All Models based on the Hypersphere, at this time,…

Four Dimensional Models on Hypersphere

Planet 4D -2002

Graph Product C3 X C4 /
12 Quaternions

Musical Objects1

Hypersphere of Chords -2006

12 Notes + 24 Triads
Tonal Music2

Hypersphere of AnySet -2011

Any agreate of Notes
Atonal Music3

Hypersphere of Spectra -2012

Music as Combination of Frequencies
Spectral Analysis4

Generalized Hypersphere -2013

AEnables Other Tonnetze (T1,… Tn
Tonal Music5

Anti / Dual Hypersphere -2014

Reversed Model for Experiments
Experimental Tonal 6

Hypersphere ChickenWire -2015

Embedding any Musical Planar Graph in 4D
Tonal Music7

Tempered Hypersphere -2018

Possibily to show non equal Temperaments
Other Temperements8

Entangled Hyperspheres -2020

Combining two Spheres for 24 Tones music
Microtonal9

Hyperspheres of Phases -2022

Using Fourier Phases Model
Tonal10

Please refer to my Papers Section for scientific description,


  1. Planet 4D Original Model feature the most Symmetrical Positionning for 12 Notes or Musical Objects ↩︎
  2. On the Hypersphere of Chords, we display all minor ans major Triads ↩︎
  3. Unlike the Torus, the Spherical Barycenter methods enables reresenting any Set of Notes ↩︎
  4. Matching the audible Spectrum to 12 Octaves, we can now vizualise it in 4D (w S.De Gerando) ↩︎
  5. Possibilitiy to match Music pieces using other Tonnetze than T3T4 (w L.Bigo) ↩︎
  6. Using new Symmetries to transform existing chords sequences (w.E.Amiot) ↩︎
  7. Emmbeding other Graphs in 4D : Cohn Regions, Douthett CubeDance ↩︎
  8. Deforming the Hypersphere according to the musical Temperament (w.A.Calvet) ↩︎
  9. Using 2 Entangled Hyperspheres to represent Chords in 24 Tones Music (w.S.DeGerando) ↩︎
  10. 4D Musical Space based on Fourier decomposition (w.E.Amiot , J.Yust) ↩︎

Planet 4D Universe

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