structural / Symbolic
Point
A relative pitch position measured in semitone steps. Anchor it to a note to obtain an absolute pitch; keep it unanchored to compare transposed shapes.
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Anchor a relative point
A point is an offset, not a MIDI pitch. Moving its anchor changes the sounding note while the offset remains the same.
Transpose0 st
Relative point
4Realized note
E4Pitch class
4 · EAnchor
C4Written forms
Ways to write this concept
Each notation describes the same underlying object. Load a playable example to hear one MIDI realization in the Code Sequencer.
number
Non-negative integer representing abstract position in a 1D space
04733
Choose Load beside a convertible example to open its live player. Some catalog formats describe analysis or a display label and have no note realization yet.
Concept connections
NoteOne concrete MIDI pitch with an octave. Its pitch class keeps the note name while discarding that register.Pitch classOne of the twelve pitches from C to B, independent of octave. Transposition rotates its position around the chromatic circle.Point SetA rootless arrangement of semitone offsets from the lowest note. Its shape stays the same when a MIDI voicing is transposed.Point Set CollectionA collection of interval patterns (point sets) that are transposition-invariantPoint Set Sequence CollectionAn unordered, transposition-invariant collection of point-set progressions — a library of progression shapes independent of key. Its `groupOf` is point-set-sequence.Point SpaceA distribution over relative semitone positions from an anchor. It retains weighted shape while discarding absolute MIDI register.