User:TromboneBoi9/Generalized Dual-Fifth Notation: Difference between revisions
TromboneBoi9 (talk | contribs) Created page with "'''General dual-fifth notation''' (or ''GDF'' notation) is a system of notation that is designed for use with dual-fifth temperaments, intended for use with smaller dual-fifth EDOs. It can perhaps be considered a form of ups and downs notation since it uses the same nominals, symbols, and general principles, and when used for EDOs, it often materializes as a subset notation. The main goal of GDF notation is to describe intervals closer to what they a..." |
TromboneBoi9 (talk | contribs) reorganization and added alt names columns to tables |
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'''General dual-fifth notation''' (or ''GDF'' notation) is a system of notation that is designed for use with [[dual-fifth]] temperaments, intended for use with smaller dual-fifth [[EDO|EDOs]]. It can perhaps be considered a form of [[ups and downs notation]] since it uses the same nominals, symbols, and general principles, and when used for EDOs, it often materializes as a [[subset notation]]. | '''General dual-fifth notation''' (or ''GDF'' notation) is a system of notation that is designed for use with [[dual-fifth]] temperaments, intended for use with smaller dual-fifth [[EDO|EDOs]]. It can perhaps be considered a form of [[ups and downs notation]] since it uses the same nominals, symbols, and general principles, and when used for EDOs, it often materializes as a [[subset notation]]. | ||
==Overview== | |||
The | The main goal of GDF notation is to describe intervals closer to what they actually "are," rather than notation systems like [[antidiatonic]] (assigning the minor fifth to the ''perfect fifth'') which switches the minor-major duality. | ||
That is to say, GDF relies on the logic that '''the major fifth and the minor fifth make a major ninth''' (major second when octave-reduced), or that <math>3^+ \cdot 3^- = 9</math>. | GDF notation does this by maintaining some fidelity to the [[Chain-of-fifths notation|chain of fifths]] as used in other approachable notation systems. To do so, it relies instead on the [[9/8|major second]], since a chain of 9/8 major seconds is the same as every other step in a chain of fifths (assuming octave equivalence). Every remaining step in between is split to accommodate the dual fifths, with the major fifths notated as raised fifths (^5) and minor fifths notated as lowered fifths (v5). This ensures that there is no fifth that resembles a ''perfect'' fifth, as dual-fifth systems do not have them. | ||
That is to say, GDF relies on the logic that '''the major fifth and the minor fifth make a major ninth''' (major second when octave-reduced), or that <math>3^+ \cdot 3^- = 9</math>. This also means, unlike antidiatonic, neither of the major seconds generated from the off-fifths are treated as perfectly ''major'': | |||
* Two major fifths make a doubly-raised second (^^M2). | |||
* Two minor fifths make a doubly-lowered second (vvM2). | |||
With split fifths, a chain of fifths would look something like this: | With split fifths, a chain of fifths would look something like this: | ||
| Line 35: | Line 38: | ||
| vG♭ || vA♭ || vB♭ || vC || vD || vE || vF♯ | | vG♭ || vA♭ || vB♭ || vC || vD || vE || vF♯ | ||
