4afdo: Difference between revisions
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| Line 7: | Line 7: | ||
! Cents | ! Cents | ||
! Ratio | ! Ratio | ||
! Decimal | |||
! Interval name | ! Interval name | ||
! Audio | ! Audio | ||
| Line 13: | Line 14: | ||
| 0 | | 0 | ||
| [[1/1]] | | [[1/1]] | ||
| 1.000 | |||
| perfect unison | | perfect unison | ||
| | | | ||
| Line 19: | Line 21: | ||
| 386.3 | | 386.3 | ||
| [[5/4]] | | [[5/4]] | ||
| 1.250 | |||
| just major third | | just major third | ||
| [[File:Jid_5_4_pluck_adu_dr220.mp3]] | | [[File:Jid_5_4_pluck_adu_dr220.mp3]] | ||
| Line 25: | Line 28: | ||
| 702.0 | | 702.0 | ||
| [[3/2]] | | [[3/2]] | ||
| 1.500 | |||
| just perfect fifth | | just perfect fifth | ||
| [[File:Jid_3_2_pluck_adu_dr220.mp3]] | | [[File:Jid_3_2_pluck_adu_dr220.mp3]] | ||
| Line 37: | Line 41: | ||
| 1200.0 | | 1200.0 | ||
| [[2/1]] | | [[2/1]] | ||
| 2.000 | |||
| perfect octave | | perfect octave | ||
| [[File:Jid_2_1_pluck_adu_dr220.mp3]] | | [[File:Jid_2_1_pluck_adu_dr220.mp3]] | ||
Revision as of 02:00, 2 March 2023
4ado is the arithmetic equal division of the octave into four parts of 1/4 each. Because 4 is a power of 2, 4ado corresponds to the 1st to 4th harmonics octave-reduced. The notes of 4ado create a harmonic seventh chord.
Intervals
| # | Cents | Ratio | Decimal | Interval name | Audio |
|---|---|---|---|---|---|
| 0 | 0 | 1/1 | 1.000 | perfect unison | |
| 1 | 386.3 | 5/4 | 1.250 | just major third | |
| 2 | 702.0 | 3/2 | 1.500 | just perfect fifth | |
| 3 | 968.8 | 7/4 | harmonic seventh | ||
| 4 | 1200.0 | 2/1 | 2.000 | perfect octave |