Twelve TheoryMath + Music Playground
Explore interactive music theory and music by numbers through Free Play, Math Mode, Chord Game, Circle Counting, the Triad Chart, Chord Progressions, Church Modes, the Counterpoint Game, WTC, Dodecachordon, Harmonic Cone, the Harmonics Quiz, Frequency Chart, Harmonic Wave, Waveforms, Harmonic Polygons, Tuning String, Sheet Music, Musical Circles, and Ear Training.
Interactive module
Waveforms
Exact ideal harmonic ratios through H8. Hold a cone to hear all of its lit levels together.
Starting octave
A3
A3 · 216.00 Hz
Relative sound + color strength
StrongFaint
Hold a cone to hear its harmonics together.
1–4 play cones · O / P change octave
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