Kite Guitar: Difference between revisions
→Scale Shapes: renamed the harmonic & subharmonic scales, added some paragraphs. |
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The modes of a scale are grouped together. Not every mode is shown. Two modes of a scale will use the same prime subgroup, so modes are grouped by subgroup. | The modes of a scale are grouped together. Not every mode is shown. Two modes of a scale will use the same prime subgroup, so modes are grouped by subgroup. | ||
Each scale has steps of various sizes, shown in the far right columns as both intervals and edosteps. Two modes of a scale will have the same step sizes, so modes are also grouped by step sizes. The largest-to-smallest ratio can be calculated directly from the edosteps. For example, the downminor and upmajor heptatonic scales have a very large L/s ratio of 8/2 = 4, giving them a lopsided feel. But the downminor/upmajor | Each scale has steps of various sizes, shown in the far right columns as both intervals and edosteps. Two modes of a scale will have the same step sizes, so modes are also grouped by step sizes. The largest-to-smallest ratio can be calculated directly from the edosteps. For example, the downminor and upmajor heptatonic scales have a very large L/s ratio of 8/2 = 4, giving them a lopsided feel. But the downminor/upmajor ''pentatonic'' scales have a very small L/s ratio of only 9/7 = 1.29, giving them a 5-edo-ish feel. | ||
Harmonic and subharmonic may be abbreviated as har- and | Harmonic and subharmonic may be abbreviated as har- and subhar-, e.g. harmajor pentatonic. | ||
=== Pentatonic Scales === | === Pentatonic Scales === | ||
Every pentatonic scale has 5 modes, but only those modes with a non-fuzzy 5th are listed. The harmonic and subharmonic scales are named after the triad implied by the 3rd and 5th, minus the up or down. Note that the harmonic | Every pentatonic scale has 5 modes, but only those modes with a non-fuzzy root and 5th are listed. The harmonic and subharmonic scales are named after the triad implied by the 3rd and 5th, minus the up or down. Note that the harmonic ''major'' scale contains a ''minor'' 7th, and the harmonic ''minor'' scale contains a ''major'' 6th. Likewise with the subharmajor and subharminor scales. A harmonic diminished pentatonic scale would be P1 ^m3 d5 ^m6 ^m7 P8 = 5:6:7:8:9. But it's not very plausible, and would be heard as one of the other modes. | ||
{| class="wikitable" | {| class="wikitable left-9 center-all" | ||
|+ | |+ | ||
!subgroup | !subgroup | ||
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|^m7 | |^m7 | ||
|P8 | |P8 | ||
|^m7,(^)11 chord | |style="text-align: left"|^m7,(^)11 chord | ||
|- | |- | ||
! rowspan="2" |za | ! rowspan="2" |za | ||
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|^M6 | |^M6 | ||
|P8 | |P8 | ||
|^6,(^)9 chord | |style="text-align: left"|^6,(^)9 chord | ||
|- | |- | ||
! rowspan="2" |yaza | ! rowspan="2" |yaza | ||
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|vM6 | |vM6 | ||
|P8 | |P8 | ||
|vm6,11 = 6:7:8:9:10 | |style="text-align: left"|vm6,11 = 6:7:8:9:10 | ||
|- | |- | ||
! rowspan="3" |" | ! rowspan="3" |" | ||
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|P8 | |P8 | ||
|^9 = 9/(9:8:7:6:5) | |^9 = 9/(9:8:7:6:5) | ||
| rowspan="3" | | | rowspan="3" |" | ||
| rowspan="3" |" | |||
| rowspan="3" | | |||
|- | |- | ||
!subharmonic minor | !subharmonic minor | ||
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|^M6 | |^M6 | ||
|P8 | |P8 | ||
|^m6,11 = 12/(12:10:9:8:7) | |style="text-align: left"|^m6,11 = 12/(12:10:9:8:7) | ||
|- | |- | ||
!subharmonic diminished | !subharmonic diminished | ||
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|vm7 | |vm7 | ||
|P8 | |P8 | ||
|vm7(b5),vm6 = 14/(14:12:10:9:8) | |style="text-align: left"|vm7(b5),vm6 = 14/(14:12:10:9:8) | ||
|} | |} | ||
=== Heptatonic Scales === | === Heptatonic Scales === | ||
Only a few of the modes are listed. See also the octotonic scales that omit the 15th harmonic. | Only a few of the modes are listed. See also the octotonic scales that omit the 15th harmonic. | ||
{| class="wikitable" | {| class="wikitable center-all" | ||
|+ | |+ | ||
!subgroup | !subgroup | ||
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=== Octatonic Scales === | === Octatonic Scales === | ||
The prime subgroup for all these scales is yazalatha (2.3.5.7.11.13). Omitting the 15th harmonic (the '''bolded''' note) makes a heptatonic scale that uses harmonics 7-14. | The scales listed here are all harmonic or subharmonic. The prime subgroup for all these scales is yazalatha (2.3.5.7.11.13). Omitting the 15th harmonic (the '''bolded''' note) makes a heptatonic scale that uses harmonics 7-14. | ||
The scales are named after the triad implied by the 3rd and 5th, minus the up or down. If there are two 3rds, the unbolded one is used. Each scale contains the similarly-named pentatonic scale, e.g. the | The scales are named after the triad implied by the 3rd and 5th, minus the up or down. If there are two 3rds, the unbolded one is used. Each scale contains the similarly-named pentatonic scale, e.g. the harmajor octotonic scale contains the harmajor pentatonic scale. | ||
One of the hallmarks of harmonic and subharmonic scales is that each step has a unique size. Unfortunately, while 41edo approximates the individual harmonics quite well, these scales do not have unique step sizes. The step sizes run 7 6 6 5 5 4 4 4. The heptatonic scales are better, 8 7 6 6 5 5 4. Only the pentatonic scales have unique step sizes. | One of the hallmarks of harmonic and subharmonic scales is that each step has a unique size. Unfortunately, while 41edo approximates the individual harmonics quite well, these scales do not have unique step sizes. The step sizes run 7 6 6 5 5 4 4 4. The heptatonic scales are better, 8 7 6 6 5 5 4. Only the pentatonic scales have unique step sizes. | ||
{| class="wikitable" | {| class="wikitable left-11 center-all" | ||
|+ | |+ | ||
! | ! | ||
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|~7 | |~7 | ||
|P8 | |P8 | ||
|12:13:14:'''15''':16:18:20:22 | |style="text-align: left"|12:13:14:'''15''':16:18:20:22 | ||
|- | |- | ||
!subharmonic major | !subharmonic major | ||
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|~7 | |~7 | ||
|P8 | |P8 | ||
|24/(24:22:20:18:16:'''15''':14:13) | |style="text-align: left"|24/(24:22:20:18:16:'''15''':14:13) | ||
|} | |} | ||
== Relative and Absolute Tab == | == Relative and Absolute Tab == |