User:Overthink/Neutral scale theory: Difference between revisions
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In diatonic, chords are built by Root-3rd-5th. We can try to use the same logic here. This gives us neutral (P1-P3-M5) chords on C, E, F, G, and A, a P1-d3-m5 chord on D, and a P1-P3-m5 chord on B. This construction, however, is flawed, as none of these chords can be written with particularly simple ratios, and therefore these chords aren't very consonant. | In diatonic, chords are built by Root-3rd-5th. We can try to use the same logic here. This gives us neutral (P1-P3-M5) chords on C, E, F, G, and A, a P1-d3-m5 chord on D, and a P1-P3-m5 chord on B. This construction, however, is flawed, as none of these chords can be written with particularly simple ratios, and therefore these chords aren't very consonant. | ||
This scale is in the [[2.3.11 subgroup]], with the fundamental otonal consonance being [[8:9:11:12]] (or one of its different voicings), which in our scale is P1-M2-M4-M5. A different construction, Root-2nd-4th-5th, is now needed. The utonal inverse of 8:9:11:12 is 1/(8:9:11:12) = [[66:72:88:99]], or P1-m2-m4-M5. The otonal 8:9:11:12 chord occurs on F and A, and the utonal 1/(8:9:11:12) chord occurs on E and G. Neither chord occurs on C, B, or D, with a P1-M2-m4-M5 | This scale is in the [[2.3.11 subgroup]], with the fundamental otonal consonance being [[8:9:11:12]] (or one of its different voicings), which in our scale is P1-M2-M4-M5. A different construction, Root-2nd-4th-5th, is now needed. The utonal inverse of 8:9:11:12 is 1/(8:9:11:12) = [[66:72:88:99]], or P1-m2-m4-M5. The otonal 8:9:11:12 chord occurs on F and A, and the utonal 1/(8:9:11:12) chord occurs on E and G. Neither chord occurs on C, B, or D, with a P1-M2-m4-M5 chord on C, and a P1-m2-m4-m5 chord on B and D. Of course, this is only one possible construction. Note that chords can also be constructed as a chain of three fourths (4/3 or 11/8) or fifths (3/2 or 16/11), with the chain being 4th-Root-5th-2nd for fifths and the reverse for fourths. | ||
We need names for these chords, and once again we can borrow some from diatonic | We need names for these chords, and once again we can borrow some from diatonic. The major and minor chords are otonal and utonal respectively. The suspended chord is [[3-limit]], like the suspended chord in diatonic, with a [[32/27]] dissonance here compared to a [[9/8]] dissonance (which we consider a consonance here) in diatonic. The '''Ambi''' chord is named for being ambitonal, and is notably an [[anomalous saturated suspension]]. | ||
{| class="wikitable" | {| class="wikitable" | ||
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| P1-M2-M4-M5 | | P1-M2-M4-M5 | ||
| M4-P1-M5-M2 | | M4-P1-M5-M2 | ||
| '''Major / M''' | | '''Major / M''' (or no symbol) | ||
|- | |- | ||
| P1-m2-m4-M5 | | P1-m2-m4-M5 | ||
| Line 101: | Line 101: | ||
| P1-m2-m4-m5 | | P1-m2-m4-m5 | ||
| m4-P1-m5-m2 | | m4-P1-m5-m2 | ||
| '''Ambi / | | '''Ambi / am''' | ||
|} | |} | ||
On the white keys (C, D, E, ...), we have Csus, Dam, Em, F, Gm, A, and Bam. While this mode has a 3/2 interval above the I, IV, and V, there is a lack of tonality with a sus chord on the root. | |||
=== Modes === | |||
This scale has 7 modes. They are listed below, with the intervals of the mode and chords on each note of the scale. | |||
{| class="wikitable" | |||
|+ Modes of mosh (brightest to darkest) | |||
|- | |||
! Name<ref>[https://en.xen.wiki/w/3L_4s#Proposed_names 3L 4s] on Xenharmonic Wiki</ref> | |||
! Intervals | |||
! Chords (from I to VII) | |||
|- | |||
| Dalmatian | |||
| P1, M2, P3, M4, M5, A6, M7 | |||
| I, ii, III, IVam, Vsus, VIam, vii | |||
|- | |||
| Galatian | |||
| P1, M2, P3, M4, M5, P6, M7 | |||
| I, IIam, IIIsus, IVam, v, VI, vii | |||
|- | |||
| Cilician | |||
| P1, M2, P3, m4, M5, P6, M7 | |||
| Isus, IIam, iii, IV, v, VI, VIIam | |||
|- | |||
| Bithynian | |||
| P1, m2, P3, m4, M5, P6, M7 | |||
| i, II, iii, IV, Vam, VIsus, VIIam | |||
|- | |||
| Pisidian | |||
| P1, m2, P3, m4, M5, P6, m7 | |||
| i, II, IIIam, IVsus, Vam, vi, VII | |||
|- | |||
| Illyrian | |||
| P1, m2, P3, m4, m5, P6, m7 | |||
| Iam, iisus, IIIam, iv, V, vi, VII | |||
|- | |||
| Lycian | |||
| P1, m2, d3, m4, m5, P6, m7 | |||
| Iam, ii, III, iv, V, VIam, VIIsus | |||
|} | |||
The Dalmation and Galatian modes on I, Bithynian and Pisidian have minor on I, Illyrian and Lycian have ambi on I, and Cicilian has sus on I. | |||
== References == | |||
<references/> | |||