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Scale 1757: "Kunian"

Scale 1757: Kunian, Ian Ring Music Theory

Bracelet Diagram

The bracelet shows tones that are in this scale, starting from the top (12 o'clock), going clockwise in ascending semitones. The "i" icon marks imperfect tones that do not have a tone a fifth above. Dotted lines indicate axes of symmetry.

Tonnetz Diagram

Tonnetz diagrams are popular in Neo-Riemannian theory. Notes are arranged in a lattice where perfect 5th intervals are from left to right, major third are northeast, and major 6th intervals are northwest. Other directions are inverse of their opposite. This diagram helps to visualize common triads (they're triangles) and circle-of-fifth relationships (horizontal lines).

Common Names

Dozenal
Kunian

Analysis

Cardinality

Cardinality is the count of how many pitches are in the scale.

8 (octatonic)

Pitch Class Set

The tones in this scale, expressed as numbers from 0 to 11

{0,2,3,4,6,7,9,10}

Forte Number

A code assigned by theorist Allen Forte, for this pitch class set and all of its transpositional (rotation) and inversional (reflection) transformations.

8-27

Rotational Symmetry

Some scales have rotational symmetry, sometimes known as "limited transposition". If there are any rotational symmetries, these are the intervals of periodicity.

none

Reflection Axes

If a scale has an axis of reflective symmetry, then it can transform into itself by inversion. It also implies that the scale has Ridge Tones. Notably an axis of reflection can occur directly on a tone or half way between two tones.

none

Palindromicity

A palindromic scale has the same pattern of intervals both ascending and descending.

no

Chirality

A chiral scale can not be transformed into its inverse by rotation. If a scale is chiral, then it has an enantiomorph.

yes
enantiomorph: 1901

Hemitonia

A hemitone is two tones separated by a semitone interval. Hemitonia describes how many such hemitones exist.

4 (multihemitonic)

Cohemitonia

A cohemitone is an instance of two adjacent hemitones. Cohemitonia describes how many such cohemitones exist.

1 (uncohemitonic)

Imperfections

An imperfection is a tone which does not have a perfect fifth above it in the scale. This value is the quantity of imperfections in this scale.

3

Modes

Modes are the rotational transformations of this scale. This number does not include the scale itself, so the number is usually one less than its cardinality; unless there are rotational symmetries then there are even fewer modes.

7

Prime Form

Describes if this scale is in prime form, using the Rahn/Ring formula.

no
prime: 1463

Generator

Indicates if the scale can be constructed using a generator, and an origin.

none

Deep Scale

A deep scale is one where the interval vector has 6 different digits.

no

Interval Structure

Defines the scale as the sequence of intervals between one tone and the next.

[2, 1, 1, 2, 1, 2, 1, 2]

Interval Vector

Describes the intervallic content of the scale, read from left to right as the number of occurences of each interval size from semitone, up to six semitones.

<4, 5, 6, 5, 5, 3>

Interval Spectrum

The same as the Interval Vector, but expressed in a syntax used by Howard Hanson.

p5m5n6s5d4t3

Distribution Spectra

Describes the specific interval sizes that exist for each generic interval size. Each generic <g> has a spectrum {n,...}. The Spectrum Width is the difference between the highest and lowest values in each spectrum.

<1> = {1,2}
<2> = {2,3,4}
<3> = {4,5}
<4> = {5,6,7}
<5> = {7,8}
<6> = {8,9,10}
<7> = {10,11}

Spectra Variation

Determined by the Distribution Spectra; this is the sum of all spectrum widths divided by the scale cardinality.

1.25

Maximally Even

A scale is maximally even if the tones are optimally spaced apart from each other.

no

Maximal Area Set

A scale is a maximal area set if a polygon described by vertices dodecimetrically placed around a circle produces the maximal interior area for scales of the same cardinality. All maximally even sets have maximal area, but not all maximal area sets are maximally even.

yes

Interior Area

Area of the polygon described by vertices placed for each tone of the scale dodecimetrically around a unit circle, ie a circle with radius of 1.

2.732

Polygon Perimeter

Perimeter of the polygon described by vertices placed for each tone of the scale dodecimetrically around a unit circle.

