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Scale 2311: "Raga Kumarapriya"

Scale 2311: Raga Kumarapriya, 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

Carnatic
Raga Kumarapriya
Dozenal
Otrian

Analysis

Cardinality

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

5 (pentatonic)

Pitch Class Set

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

{0,1,2,8,11}

Forte Number

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

5-4

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: 3091

Hemitonia

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

3 (trihemitonic)

Cohemitonia

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

2 (dicohemitonic)

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.

4

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.

4

Prime Form

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

no
prime: 79

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.

[1, 1, 6, 3, 1]

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.

<3, 2, 2, 1, 1, 1>

Interval Spectrum

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

pmn2s2d3t

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

Spectra Variation

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

4.8

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.

no

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.

1.25

Polygon Perimeter

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

4.967

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".

Improper

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.

(20, 3, 32)

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
Diminished Triadsg♯°{8,11,2}000

The following pitch classes are not present in any of the common triads: {0,1}

Since there is only one common triad in this scale, there are no opportunities for parsimonious voice leading between triads.

Modes

Modes are the rotational transformation of this scale. Scale 2311 can be rotated to make 4 other scales. The 1st mode is itself.

2nd mode:
Scale 3203
Scale 3203: Etrian, Ian Ring Music TheoryEtrian
3rd mode:
Scale 3649
Scale 3649: Wupian, Ian Ring Music TheoryWupian
4th mode:
Scale 121
Scale 121: Asoian, Ian Ring Music TheoryAsoian
5th mode:
Scale 527
Scale 527: Dedian, Ian Ring Music TheoryDedian

Prime

The prime form of this scale is Scale 79

Scale 79Scale 79: Appian, Ian Ring Music TheoryAppian

Complement

The pentatonic modal family [2311, 3203, 3649, 121, 527] (Forte: 5-4) is the complement of the heptatonic modal family [223, 1987, 2159, 3041, 3127, 3611, 3853] (Forte: 7-4)

Inverse

The inverse of a scale is a reflection using the root as its axis. The inverse of 2311 is 3091

Scale 3091Scale 3091: Tisian, Ian Ring Music TheoryTisian

Enantiomorph

Only scales that are chiral will have an enantiomorph. Scale 2311 is chiral, and its enantiomorph is scale 3091

Scale 3091Scale 3091: Tisian, Ian Ring Music TheoryTisian

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> 2311       T0I <11,0> 3091
T1 <1,1> 527      T1I <11,1> 2087
T2 <1,2> 1054      T2I <11,2> 79
T3 <1,3> 2108      T3I <11,3> 158
T4 <1,4> 121      T4I <11,4> 316
T5 <1,5> 242      T5I <11,5> 632
T6 <1,6> 484      T6I <11,6> 1264
T7 <1,7> 968      T7I <11,7> 2528
T8 <1,8> 1936      T8I <11,8> 961
T9 <1,9> 3872      T9I <11,9> 1922
T10 <1,10> 3649      T10I <11,10> 3844
T11 <1,11> 3203      T11I <11,11> 3593
Abbrev Operation Result Abbrev Operation Result
T0M <5,0> 1201      T0MI <7,0> 421
T1M <5,1> 2402      T1MI <7,1> 842
T2M <5,2> 709      T2MI <7,2> 1684
T3M <5,3> 1418      T3MI <7,3> 3368
T4M <5,4> 2836      T4MI <7,4> 2641
T5M <5,5> 1577      T5MI <7,5> 1187
T6M <5,6> 3154      T6MI <7,6> 2374
T7M <5,7> 2213      T7MI <7,7> 653
T8M <5,8> 331      T8MI <7,8> 1306
T9M <5,9> 662      T9MI <7,9> 2612
T10M <5,10> 1324      T10MI <7,10> 1129
T11M <5,11> 2648      T11MI <7,11> 2258

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 2309Scale 2309: Ocuian, Ian Ring Music TheoryOcuian
Scale 2307Scale 2307: Ocoian, Ian Ring Music TheoryOcoian
Scale 2315Scale 2315: Orkian, Ian Ring Music TheoryOrkian
Scale 2319Scale 2319: Oduian, Ian Ring Music TheoryOduian
Scale 2327Scale 2327: Epalimic, Ian Ring Music TheoryEpalimic
Scale 2343Scale 2343: Tharimic, Ian Ring Music TheoryTharimic
Scale 2375Scale 2375: Aeolaptimic, Ian Ring Music TheoryAeolaptimic
Scale 2439Scale 2439: Pagian, Ian Ring Music TheoryPagian
Scale 2055Scale 2055: Tetratonic Chromatic 2, Ian Ring Music TheoryTetratonic Chromatic 2
Scale 2183Scale 2183: Nenian, Ian Ring Music TheoryNenian
Scale 2567Scale 2567: Puhian, Ian Ring Music TheoryPuhian
Scale 2823Scale 2823: Rulian, Ian Ring Music TheoryRulian
Scale 3335Scale 3335: Vadian, Ian Ring Music TheoryVadian
Scale 263Scale 263, Ian Ring Music Theory
Scale 1287Scale 1287: Hutian, Ian Ring Music TheoryHutian

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.