5afdo: Difference between revisions
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{{Infobox AFDO|steps=5}} | |||
[[File:5ado scale.wav|thumb]] | [[File:5ado scale.wav|thumb]] | ||
''' | '''5afdo''' ([[AFDO|arithmetic frequency division of the octave]]), or '''5odo''' ([[otonal division]] of the octave), divides the octave into five parts of 1/5 each. It is a superset of [[4afdo]] and a subset of [[6afdo]]. As a scale it may be known as [[Harmonic mode|mode 5 of the harmonic series]] or the [[Overtone scale #Over-n scales|Over-5]] scale. As 5 is a small odd number, this afdo does not contain a perfect fifth or any reasonable approximation to it over the root, and it is relatively poor for its size at creating traditional tonal music compared to 4afdo and 6afdo (again only if over the root, the modes have more to offer). | ||
== Intervals == | == Intervals == | ||
| Line 8: | Line 9: | ||
! Cents | ! Cents | ||
! Ratio | ! Ratio | ||
! Decimal | |||
! Interval name | ! Interval name | ||
! Audio | ! Audio | ||
| Line 14: | Line 16: | ||
| 0 | | 0 | ||
| [[1/1]] | | [[1/1]] | ||
| 1.0000 | |||
| perfect unison | | perfect unison | ||
| | | | ||
| Line 20: | Line 23: | ||
| 315.6 | | 315.6 | ||
| [[6/5]] | | [[6/5]] | ||
| 1.2000 | |||
| just minor third | | just minor third | ||
| [[File:Jid_6_5_pluck_adu_dr220.mp3]] | | [[File:Jid_6_5_pluck_adu_dr220.mp3]] | ||
| Line 26: | Line 30: | ||
| 582.5 | | 582.5 | ||
| [[7/5]] | | [[7/5]] | ||
| 1.40000 | |||
| narrow tritone | | narrow tritone | ||
| [[File:Jid_7_5_pluck_adu_dr220.mp3]] | | [[File:Jid_7_5_pluck_adu_dr220.mp3]] | ||
| Line 32: | Line 37: | ||
| 813.7 | | 813.7 | ||
| [[8/5]] | | [[8/5]] | ||
| 1.6000 | |||
| just minor sixth | | just minor sixth | ||
| [[File:Jid_8_5_pluck_adu_dr220.mp3]] | | [[File:Jid_8_5_pluck_adu_dr220.mp3]] | ||
| Line 38: | Line 44: | ||
| 1017.6 | | 1017.6 | ||
| [[9/5]] | | [[9/5]] | ||
| 1.8000 | |||
| just minor seventh | | just minor seventh | ||
| [[File:Jid_9_5_pluck_adu_dr220.mp3]] | | [[File:Jid_9_5_pluck_adu_dr220.mp3]] | ||
| Line 44: | Line 51: | ||
| 1200.0 | | 1200.0 | ||
| [[2/1]] | | [[2/1]] | ||
| 2.0000 | |||
| perfect octave | | perfect octave | ||
| [[File:Jid_2_1_pluck_adu_dr220.mp3]] | | [[File:Jid_2_1_pluck_adu_dr220.mp3]] | ||
|} | |} | ||
[[Category: | == Scala files == | ||
* [[Otonalpentad]] – this file starts with 8/5 | |||
[[Category:African music]] | |||
Latest revision as of 14:39, 23 April 2026
| ← 4afdo | 5afdo | 6afdo → |
5afdo (arithmetic frequency division of the octave), or 5odo (otonal division of the octave), divides the octave into five parts of 1/5 each. It is a superset of 4afdo and a subset of 6afdo. As a scale it may be known as mode 5 of the harmonic series or the Over-5 scale. As 5 is a small odd number, this afdo does not contain a perfect fifth or any reasonable approximation to it over the root, and it is relatively poor for its size at creating traditional tonal music compared to 4afdo and 6afdo (again only if over the root, the modes have more to offer).
Intervals
| # | Cents | Ratio | Decimal | Interval name | Audio |
|---|---|---|---|---|---|
| 0 | 0 | 1/1 | 1.0000 | perfect unison | |
| 1 | 315.6 | 6/5 | 1.2000 | just minor third | |
| 2 | 582.5 | 7/5 | 1.40000 | narrow tritone | |
| 3 | 813.7 | 8/5 | 1.6000 | just minor sixth | |
| 4 | 1017.6 | 9/5 | 1.8000 | just minor seventh | |
| 5 | 1200.0 | 2/1 | 2.0000 | perfect octave |
Scala files
- Otonalpentad – this file starts with 8/5