bigblok

Bigblok

Properties

Notes28
Period1200.0 ¢
Just7-limit
Source Mailing lists
Referencehttps://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_11915.html#11915
Thread1 scale
Tone Tone (¢) Step Step (¢)
49/48 36 49/48 36
21/20 84 36/35 49
15/14 119 50/49 35
49/45 147 686/675 28
10/9 182 50/49 35
8/7 231 36/35 49
7/6 267 49/48 36
6/5 316 36/35 49
49/40 351 49/48 36
9/7 435 360/343 84
21/16 471 49/48 36
4/3 498 64/63 27
49/36 534 49/48 36
7/5 583 36/35 49
10/7 617 50/49 35
72/49 666 36/35 49
3/2 702 49/48 36
32/21 729 64/63 27
14/9 765 49/48 36
49/30 849 21/20 84
5/3 884 50/49 35
12/7 933 36/35 49
7/4 969 49/48 36
9/5 1018 36/35 49
90/49 1053 50/49 35
28/15 1081 686/675 28
40/21 1116 50/49 35
2 1200 21/20 84

Parent scales

FileNotesMax diff (¢)
jove41 41 1.6
miracle41s 41 3.9
miracle3 41 4.1
miracle41 41 4.5
xen18-erlich-miracle-41 41 4.5
studwacko 41 4.5
mundeuc45 45 3.9
circle31 31 10.8
xen18-erlich-luna-31 31 10.9
xen18-erlich-cynder-31 31 11.0

Child scales

FileNotesMax diff (¢)
breed14 14 0.0
hjelmconv 10 0.0
porchrome1 7 0.0
xen10-wilson-purvi-03b-03 7 0.0
xen10-wilson-purvi-03b-04 7 0.0
xen10-wilson-purvi-03b-05 7 0.0
xen10-wilson-purvi-03b-06 7 0.0
xen10-wilson-purvi-03b-07 7 0.0
xen10-wilson-purvi-06b-04 7 0.0
xen15-chalmers-triadic-diamond-7-6 7 0.0
Mailing list post
From: Gene Ward Smith (2005-04-08)
Subject: 7-limit planar lattice via fractional monzos: attn Monz

This 7-limit 2401/2400 lattice can be approached via Joe's favorite
fractional monzos, and from that I think he could figure out how to do
planar 7-limit lattice diagrams pretty easily. If we represent a 7 by
(2400)^(1/4), we are representing it by |5/4 1/4 1/2>. My lattice
business is simply what you get if you use this for 7s, and stick the
result inside the plane containing the 5-limit lattice: the pitch
class for 3 is [1,0], for 5 is [0,1], and for 7 is [1/4,1/2].

From this, given any 5-limit Fokker block, you can find the
corresponding 7-limit object by adding all the 7-limit lattice
elements which fall in the range of the block. A Fokker block obtained
from 25/24 and 81/80 is 1, 10/9, 6/5, 4/3, 3/2, 5/3, 9/5. If I use the
same range on the 7-limit planar lattice, I end up with the following
scale of 28 notes, which as expected makes use of 2401/2400
approximations to obtain extra 7-limit harmony.

! bigblok.scl
Bigblok
28
!
49/48
21/20
15/14
49/45
10/9
8/7
7/6
6/5
49/40
9/7
21/16
4/3
49/36
7/5
10/7
72/49
3/2
32/21
14/9
49/30
5/3
12/7
7/4
9/5
90/49
28/15
40/21
2
Full thread (1 messages)
From: Gene Ward Smith (2005-04-08)
Subject: 7-limit planar lattice via fractional monzos: attn Monz

This 7-limit 2401/2400 lattice can be approached via Joe's favorite
fractional monzos, and from that I think he could figure out how to do
planar 7-limit lattice diagrams pretty easily. If we represent a 7 by
(2400)^(1/4), we are representing it by |5/4 1/4 1/2>. My lattice
business is simply what you get if you use this for 7s, and stick the
result inside the plane containing the 5-limit lattice: the pitch
class for 3 is [1,0], for 5 is [0,1], and for 7 is [1/4,1/2].

From this, given any 5-limit Fokker block, you can find the
corresponding 7-limit object by adding all the 7-limit lattice
elements which fall in the range of the block. A Fokker block obtained
from 25/24 and 81/80 is 1, 10/9, 6/5, 4/3, 3/2, 5/3, 9/5. If I use the
same range on the 7-limit planar lattice, I end up with the following
scale of 28 notes, which as expected makes use of 2401/2400
approximations to obtain extra 7-limit harmony.

! bigblok.scl
Bigblok
28
!
49/48
21/20
15/14
49/45
10/9
8/7
7/6
6/5
49/40
9/7
21/16
4/3
49/36
7/5
10/7
72/49
3/2
32/21
14/9
49/30
5/3
12/7
7/4
9/5
90/49
28/15
40/21
2

Raw file

! bigblok.scl
Bigblok
28
!
49/48
21/20
15/14
49/45
10/9
8/7
7/6
6/5
49/40
9/7
21/16
4/3
49/36
7/5
10/7
72/49
3/2
32/21
14/9
49/30
5/3
12/7
7/4
9/5
90/49
28/15
40/21
2
!
! https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_11915.html#11915
!
! [info]
! source = Mailing lists
! file = tuning-math/messages/yahoo_tuning-math_messages_api_raw_9945-12429.json
! topic_id = 11915
! msg_id = 11915