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 cent chord on C, and a P1-m2-m4-m5 chord on B and D. We need names for these chords, and once again we can borrow from diatonic:
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 cent 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.


''Rewrite: This is not the best construction. Chords are better constructed as a chain of three fourths (4/3 or 11/8) or fifths (3/2 or 16/11).''
We need names for these chords, and once again we can borrow some from diatonic:


{| class="wikitable"
{| class="wikitable"
|+ Mosh chord names
|+ Mosh chord names
! Chord
! colspan=2 |Chord
! Name
! rowspan=2 |Name
|-
! Root up
! Chain of 5ths
|-
|-
| P1-M2-M4-M5
| P1-M2-M4-M5
| M4-P1-M5-M2
| '''Major / M'''
| '''Major / M'''
|-
|-
| P1-m2-m4-M5
| P1-m2-m4-M5
| m4-P1-M5-m2
| '''Minor / m'''
| '''Minor / m'''
|-
|-
| P1-M2-m4-M5
| P1-M2-m4-M5
| m4-P1-M5-M2
| '''Suspended / sus'''
| '''Suspended / sus'''
|-
|-
| P1-m2-m4-m5
| P1-m2-m4-m5
| ''Placeholder''
| m4-P1-m5-m2
| '''Ambi / a''' (Placeholder)
|}
|}