6.071

Myhill Property

A scale has Myhill Property if the Interval Spectra has exactly two specific intervals for every generic interval.

no

Balanced

A scale is balanced if the distribution of its tones would satisfy the "centrifuge problem", ie are placed such that it would balance on its centre point.

no

Ridge Tones

Ridge Tones are those that appear in all transpositions of a scale upon the members of that scale. Ridge Tones correspond directly with axes of reflective symmetry.

none

Propriety

Also known as Rothenberg Propriety, named after its inventor. Propriety describes whether every specific interval is uniquely mapped to a generic interval. A scale is either "Proper", "Strictly Proper", or "Improper".

Proper

Heteromorphic Profile

Defined by Norman Carey (2002), the heteromorphic profile is an ordered triple of (c, a, d) where c is the number of contradictions, a is the number of ambiguities, and d is the number of differences. When c is zero, the scale is Proper. When a is also zero, the scale is Strictly Proper.

(0, 24, 103)

Common Triads

These are the common triads (major, minor, augmented and diminished) that you can create from members of this scale.

* Pitches are shown with C as the root

Triad TypeTriad*Pitch ClassesDegreeEccentricityCloseness Centrality
Major TriadsC{0,4,7}342.15
D{2,6,9}342.23
D♯{3,7,10}441.85
Minor Triadscm{0,3,7}441.92
d♯m{3,6,10}441.92
gm{7,10,2}242.23
am{9,0,4}342.23
Augmented TriadsD+{2,6,10}342.15
Diminished Triads{0,3,6}242.15
d♯°{3,6,9}242.31
{4,7,10}242.23
f♯°{6,9,0}242.31
{9,0,3}242.31
Parsimonious Voice Leading Between Common Triads of Scale 1757. Created by Ian Ring ©2019 cm cm c°->cm d#m d#m c°->d#m C C cm->C D# D# cm->D# cm->a° C->e° am am C->am D D D+ D+ D->D+ d#° d#° D->d#° f#° f#° D->f#° D+->d#m gm gm D+->gm d#°->d#m d#m->D# D#->e° D#->gm f#°->am a°->am

view full size

Above is a graph showing opportunities for parsimonious voice leading between triads*. Each line connects two triads that have two common tones, while the third tone changes by one generic scale step.

Diameter4
Radius4
Self-Centeredyes

Modes

Modes are the rotational transformation of this scale. Scale 1757 can be rotated to make 7 other scales. The 1st mode is itself.

2nd mode:
Scale 1463
Scale 1463: Ugrian, Ian Ring Music TheoryUgrianThis is the prime mode
3rd mode:
Scale 2779
Scale 2779: Shostakovich, Ian Ring Music TheoryShostakovich
4th mode:
Scale 3437
Scale 3437: Vopian, Ian Ring Music TheoryVopian
5th mode:
Scale 1883
Scale 1883: Lomian, Ian Ring Music TheoryLomian
6th mode:
Scale 2989
Scale 2989: Bebop Minor, Ian Ring Music TheoryBebop Minor
7th mode:
Scale 1771
Scale 1771: Kuwian, Ian Ring Music TheoryKuwian
8th mode:
Scale 2933
Scale 2933: Sizian, Ian Ring Music TheorySizian

Prime

The prime form of this scale is Scale 1463

Scale 1463Scale 1463: Ugrian, Ian Ring Music TheoryUgrian

Complement

The octatonic modal family [1757, 1463, 2779, 3437, 1883, 2989, 1771, 2933] (Forte: 8-27) is the complement of the tetratonic modal family [293, 593, 649, 1097] (Forte: 4-27)

Inverse

The inverse of a scale is a reflection using the root as its axis. The inverse of 1757 is 1901

Scale 1901Scale 1901: Ionidyllic, Ian Ring Music TheoryIonidyllic

Enantiomorph

Only scales that are chiral will have an enantiomorph. Scale 1757 is chiral, and its enantiomorph is scale 1901

Scale 1901Scale 1901: Ionidyllic, Ian Ring Music TheoryIonidyllic

Transformations:

In the abbreviation, the subscript number after "T" is the number of semitones of tranposition, "M" means the pitch class is multiplied by 5, and "I" means the result is inverted. Operation is an identical way to express the same thing; the syntax is <a,b> where each tone of the set x is transformed by the equation y = ax + b