|} | |} | ||
===Relation to ups and downs=== | |||
When using GDF notation with EDOs (especially small EDOs), it's usually the case that the GDF notation of <math>n</math>-edo is identical to the [[subset notation]] loaned from the [[ups and downs notation]] of <math>2n</math>-edo. | |||
That being said, it should be noted that the symbols ''^'' and ''v'' used in GDF do '''not''' have the same meaning that they do in ups and downs notation (that is, an alteration of one [[arrow|edostep]]). In GDF, these symbols indicate alterations of a ''half''-edostep; full edosteps are indicated by ''^^'' and ''vv''. | |||
It may help to trade the ''^'' and ''v'' symbols for something else, e.g. ''/'' and ''\'' (slash and backslash), so that ''^'' and ''v'' can keep their original meaning in ups and downs while the offset chains of seconds remain visually distinct. Just remember that ''/'' + ''/'' = ''^''. | |||
==Tables== | ==Tables== | ||
===13edo=== | ===13edo=== | ||
GDF notation of [[13edo]] is identical to [[26edo]] subset notation. | GDF notation of [[13edo]] is identical to [[26edo]] subset notation. | ||
{|class="wikitable" | {|class="wikitable" | ||
! Steps !! Cents !! | ! Steps !! Cents !! Names !! Alt. Names | ||
|- | |- | ||
| 0 || 0.00 || C, vC♯ | | 0 || 0.00 || C, vC♯ ^C♭ || C, \C♯, /C♭ | ||
|- | |- | ||
| 1 || 92.31 || ^C♯, vD♭ | | 1 || 92.31 || ^^C, ^C♯, vD♭, vvD || ^C, /C♯, \D♭, vD | ||
|- | |- | ||
| 2 || 184.62 || D, ^D♭ | | 2 || 184.62 || D, ^D♭, vD♯ || D, /D♭, \D♯ | ||
|- | |- | ||
| 3 || 276.92 || ^D♯, vE♭ | | 3 || 276.92 || ^^D, ^D♯, vE♭, vvE || ^D, /D♯, \E♭, vE | ||
|- | |- | ||
| 4 || 369.23 || E, ^E♭ | | 4 || 369.23 || E, ^E♭ || E, /E♭ | ||
|- | |- | ||
| 5 || 461.54 || ^E♯, vF | | 5 || 461.54 || vF, ^^E, vvF♯ || \F, ^E, vF♯ | ||
|- | |- | ||
| 6 || 553.85 || F♯, | | 6 || 553.85 || ^F, F♯, vG♭ || /F, F♯, \G♭ | ||
|- | |- | ||
| 7 || 646.15 || G♭, vG | | 7 || 646.15 || vG, G♭, ^^F♯, vvG♯ || \G, G♭, ^F♯, vG♭ | ||
|- | |- | ||
| 8 || 738.46 || G♯, ^G | | 8 || 738.46 || ^G, G♯, ^^G♭, vvA♭ || /G, G♯, ^G♭, vA♭ | ||
|- | |- | ||
| 9 || 830.77 || A♭, vA | | 9 || 830.77 || vA, A♭, ^^G♯, vvA♯ || \A, A♭, ^G♯, vA♯ | ||
|- | |- | ||
| 10 || 923.08 || A♯, ^A | | 10 || 923.08 || ^A, A♯ ^^A♭, vvB♭ || /A, A♯, ^A♭, vB♭ | ||
|- | |- | ||
| 11 || 1015.38 || B♭, | | 11 || 1015.38 || vB, B♭, ^^A♯ || \B, B♭, ^A♯ | ||
|- | |- | ||
| 12 || 1107.69 || ^B, vC♭ | | 12 || 1107.69 || ^B, ^^B♭, vC♭ || /B, ^B♭, \C♭ | ||
|- | |- | ||
| 13 || 1200.00 || C, vC♯ | | 13 || 1200.00 || C, vC♯, ^C♭ || C, \C♯, /C♭ | ||
|} | |} | ||
| Line 78: | Line 86: | ||
GDF notation of [[18edo]] is identical to [[36edo]] subset notation. | GDF notation of [[18edo]] is identical to [[36edo]] subset notation. | ||
{|class="wikitable" | {|class="wikitable" | ||
! Steps !! Cents !! | ! Steps !! Cents !! Names !! Alt. Names | ||
|- | |- | ||
| 0 || 0.00 || C | | 0 || 0.00 || C || C | ||
|- | |- | ||
| 1 || 66.67 || vC♯, vD♭ | | 1 || 66.67 || vC♯, vD♭, ^^C || \C♯, \D♭, ^C | ||
|- | |- | ||
| 2 || 133.33 || ^C♯, ^D♭ | | 2 || 133.33 || ^C♯, ^D♭, vvD || /C♯, /D♭, vD | ||
|- | |- | ||
| 3 || 200.00 || D | | 3 || 200.00 || D || D | ||
|- | |- | ||
| 4 || 266.67 || vD♯, vE♭ | | 4 || 266.67 || vD♯, vE♭, ^^D || \D♯, \E♭, ^D | ||
|- | |- | ||
| 5 || 333.33 || ^D♯, ^E♭ | | 5 || 333.33 || ^D♯, ^E♭, vvE || /D♯, /E♭, vE | ||
