(1/1289), which equates to 698.121 | Multiplying &lt;12 19 28| by F gives &lt;12 19 28| again. Multiplying the monzos for 81/80, 128/125, 648/625 and etc gives the zero monzo, corresponding to a unison. Multiplying the val for 5-limit 19 equal, &lt;19 30 44|, by F gives [24360 38570 56840]/1289, which is approximately the 19 equal val. Multiplying the 5-limit monzo for 3/2, which is |-1 1 0&gt; times F gives the fractional monzo corresponding to (2^84 3^133 5^196)^(1/1289), which equates to 698.121 cents, the tempering of 3/2 in Frobenius tuning for 5-limit 12et, the tuning with octave defined by the top row of F, which is to say by |1 0 0&gt;F, of 1196.778 cents.<br /> | ||
<br /> | <br /> | ||
We can do the same thing with a matrix U with rows consisting of the vals for 7-limit 12 and | We can do the same thing with a matrix U with rows consisting of the vals for 7-limit 12 and 22 equal; then U`U, the Frobenius projection map for pajara, is <br /> | ||
<br /> | <br /> | ||
[|36 92 14 32&gt;, |92 269 -32 14&gt;, |14 -32 141 148&gt;, |32 14 148 64&gt;]/305<br /> | [|36 92 14 32&gt;, |92 269 -32 14&gt;, |14 -32 141 148&gt;, |32 14 148 64&gt;]/305<br /> | ||
<br /> | <br /> | ||
This sends monzos for 50/49, 64/63 etc to the unison monzo, and vals for 10et, 12et and 22et to themselves.</body></html></pre></div> | This sends monzos for 50/49, 64/63 etc to the unison monzo, and vals for 10et, 12et and 22et to themselves.</body></html></pre></div> | ||