Using Swift Charts and Voiceover Chart Descriptor to compose music
Chart de lune ?
Using Swift Charts and Voiceover Chart Descriptor to compose music. ?
Image source: https://hadikarimi.com/portfolio/claude-debussy-1908
Output
Note: Turn the sound on to hear the output
Song: Clair de Lune by Claude Debussy
ouput.mp4
Method
A basic chart was used with a scale from 0-100 for simplicity.
Setting the AXDataSeriesDescriptor isContinuous value to true will play the graph curves, what we want is discrete notes, so we set this value to false.
Using Piano Key Detector app, the discrete sounds were mapped to music notes across intervals of 5.
// .init(time: 0, value: 0), // C5
// .init(time: 1, value: 5), // D5
// .init(time: 2, value: 10), // D5
// .init(time: 3, value: 15), // D#5
// .init(time: 4, value: 20), // E5
// .init(time: 5, value: 25), // E5
// .init(time: 6, value: 30), // F#5
// .init(time: 7, value: 35), // F#5
// .init(time: 8, value: 40), // G#5
// .init(time: 9, value: 45), // G#5
// .init(time: 10, value: 50), // A#5
// .init(time: 12, value: 55), // A#5
// .init(time: 13, value: 60), // B5
// .init(time: 14, value: 65), // C6
// .init(time: 15, value: 70), // C#6
// .init(time: 16, value: 75), // D6
// .init(time: 17, value: 80), // D#6
// .init(time: 18, value: 85), // E6
// .init(time: 19, value: 90), // F6
// .init(time: 20, value: 95), // F#6
// .init(time: 21, value: 100) // G6
Once the notes were identified, a simple version of Clair de Lune was found, https://www.youtube.com/watch?v=ra08MiW8jLw
This was manually mapped to the music notes identified above, with pauses in the song where appropriate.