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Porcupine intervals: Difference between revisions

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This is one possible naming and organization system for intervals of [[porcupine]] temperament. It is based on the Porcupine[7] scale, or equivalently on the [[val]] {{val| 7 11 16 }}.
These are the intervals found in porcupine temperament.


In [[22edo]], all the neighboring intervals on this chart that are shown as about 20 cents apart are actually the same. For example, the augmented third (9/7) and the diminished fourth (14/11) are both the same interval (8\22) in 22edo. This corresponds to 99/98 being tempered out in 22edo.
In [[22edo]], all the neighboring intervals on this chart that are shown as about 20 cents apart are actually the same. For example, the augmented third (9/7) and the diminished fourth (14/11) are both the same interval (8\22) in 22edo. This corresponds to 99/98 being tempered out in 22edo.
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{| class="wikitable right-2 center-4"
{| class="wikitable right-2 center-4"
|-
|-
! Name
!Name (zarlino)
! Name (heptatonic MOS)
! Size*
! Size*
! Ratio
! Ratio
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! Comments
! Comments
|-
|-
!
! colspan="4" | Unisons
! colspan="4" | Unisons
!  
!  
|-
|-
|Perfect unison (P1)
| Perfect unison (P1)
| Perfect unison (P1)
| 0.0
| 0.0
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|  
|  
|-
|-
|Augmented unison (A1)
| Augmented unison (A1)
| Augmented unison (A1)
| 61.1
| 61.1
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| [[Cluster temperament #porcupine(fish)|And other ratios, of course]]
| [[Cluster temperament #porcupine(fish)|And other ratios, of course]]
|-
|-
!
! colspan="4" | Seconds
! colspan="4" | Seconds
!  
!  
|-
|-
|Minor second (m2)
| Diminished second (d2)
| Diminished second (d2)
| 101.6
| 101.6
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|  
|  
|-
|-
|Neutral second (n2)
| Perfect second (P2)
| Perfect second (P2)
| 162.7
| 162.7
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| Rather than "minor 2nd"
| Rather than "minor 2nd"
|-
|-
|Major second (M2)
| Augmented second (A2)
| Augmented second (A2)
| 223.8
| 223.8
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| Rather than "major 2nd"
| Rather than "major 2nd"
|-
|-
|Augmented second (A2)
| Double-augmented second (AA2)
| Double-augmented second (AA2)
| 284.9
| 284.9
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| Also "subminor third"
| Also "subminor third"
|-
|-
!
! colspan="4" | Thirds
! colspan="4" | Thirds
!  
!  
|-
|-
|Wolf third (w3)
| Diminished third (d3)
| Diminished third (d3)
| 264.3
| 264.3
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| Also "supermajor second"
| Also "supermajor second"
|-
|-
|Minor third (m3)
| Minor third (m3)
| Minor third (m3)
| 325.4
| 325.4
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|  
|  
|-
|-
|Major third (M3)
| Major third (M3)
| Major third (M3)
| 386.5
| 386.5
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|  
|  
|-
|-
|Augmented third (A3)
| Augmented third (A3)
| Augmented third (A3)
| 447.6
| 447.6
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| Also "subminor fourth"
| Also "subminor fourth"
|-
|-
!
! colspan="4" | Fourths
! colspan="4" | Fourths
!  
!  
|-
|-
|Diminished fourth (d4)
| Diminished fourth (d4)
| Diminished fourth (d4)
| 427.0
| 427.0
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| Also "supermajor third"
| Also "supermajor third"
|-
|-
|Perfect fourth (P4)
| Minor fourth (m4)
| Minor fourth (m4)
| 488.1
| 488.1
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| Rather than "perfect fourth"
| Rather than "perfect fourth"
|-
|-
|Wolf fourth (w4)
| Major fourth (M4)
| Major fourth (M4)
| 549.2
| 549.2
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|  
|  
|-
|-
|Augmented fourth (A4)
| Augmented fourth (A4)
| Augmented fourth (A4)
| 610.3
| 610.3
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| Also "subminor fifth"
| Also "subminor fifth"
|-
|-
!
! colspan="4" | Fifths
! colspan="4" | Fifths
!  
!  
|-
|-
|Diminished fifth (d5)
| Diminished fifth (d5)
| Diminished fifth (d5)
| 589.7
| 589.7
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| Also "supermajor fourth"
| Also "supermajor fourth"
|-
|-
|Wolf fifth (w5)
| Minor fifth (m5)
| Minor fifth (m5)
| 650.8
| 650.8
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|  
|  
|-
|-
|Perfect fifth (P5)
| Major fifth (M5)
| Major fifth (M5)
| 711.9
| 711.9
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| Rather than "perfect fifth"
| Rather than "perfect fifth"
|-
|-
|Augmented fifth (A5)
| Augmented fifth (A5)
| Augmented fifth (A5)
| 773.0
| 773.0
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| Also "subminor sixth"
| Also "subminor sixth"
|-
|-
!
! colspan="4" | Sixths
! colspan="4" | Sixths
!  
!  
|-
|-
|Diminished sixth (d6)
| Diminished sixth (d6)
| Diminished sixth (d6)
| 752.4
| 752.4
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| Also "supermajor fifth"
| Also "supermajor fifth"
|-
|-
|Minor sixth (m6)
| Minor sixth (m6)
| Minor sixth (m6)
| 813.5
| 813.5
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|  
|  
|-
|-
|Major sixth (M6)
| Major sixth (M6)
| Major sixth (M6)
| 874.6
| 874.6
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|  
|  
|-
|-
|Wolf sixth (W6)
| Augmented sixth (A6)
| Augmented sixth (A6)
| 935.7
| 935.7
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| Also "subminor seventh"
| Also "subminor seventh"
|-
|-
!
! colspan="4" | Sevenths
! colspan="4" | Sevenths
!  
!  
|-
|-
|Diminished seventh (d7)
| Double-diminished seventh (dd7)
| Double-diminished seventh (dd7)
| 915.1
| 915.1
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| Also "supermajor sixth"
| Also "supermajor sixth"
|-
|-
|Minor seventh (m7)
| Diminished seventh (d7)
| Diminished seventh (d7)
| 976.2
| 976.2
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| Rather than "minor 7th"
| Rather than "minor 7th"
|-
|-
|Neutral seventh (n7)
| Perfect seventh (P7)
| Perfect seventh (P7)
| 1037.3
| 1037.3
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| Rather than "major 7th"
| Rather than "major 7th"
|-
|-
|Major seventh (M7)
| Augmented seventh (A7)
| Augmented seventh (A7)
| 1098.4
| 1098.4
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|  
|  
|-
|-
!
! colspan="4" | Octaves
! colspan="4" | Octaves
!  
!  
|-
|-
|Diminished octave (d8)
| Diminished octave (d8)
| Diminished octave (d8)
| 1138.9
| 1138.9
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|  
|  
|-
|-
|Perfect octave (P8)
| Perfect octave (P8)
| Perfect octave (P8)
| 1200.0
| 1200.0
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|  
|  
|-
|-
|Augmented octave (A8)
| Augmented octave (A8)
| Augmented octave (A8)
| 1261.1
| 1261.1
Retrieved from "https://en.xen.wiki/w/Porcupine_intervals"