Cv scales: Difference between revisions
Wikispaces>genewardsmith **Imported revision 206540752 - Original comment: ** |
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From [http://tech.groups.yahoo.com/group/tuning-math/message/11451 http://tech.groups.yahoo.com/group/tuning-math/message/11451] {{dead link}} | |||
It turns out there are a lot of five tetrad scales involving only 11 notes (I've got a list of 132 of them) but none I've found are | "''It turns out there are a lot of five tetrad scales involving only 11 notes (I've got a list of 132 of them) but none I've found are strictly [[Periodic_scale|epimorphic]]. Checking for permutation epimorphic scales may be a good plan.'' | ||
strictly epimorphic. Checking for permutation epimorphic scales may be a good plan. | |||
Of course, there are even more five tetrad scales with 12 notes, but here I give only ones which are epimorphic--all, as it turns out, with the [[ | ''Of course, there are even more five tetrad scales with 12 notes, but here I give only ones which are epimorphic--all, as it turns out, with the [[Patent_val|standard val]]. I cataloged these in pairs, where the odd numbers have three major and two minor tetrads, and the even pairs the reverse. Marvel tempering removes this distinction, and I only list the odd, with the three major tetrads.'' | ||
I found two scales I've found before, "pris" and "hen12". The latter is an adjusted version of the Hahn reduction of a chain of fifths. | ''I found two scales I've found before, "pris" and "hen12". The latter is an adjusted version of the Hahn reduction of a chain of fifths.''" | ||
<pre> | |||
! cv1.scl | ! cv1.scl | ||
First 12/5 <12 19 28 34| epimorphic | First 12/5 <12 19 28 34| epimorphic | ||
| Line 30: | Line 23: | ||
7/4 | 7/4 | ||
28/15 | 28/15 | ||
2 | 2/1 | ||
</pre> | |||
<pre> | |||
! cv3.scl | ! cv3.scl | ||
Third 12/5 scale <12 19 28 34| epimorphic = pris | Third 12/5 scale <12 19 28 34| epimorphic = pris | ||
| Line 47: | Line 42: | ||
7/4 | 7/4 | ||
28/15 | 28/15 | ||
2 | 2/1 | ||
</pre> | |||
<pre> | |||
! cv5.scl | ! cv5.scl | ||
Fifth 12/5 scale <12 19 28 34| epimorphic = inverse hen12 | Fifth 12/5 scale <12 19 28 34| epimorphic = inverse hen12 | ||
| Line 65: | Line 62: | ||
15/8 | 15/8 | ||
2 | 2 | ||
</pre> | |||
<pre> | |||
! cv7.scl | ! cv7.scl | ||
Seventh 12/5 scale <12 19 28 34| epimorphic | Seventh 12/5 scale <12 19 28 34| epimorphic | ||
| Line 81: | Line 80: | ||
9/5 | 9/5 | ||
15/8 | 15/8 | ||
2 | 2/1 | ||
</pre> | |||
<pre> | |||
! cv9.scl | ! cv9.scl | ||
Ninth 12/5 scale <12 19 28 34| epimorphic | Ninth 12/5 scale <12 19 28 34| epimorphic | ||
| Line 98: | Line 99: | ||
25/14 | 25/14 | ||
40/21 | 40/21 | ||
2 | 2/1 | ||
</pre> | |||
<pre> | |||
! cv11.scl | ! cv11.scl | ||
Eleventh 12/5 scale <12 19 28 34| epimorphic | Eleventh 12/5 scale <12 19 28 34| epimorphic | ||
| Line 115: | Line 118: | ||
9/5 | 9/5 | ||
15/8 | 15/8 | ||
2 | 2/1 | ||
</pre> | |||
<pre> | |||
! cv13.scl | ! cv13.scl | ||
Thirteenth 12/5 scale <12 19 28 34| epimorphic | Thirteenth 12/5 scale <12 19 28 34| epimorphic | ||
| Line 132: | Line 137: | ||
7/4 | 7/4 | ||
28/15 | 28/15 | ||
2 | 2/1 | ||
</pre> | </pre> | ||
{{Navbox scale gallery}} | |||
[[Category:Lists of scales]] | |||
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Latest revision as of 03:02, 28 September 2025
From http://tech.groups.yahoo.com/group/tuning-math/message/11451 [dead link]
"It turns out there are a lot of five tetrad scales involving only 11 notes (I've got a list of 132 of them) but none I've found are strictly epimorphic. Checking for permutation epimorphic scales may be a good plan.
Of course, there are even more five tetrad scales with 12 notes, but here I give only ones which are epimorphic--all, as it turns out, with the standard val. I cataloged these in pairs, where the odd numbers have three major and two minor tetrads, and the even pairs the reverse. Marvel tempering removes this distinction, and I only list the odd, with the three major tetrads.
I found two scales I've found before, "pris" and "hen12". The latter is an adjusted version of the Hahn reduction of a chain of fifths."
! cv1.scl First 12/5 <12 19 28 34| epimorphic 12 ! 16/15 8/7 7/6 5/4 4/3 7/5 3/2 8/5 5/3 7/4 28/15 2/1
! cv3.scl Third 12/5 scale <12 19 28 34| epimorphic = pris 12 ! 16/15 28/25 7/6 5/4 4/3 7/5 3/2 8/5 5/3 7/4 28/15 2/1
! cv5.scl Fifth 12/5 scale <12 19 28 34| epimorphic = inverse hen12 12 ! 15/14 9/8 6/5 5/4 21/16 7/5 3/2 8/5 12/7 7/4 15/8 2
! cv7.scl Seventh 12/5 scale <12 19 28 34| epimorphic 12 ! 21/20 9/8 6/5 9/7 21/16 7/5 3/2 8/5 12/7 9/5 15/8 2/1
! cv9.scl Ninth 12/5 scale <12 19 28 34| epimorphic 12 ! 15/14 8/7 7/6 5/4 4/3 10/7 32/21 8/5 5/3 25/14 40/21 2/1
! cv11.scl Eleventh 12/5 scale <12 19 28 34| epimorphic 12 ! 15/14 9/8 6/5 9/7 21/16 7/5 3/2 8/5 12/7 9/5 15/8 2/1
! cv13.scl Thirteenth 12/5 scale <12 19 28 34| epimorphic 12 ! 16/15 28/25 6/5 5/4 4/3 7/5 3/2 8/5 12/7 7/4 28/15 2/1
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