Triads
| Ratios
|
Name
|
| 2:3:4 |
Power chord / Fifth chord
|
| 3:5:7 |
"major triad of the Bohlen–Pierce scale"
|
| 4:5:6 |
Major chord
|
| 5:6:7 |
Perfect diminished chord
|
| 6:7:9 |
"The lowest numbers producing a minor triad in the harmonic series (McIntyre 2002)"
|
| 6:8:9 |
Suspended fourth chord
|
| 8:9:12 |
Suspended second chord
|
| 10:12:15 |
Minor chord "the first occurrence of a minor triad in the harmonic series"
|
| 16:19:24 |
False minor triad?
|
| 16:20:25 |
Augmented triad
|
| 27:32:40 |
Supertonic triad?
|
| 45:54:64 |
Diminished triad
|
| 54:64:243 |
Pythagorean minor triad
|
| 64:81:96 |
Pythagorean minor triad
|
Tetrads
| 3:5:7:9 |
"the primary tetrad in the Bohlen-Pierce tuning system"
|
| 3:5:9:15 |
"anomalous saturated suspension" http://x31eq.com/ass.htm
|
| 3:7:9:21 |
"anomalous saturated suspension"
|
| 4:5:6:7 |
harmonic seventh chord
|
| 4:5:6:18 |
major seventh chord
|
| 5:6:7:9 |
half-diminished seventh
|
| 8:9:10:12 |
mu major chord
|
| 8:10:12:15 |
major/major seventh chord
|
| 10:12:15:18 |
minor seventh
|
| 12:16:17:18 |
dream chord
|
| 20:25:30:36 |
dominant seventh chord
|
| 25:30:36:45 |
half-diminished seventh
|
| 40:48:60:75 |
minor/major seventh chord
|
| 80:100:125:144 |
augmented seventh chord
|
Pentads
4:5:6:7:9 Dominant ninth chord
8:10:12:14:17 Dominant minor ninth chord
20:25:30:36:48 Dominant seventh sharp ninth chord
Hexads