Abbrev Operation Result Abbrev Operation Result
T0 <1,0> 1757       T0I <11,0> 1901
T1 <1,1> 3514      T1I <11,1> 3802
T2 <1,2> 2933      T2I <11,2> 3509
T3 <1,3> 1771      T3I <11,3> 2923
T4 <1,4> 3542      T4I <11,4> 1751
T5 <1,5> 2989      T5I <11,5> 3502
T6 <1,6> 1883      T6I <11,6> 2909
T7 <1,7> 3766      T7I <11,7> 1723
T8 <1,8> 3437      T8I <11,8> 3446
T9 <1,9> 2779      T9I <11,9> 2797
T10 <1,10> 1463      T10I <11,10> 1499
T11 <1,11> 2926      T11I <11,11> 2998
Abbrev Operation Result Abbrev Operation Result
T0M <5,0> 3917      T0MI <7,0> 1631
T1M <5,1> 3739      T1MI <7,1> 3262
T2M <5,2> 3383      T2MI <7,2> 2429
T3M <5,3> 2671      T3MI <7,3> 763
T4M <5,4> 1247      T4MI <7,4> 1526
T5M <5,5> 2494      T5MI <7,5> 3052
T6M <5,6> 893      T6MI <7,6> 2009
T7M <5,7> 1786      T7MI <7,7> 4018
T8M <5,8> 3572      T8MI <7,8> 3941
T9M <5,9> 3049      T9MI <7,9> 3787
T10M <5,10> 2003      T10MI <7,10> 3479
T11M <5,11> 4006      T11MI <7,11> 2863

The transformations that map this set to itself are: T0

Nearby Scales:

These are other scales that are similar to this one, created by adding a tone, removing a tone, or moving one note up or down a semitone.

Scale 1759Scale 1759: Pylygic, Ian Ring Music TheoryPylygic
Scale 1753Scale 1753: Hungarian Major, Ian Ring Music TheoryHungarian Major
Scale 1755Scale 1755: Octatonic, Ian Ring Music TheoryOctatonic
Scale 1749Scale 1749: Acoustic, Ian Ring Music TheoryAcoustic
Scale 1741Scale 1741: Lydian Diminished, Ian Ring Music TheoryLydian Diminished
Scale 1773Scale 1773: Blues Scale II, Ian Ring Music TheoryBlues Scale II
Scale 1789Scale 1789: Blues Enneatonic II, Ian Ring Music TheoryBlues Enneatonic II
Scale 1693Scale 1693: Dogian, Ian Ring Music TheoryDogian
Scale 1725Scale 1725: Minor Bebop, Ian Ring Music TheoryMinor Bebop
Scale 1629Scale 1629: Synian, Ian Ring Music TheorySynian
Scale 1885Scale 1885: Saptyllic, Ian Ring Music TheorySaptyllic
Scale 2013Scale 2013: Mocrygic, Ian Ring Music TheoryMocrygic
Scale 1245Scale 1245: Lathian, Ian Ring Music TheoryLathian
Scale 1501Scale 1501: Stygyllic, Ian Ring Music TheoryStygyllic
Scale 733Scale 733: Donian, Ian Ring Music TheoryDonian
Scale 2781Scale 2781: Gycryllic, Ian Ring Music TheoryGycryllic
Scale 3805Scale 3805: Moptygic, Ian Ring Music TheoryMoptygic

This scale analysis was created by Ian Ring, Canadian Composer of works for Piano, and total music theory nerd. Scale notation generated by VexFlow, graph visualization by Graphviz, and MIDI playback by MIDI.js. All other diagrams and visualizations are © Ian Ring. Some scale names used on this and other pages are ©2005 William Zeitler (http://allthescales.org) used with permission.

Pitch spelling algorithm employed here is adapted from a method by Uzay Bora, Baris Tekin Tezel, and Alper Vahaplar. (An algorithm for spelling the pitches of any musical scale) Contact authors Patent owner: Dokuz Eylül University, Used with Permission. Contact TTO

Tons of background resources contributed to the production of this summary; for a list of these peruse this Bibliography. Special thanks to Richard Repp for helping with technical accuracy, and George Howlett for assistance with the Carnatic ragas.