|- | |- | ||
| 6 || 400.00 || E | | 6 || 400.00 || E || E | ||
|- | |- | ||
| 7 || 466.67 || vF | | 7 || 466.67 || vF, ^^E || \F, ^E | ||
|- | |- | ||
| 8 || 533.33 || ^F | | 8 || 533.33 || ^F, vvF♯, vvG♭ || /F, vF♯, vG♭ | ||
|- | |- | ||
| 9 || 600.00 || F♯, G♭ | | 9 || 600.00 || F♯, G♭ || F♯, G♭ | ||
|- | |- | ||
| 10 || 666.67 || vG | | 10 || 666.67 || vG, ^^F♯, ^^G♭ || \G, ^F♯, ^G♭ | ||
|- | |- | ||
| 11 || 733.33 || ^G | | 11 || 733.33 || ^G, vvG♯, vvA♭ || /G, vG♯, vA♭ | ||
|- | |- | ||
| 12 || 800.00 || G♯, A♭ | | 12 || 800.00 || G♯, A♭ || G♯, A♭ | ||
|- | |- | ||
| 13 || 866.67 || vA | | 13 || 866.67 || vA, ^^G♯, ^^A♭ || \A, ^G♯, ^A♭ | ||
|- | |- | ||
| 14 || 933.33 || ^A | | 14 || 933.33 || ^A, vvA♯, vvB♭ || /A, vA♯, vB♭ | ||
|- | |- | ||
| 15 || 1000.00 || A♯, B♭ | | 15 || 1000.00 || A♯, B♭ || A♯, B♭ | ||
|- | |- | ||
| 16 || 1066.67 || vB | | 16 || 1066.67 || vB, ^^A♯, ^^B♭ || \B, ^A♯, ^B♭ | ||
|- | |- | ||
| 17 || 1133.33 || ^B | | 17 || 1133.33 || ^B, vvC || /B, vC | ||
|- | |- | ||
| 18 || 1200.00 || C | | 18 || 1200.00 || C || C | ||
|} | |} | ||
| Line 122: | Line 130: | ||
GDF notation of [[23edo]] is identical to [[46edo]] subset notation. | GDF notation of [[23edo]] is identical to [[46edo]] subset notation. | ||
{|class="wikitable" | {|class="wikitable" | ||
! Steps !! Cents !! | ! Steps !! Cents !! Names !! Alt. Names | ||
|- | |- | ||
| 0 || 0.00 || C | | 0 || 0.00 || C || C | ||
|- | |- | ||
| 1 || 52.17 || ^^C, vD♭ | | 1 || 52.17 || ^^C, vD♭ || ^C, \D♭ | ||
|- | |- | ||
| 2 || 104.35 || vC♯, ^D♭ | | 2 || 104.35 || vC♯, ^D♭ || \C♯, /D♭ | ||
|- | |- | ||
| 3 || 156.52 || ^C♯, vvD | | 3 || 156.52 || ^C♯, vvD || /C♯, vD | ||
|- | |- | ||
| 4 || 208.70 || D | | 4 || 208.70 || D || D | ||
|- | |- | ||
| 5 || 260.87 || ^^D, vE♭ | | 5 || 260.87 || ^^D, vE♭ || ^D, \E♭ | ||
|- | |- | ||
| 6 || 313.04 || vD♯, ^E♭ | | 6 || 313.04 || vD♯, ^E♭ || \D♯, /E♭ | ||
|- | |- | ||
| 7 || 365.22 || ^D♯, vvE | | 7 || 365.22 || ^D♯, vvE || /D♯, vE | ||
|- | |- | ||
| 8 || 417.39 || E | | 8 || 417.39 || E || E | ||
|- | |- | ||
| 9 || 469.57 || ^^E, vF | | 9 || 469.57 || ^^E, vF || ^E, \F | ||
|- | |- | ||
| 10 || 521.74 || ^F, vvG♭ | | 10 || 521.74 || ^F, vvG♭ || /F, vG♭ | ||
|- | |- | ||
| 11 || 573.91 || vvF♯, G♭ | | 11 || 573.91 || vvF♯, G♭ || vF♯, G♭ | ||
|- | |- | ||
| 12 || 626.09 || F♯, ^^G♭ | | 12 || 626.09 || F♯, ^^G♭ || F♯, ^G♭ | ||
|- | |- | ||
| 13 || 678.26 || ^^F♯, vG | | 13 || 678.26 || ^^F♯, vG || ^F♯, \G | ||
|- | |- | ||
| 14 || 730.43 || ^G, vvA♭ | | 14 || 730.43 || ^G, vvA♭ || /G, vA♭ | ||
|- | |- | ||
| 15 || 782.61 || vvG♯, A♭ | | 15 || 782.61 || vvG♯, A♭ || vG♯, A♭ | ||
|- | |- | ||
| 16 || 834.78 || G♯, ^^A♭ | | 16 || 834.78 || G♯, ^^A♭ || G♯, ^A♭ | ||
|- | |- | ||
| 17 || 886.96 || ^^G♯, vA | | 17 || 886.96 || ^^G♯, vA || ^G♯, \A | ||
|- | |- | ||
| 18 || 939.13 || ^A, vvB♭ | | 18 || 939.13 || ^A, vvB♭ || /A, vB♭ | ||
|- | |- | ||
| 19 || 991.30 || B♭ | | 19 || 991.30 || B♭ || B♭ | ||
|- | |- | ||
| 20 || 1043.48 || ^^B♭, vC♭ | | 20 || 1043.48 || ^^B♭, vC♭ || ^B♭, \C♭ | ||
|- | |- | ||
| 21 || 1095.65 || vB, ^C♭ | | 21 || 1095.65 || vB, ^C♭ || \B, /C♭ | ||
|- | |- | ||
| 22 || 1147.83 || ^B | | 22 || 1147.83 || ^B, vvC || \B, vC | ||
|- | |- | ||
| 23 || 1200.00 || C | | 23 || 1200.00 || C || C | ||
|} | |} | ||