Porcupine/Chords: Difference between revisions

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Though we're used to thinking of 4:5:6 as the definitive "major chord", with all inversions coming from that, there is nothing definitive about calling these lists below "chord" or "inversion". That's just the way the generators came out.  
Though we're used to thinking of 4:5:6 as the definitive "major chord", with all inversions coming from that, there is nothing definitive about calling these lists below "chord" or "inversion". That's just the way the generators came out.  


The '''bolded''' inversions are named using [[ups and downs]] as applied to [[Pergen|pergens]]. The genchain of intervals is
The '''bolded''' inversions are named using [[ups and downs]] as described on the [[Pergen|pergens]] page. The pergen is (P8, P4/3) third-of-a-4th, #7 in the [http://tallkite.com/misc_files/notation%20guide%20for%20rank-2%20pergens.pdf notation guide for rank-2 pergens]. One up is -7 generators, octave-reduced. The generator is vM2 = 167¢ - c/3, where c = the amount in cents the tempered fifth exceeds 700¢. ^1 = 33¢ + 2.33c. The enharmonic interval is v<sup>3</sup>A1, thus ^<sup>3</sup>C = C#.
 
{| class="wikitable"
... <u>M3</u> vA4 ^5 <u>M6</u> vM7 ^1 <u>M2</u> vM3 ^4 <u>P5</u> vM6 ^m7 '''<u>P1</u>''' vM2 ^m3 <u>P4</u> v5 ^m6 <u>m7</u> v8 ^m2 <u>m3</u> v4 ^d5 <u>m6</u> ...
|+Porcupine's genchain
!Genspan
!0
!1
!2
!3
!4
!5
!6
!7
!8
!9
!10
!11
!12
!13
!14
|-
!Cents (22edo)
|0
|164
|327
|491
|655
|818
|982
|1145
|109
|273
|436
|600
|764
|927
|1091
|-
!Ratio
|1/1
|10/9
11/10
|6/5
11/9
|4/3
|16/11
|8/5
|16/9
7/4
|14/25
160/81
|16/15
21/20
|7/6
|14/11
|7/5
|14/9
|
|28/15
|-
!Interval
|'''P1'''
|vM2
|^m3
|'''P4'''
|v5
|^m6
|'''m7'''
|v8
|^m2
|'''m3'''
|v4
|^b5
|'''m6'''
|vm7
|^d8
|-
!Note
(in C)
|'''C'''
|vD
|^Eb
|'''F'''
|vG
|^Ab
|'''Bb'''
|vC
|^Db
|'''Eb'''
|vF
|^Gb
|'''Ab'''
|vBb
|^Cb
|}
'''''TODO: complete the tables'''''


== Triads ==
== Triads ==
Line 29: Line 121:
| 1/1-12/11-20/11
| 1/1-12/11-20/11
| 1/1-5/3-11/6
| 1/1-5/3-11/6
|^m,v9no5
|^mv9no5
|-
|-
| 0-1-3
| 0-1-3
Line 75: Line 167:
| otonal
| otonal
| 1/1-11/10-8/5
| 1/1-11/10-8/5
| 1/1-16/11-20/11
| '''1/1-16/11-9/5'''
| 1/1-5/4-11/8
| 1/1-5/4-11/8
|
|^7(v5)no3
|-
|-
| 0-2-5
| 0-2-5
Line 115: Line 207:
| otonal
| otonal
| 1/1-11/9-16/9
| 1/1-11/9-16/9
| 1/1-16/11-18/11
| 1/1-16/11-5/3
| 1/1-9/8-11/8
| '''1/1-9/8-11/8'''
|
|sus2(v5)
|-
|-
| 0-3-6
| 0-3-6
Line 131: Line 223:
| utonal
| utonal
| 1/1-16/11-16/9
| 1/1-16/11-16/9
| 1/1-11/9-11/8
| '''1/1-11/9-11/8'''
| 1/1-9/8-18/11
| 1/1-9/8-5/3
|
|^m^4no5
|-
|-
| 0-5-6
| 0-5-6
Line 147: Line 239:
| otonal
| otonal
| 1/1-16/15-6/5
| 1/1-16/15-6/5
| 1/1-9/8-15/8
| '''1/1-9/8-15/8'''
| 1/1-5/3-16/9
| 1/1-5/3-16/9
|
|vM9no35
|-
|-
| 0-3-8
| 0-3-8
Line 180: Line 272:
| 1/1-16/15-16/9
| 1/1-16/15-16/9
| 1/1-5/3-15/8
| 1/1-5/3-15/8
| 1/1-9/8-6/5
| '''1/1-9/8-6/5'''
|
|^m,9no5
|-
|-
| 0-1-9
| 0-1-9
Line 523: Line 615:
| 1/1-11/10-6/5-9/5   
| 1/1-11/10-6/5-9/5   
| 1/1-12/11-18/11-20/11  
| 1/1-12/11-18/11-20/11  
| 1/1-3/2-5/3-11/6
| '''1/1-3/2-5/3-11/6'''
|
|v6^7no3
|-
|-
| 0-1-2-4
| 0-1-2-4
Line 578: Line 670:
| '''1/1-6/5-3/2-9/5'''
| '''1/1-6/5-3/2-9/5'''
| '''1/1-5/4-3/2-5/3'''
| '''1/1-5/4-3/2-5/3'''
|v6 or ^m7
|v6 <u>or</u> ^m7
|-
|-
|0-2-4-5
|0-2-4-5
|1-6/5-16/11-8/5
|
|
|
|1-6/5-16/11-8/5
|
|
|
|
|