Chord - music-tech-box

Chord

和音。

同時に鳴らす複数の音は、その構成音の音程によって性質を変える。

diatonic chord = 固有和音

non-diatonic chord = 準固有和音

副次固有和音

準副次固有和音

表記

V7のように書けば、Dominant 7th chord（構成音数は４）を表す

V9のように書けば、Dominant 9th chord（構成音数は５）を表す

Harmonic functionでは

たとえばメジャーキーにおけるII（C:II = Dm）は、マイナーコードであることは決まっているため、わざわざIImとは書かずIIと書く。

実際わかりやすいからIImも書きますchant.icon

種類

table:Chord

Chord Formula 半音距離

Major chord Root, 3rd, 完全5度(P5) 0 4 7

Major 6th chord Root, 3rd, 完全5度(P5), 6th 0 4 7 9

Major 7th chord Root, 3rd, 完全5度(P5), 7th 0 4 7 11

Major 9th chord Root, 3rd, 完全5度(P5), 7th, 9th 0 4 7 11 14

Major add 9th chord Root, 3rd, 完全5度(P5), 9th 0 4 7 11 14

Dominant chord Root, 3rd, 完全5度(P5) 0 4 7

Dominant 7th chord Root, 3rd, 完全5度(P5), ♭7th 0 4 7 10

Dominant 9th chord Root, 3rd, 完全5度(P5), ♭7th, 9th 0 4 7 10 14

Dominant 11th chord Root, 3rd, 完全5度(P5), ♭7th, 9th, 11th 0 4 7 10 14 17

Dominant 13th chord Root, 3rd, 完全5度(P5), ♭7th, 9th, 11th, 13th 0 4 7 10 14 17 21

Dominant ♭13th chord Root, 3rd, 完全5度(P5), ♭7th, 9th, 11th, ♭13th 0 4 7 10 14 17 20

augmented chord Root, 3rd, #5th 0 4 8

augmented 6th chord Root, 3rd, #5th,6th 0 4 8 9

augmented 7th chord Root, 3rd, #5th, ♭7th 0 4 8 10

augmented Major 7th chord Root, 3rd, #5th, 7th 0 4 8 11

minor chord Root, ♭3rd, 完全5度(P5) 0 3 7

minor 6th chord Root, ♭3rd, 完全5度(P5), 6th 0 3 7 9

minor 6th add 9th chord Root, ♭3rd, 完全5度(P5), 6th, 9th 0 3 7 9 14

minor 7th chord Root, ♭3rd, 完全5度(P5),♭7th 0 3 7 10

minor major 7th chord Root, ♭3rd, 完全5度(P5), 7th 0 3 7 11

half-diminished chord Root, ♭3rd, ♭5th 0 3 6

half-diminshed 7th chord Root, ♭3rd, ♭5th, ♭7th 0 3 6 10

Diminished chord Root, ♭3rd, ♭5th 0 3 6

diminished 7th chord Root, ♭3rd, ♭5th,♭♭7th 0 3 6 9

Suspended 4th chord 0 5 7

Suspended 4th 7th chord 0 5 7 10

Suspended 2nd chord Root, 2度, 完全5度(P5) 0 2 7

その他の和音↓

第５音の下方変位

altered dominant

Neapolitan Sixth

エオリアの7度

ドリアの6度