Swift library for music theory, currently focused on chords/harmony.
Tonic answers musical questions, such as:
-
What's the note for this pitch in this key?
Note(pitch: Pitch(midiNoteNumber), key: .Bb) -
What's the name of a chord?
Chord(notes: notes).description -
What chords are in this key?
Key.Cm.chords -
What chords in this key contain this note?
Key.C.chords.filter { $0.noteClasses.contains(.C) } -
What notes do these keys have in common?
Key.C.noteSet.intersection(Key.Cm.noteSet) -
What notes don't these keys have in common?
Key.C.noteSet.symmetricDifference(Key.Cm.noteSet)
These questions are all tested in our unit tests explicitly.
- Correctness. Try to be as correct with respect to music theory as possible.
- Strong typing. Use types to prevent errors (e.g.
Pitchinstead ofUInt8). - Good performance. Tonic uses bit sets to represent pitch sets and note sets.
The documentation is host on the AudioKit.io Website. The package includes a demo project as well.
Install using Swift Package Manager.