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Scale 3455: "Ryptyllian"

Scale 3455: Ryptyllian, 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

Zeitler
Ryptyllian
Dozenal
Vozian

Analysis

Cardinality

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

10 (decatonic)

Pitch Class Set

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

{0,1,2,3,4,5,6,8,10,11}

Forte Number

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

10-2

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.

[2]

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.

no

Hemitonia

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

8 (multihemitonic)

Cohemitonia

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

7 (multicohemitonic)

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.

2

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.

9

Prime Form

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

no
prime: 1535

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, 1, 1, 1, 1, 2, 2, 1, 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.

<8, 9, 8, 8, 8, 4>

Interval Spectrum

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

p8m8n8s9d8t4

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

Spectra Variation

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

1.6

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.

2.866

Polygon Perimeter

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

6.141

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.

[4]

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.

(56, 147, 228)

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♯{1,5,8}452.6
E{4,8,11}352.7
F♯{6,10,1}252.8
G♯{8,0,3}352.7
A♯{10,2,5}452.6
B{11,3,6}452.6
Minor Triadsc♯m{1,4,8}352.7
d♯m{3,6,10}252.8
fm{5,8,0}352.7
g♯m{8,11,3}452.6
a♯m{10,1,5}452.6
bm{11,2,6}452.6
Augmented TriadsC+{0,4,8}452.6
D+{2,6,10}452.6
Diminished Triads{0,3,6}252.9
{2,5,8}252.8
{5,8,11}253
g♯°{8,11,2}252.8
a♯°{10,1,4}252.9
{11,2,5}252.8
Parsimonious Voice Leading Between Common Triads of Scale 3455. Created by Ian Ring ©2019 G# G# c°->G# B B c°->B C+ C+ c#m c#m C+->c#m E E C+->E fm fm C+->fm C+->G# C# C# c#m->C# a#° a#° c#m->a#° C#->d° C#->fm a#m a#m C#->a#m A# A# d°->A# D+ D+ d#m d#m D+->d#m F# F# D+->F# D+->A# bm bm D+->bm d#m->B E->f° g#m g#m E->g#m f°->fm F#->a#m g#° g#° g#°->g#m g#°->bm g#m->G# g#m->B a#°->a#m a#m->A# A#->b° b°->bm bm->B

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.

Diameter5
Radius5
Self-Centeredyes

Modes

Modes are the rotational transformation of this scale. Scale 3455 can be rotated to make 9 other scales. The 1st mode is itself.

2nd mode:
Scale 3775
Scale 3775: Loptyllian, Ian Ring Music TheoryLoptyllian
3rd mode:
Scale 3935
Scale 3935: Kataphyllian, Ian Ring Music TheoryKataphyllian
4th mode:
Scale 4015
Scale 4015: Phradyllian, Ian Ring Music TheoryPhradyllian
5th mode:
Scale 4055
Scale 4055: Dagyllian, Ian Ring Music TheoryDagyllian
6th mode:
Scale 4075
Scale 4075: Katyllian, Ian Ring Music TheoryKatyllian
7th mode:
Scale 4085
Scale 4085: Rechberger's Decamode, Ian Ring Music TheoryRechberger's Decamode
8th mode:
Scale 2045
Scale 2045: Katogyllian, Ian Ring Music TheoryKatogyllian
9th mode:
Scale 1535
Scale 1535: Mixodyllian, Ian Ring Music TheoryMixodyllianThis is the prime mode
10th mode:
Scale 2815
Scale 2815: Aeradyllian, Ian Ring Music TheoryAeradyllian

Prime

The prime form of this scale is Scale 1535

Scale 1535Scale 1535: Mixodyllian, Ian Ring Music TheoryMixodyllian

Complement

The decatonic modal family [3455, 3775, 3935, 4015, 4055, 4075, 4085, 2045, 1535, 2815] (Forte: 10-2) is the complement of the ditonic modal family [5, 1025] (Forte: 2-2)

Inverse

The inverse of a scale is a reflection using the root as its axis. The inverse of 3455 is 4055

Scale 4055Scale 4055: Dagyllian, Ian Ring Music TheoryDagyllian

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> 3455       T0I <11,0> 4055
T1 <1,1> 2815      T1I <11,1> 4015
T2 <1,2> 1535      T2I <11,2> 3935
T3 <1,3> 3070      T3I <11,3> 3775
T4 <1,4> 2045      T4I <11,4> 3455
T5 <1,5> 4090      T5I <11,5> 2815
T6 <1,6> 4085      T6I <11,6> 1535
T7 <1,7> 4075      T7I <11,7> 3070
T8 <1,8> 4055      T8I <11,8> 2045
T9 <1,9> 4015      T9I <11,9> 4090
T10 <1,10> 3935      T10I <11,10> 4085
T11 <1,11> 3775      T11I <11,11> 4075
Abbrev Operation Result Abbrev Operation Result
T0M <5,0> 1535      T0MI <7,0> 4085
T1M <5,1> 3070      T1MI <7,1> 4075
T2M <5,2> 2045      T2MI <7,2> 4055
T3M <5,3> 4090      T3MI <7,3> 4015
T4M <5,4> 4085      T4MI <7,4> 3935
T5M <5,5> 4075      T5MI <7,5> 3775
T6M <5,6> 4055      T6MI <7,6> 3455
T7M <5,7> 4015      T7MI <7,7> 2815
T8M <5,8> 3935      T8MI <7,8> 1535
T9M <5,9> 3775      T9MI <7,9> 3070
T10M <5,10> 3455       T10MI <7,10> 2045
T11M <5,11> 2815      T11MI <7,11> 4090

The transformations that map this set to itself are: T0, T4I, T10M, T6MI

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 3453Scale 3453: Katarygic, Ian Ring Music TheoryKatarygic
Scale 3451Scale 3451: Garygic, Ian Ring Music TheoryGarygic
Scale 3447Scale 3447: Kynygic, Ian Ring Music TheoryKynygic
Scale 3439Scale 3439: Lythygic, Ian Ring Music TheoryLythygic
Scale 3423Scale 3423: Lothygic, Ian Ring Music TheoryLothygic
Scale 3391Scale 3391: Aeolynygic, Ian Ring Music TheoryAeolynygic
Scale 3519Scale 3519: Raga Sindhi-Bhairavi, Ian Ring Music TheoryRaga Sindhi-Bhairavi
Scale 3583Scale 3583: Chromatic Undecamode 3, Ian Ring Music TheoryChromatic Undecamode 3
Scale 3199Scale 3199: Nonatonic Chromatic 3, Ian Ring Music TheoryNonatonic Chromatic 3
Scale 3327Scale 3327: Decatonic Chromatic 3, Ian Ring Music TheoryDecatonic Chromatic 3
Scale 3711Scale 3711: Decatonic Chromatic 4, Ian Ring Music TheoryDecatonic Chromatic 4
Scale 3967Scale 3967: Chromatic Undecamode 5, Ian Ring Music TheoryChromatic Undecamode 5
Scale 2431Scale 2431: Gythygic, Ian Ring Music TheoryGythygic
Scale 2943Scale 2943: Dathyllian, Ian Ring Music TheoryDathyllian
Scale 1407Scale 1407: Tharygic, Ian Ring Music TheoryTharygic

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.