[[file:Armodue_Neck.PNG|frame|none|Dot-Pattern inlays, by Armodue]]
[[file:Armodue_Neck.PNG|frame|none|Dot-Pattern inlays, by Armodue]]
== Alternative Armodue tunings ==
As the standard intervals of Armodue may be too discordant for some composers and/or listeners, here are several alternative tunings:
=== Armodue just intonation - connection to Lou Harrison and Andrián Pertout ===
Armodue Just Intonation is nothing else than the 16-note scale by[[Lou_Harrison| Lou Harrison]] based on simple ratios and pure intervals. In this scale there are practically the same twelve intervals of the "natural" or "Zarlinian" scale (the semitone 16/15, the minor wholetone 10/9, the minor third 6/5, the major third 5/4, the pure forth and fifth 4/3 and 3/2, the minor sixth 8/5, the major sixth 5/3, the minor seventh that is the complement of the minor wholetone 9/5, the major seventh 15/8) in addition to the tritone and four other intervals that are based on the harmonic seventh (the ratios 8/7, 7/6, 12/7, 7/4).
The composer Andrián Pertout used a very similar scale in his composition "Sonus dulcis" ([http://web.archive.org/web/20040511172650/http://www.users.bigpond.com/apertout/Sonus.htm article on archive.org]), namely the following (according to [http://www.armodue.com/risorse.htm Armodue]):
{| class="wikitable"
|-
! | Armodue note
! | Interval
! | Ratio
! | Cents
|-
| | 1
| | unison
| | 1/1
| | 0
|-
| | 1#
| | major half-tone
| | 16/15
| | 112
|-
| | 2
| | minor tone
| | 10/9
| | 182
|-
| | 2#
| | major tone
| | 9/8
| | 204
|-
| | 3
| | minor third
| | 6/5
| | 316
|-
| | 3#
| | major third
| | 5/4
| | 386
|-
| | 4
| | fourth
| | 4/3
| | 498
|-
| | 5
| | harmonic tritone
| | 45/32
| | 590
|-
| | 5#
| | cyclic tritone
| | 64/45
| | 610
|-
| | 6
| | fifth
| | 3/2
| | 702
|-
| | 6#
| | diminished sixth
| | 8/5
| | 814
|-
| | 7
| | harmonic sixth
| | 5/3
| | 884
|-
| | 7#
| | harmonic minor seventh
| | 7/4
| | 969
|-
| | 8
| | minor seventh
| | 16/9
| | 996
|-
| | 8#
| | minor seventh
| | 9/5
| | 1018
|-
| | 9
| | major seventh
| | 15/8
| | 1088
|}
=== Semi-equalized Armodue ===
One step of 16edo (75 cents) is nearly equal to two steps (2\31) of [[31edo|31edo]] (77.42 cents). If we take the latter as a base, we get semi-equalized Armodue. In this temperament there is inevitably a smaller microtone (eka between the notes '7#' and '8'). leading to the 16 note MOS Valentine[16] of [[Starling_temperaments#Valentine temperament|valentine temperament]]. Similarly we might use three steps of [[46edo|46edo]], 3\46, 78.26 cents, or five steps of [[77edo|77edo]], 77.92 cents.
Semi-equalized Armodue provides a balance between the symmetry of the equalized system and the purity of natural intervals: intervals of semi-equalized Armodue are very pure, and at the same time it preserves the symmetry of the equalized system and its interval sizes almost unchanged.
{| class="wikitable"
|-
! | Armodue note
! | cents (16edo)
! | cents (semi-equalized Armodue based on [[31edo|31edo]])
|-
| | 1
| | 0
| | 0
|-
| | 1#
| | 75
| | 77.42
|-
| | 2
| | 150
| | 154.84
|-
| | 2#
| | 225
| | 232.26
|-
| | 3
| | 300
| | 309.68
|-
| | 3#
| | 375
| | 387.10
|-
| | 4
| | 450
| | 464.52
|-
| | 5
| | 525
| | 541.94
|-
| | 5#
| | 600
| | 619.35
|-
| | 6
| | 675
| | 696.77
|-
| | 6#
| | 750
| | 774.19
|-
| | 7
| | 825
| | 851.61
|-
| | 7#
| | 900
| | 929.03
|-
| | 8
| | 975
| | 967.74
|-
| | 8#
| | 1050
| | 1045.16
|-
| | 9
| | 1125
| | 1122.58
|}
[[Category:16edo]]
[[Category:16edo]]
[[Category:Armodue]]
[[Category:Armodue]]
Latest revision as of 01:42, 11 April 2025
(summary translation from the Italian language siteArmodue)
In order to make Armodue approachable, while also making its notation distinct from Western diatonic notation, the Italian creators of the Armodue system named the notes using numbers from 1 to 9:
This is the recommended system for Armodue theory, though in technicality any notation system can be used.
Relative notation is simply done by specifying the number of edosteps, in order to support alternative scale constructions. For example, one refers not to the perfect fourth or fifth (at least in the specific sense of Armodue intervals) but to the intervals of 7-eka and 9-eka.
However, the interval between a note at frequency n and other at frequency 2n is called a tenth,decave, or decim, as it is the tenth note of the Mavila[9] scale.
The basic semitone of Armodue, whatever concrete temperament is used, is always called eka (from Sanskrit eka: one, unit). In the chromatic Armodue scale, one eka always corresponds to the interval between any two consecutive notes.
The standard staff notation for Armodue uses 4 lines, so that 1 is always found below the first line, and 9 above the last line.
This notation is similar to the KISS notation using numbers for this scale, except with the staff laid out differently (i.e. in KISS, the standard treble and bass clefs are used, and the staff has 6 lines instead of 4)
When multiple staves are necessary, the notes will be written in the same way in every staff.
In other words, the "1" note will be written immediately under the first line in every tenth.
In Armodue we have only a numeric clef, that shows us the tenth:
The clefs 1,2,3... refers to the tenths: first, second, third...
So, in the illustrated example above, the first staff (from top) refers to the 3rd tenth (central tenth, corresponding to the octave C3-C4), the second tetragram to the 5th tenth and the third to the 2nd. If we need to write simultaneously on several staves, we will draw normal braces.
Note that you cannot connect staves like in standard notation, because the lines are offset from one decave to the next.
This is a keyboard layout for Armodue, which can also be seen as a standard mavila keyboard layout for 16edo.
