Popularity
3.6
Declining
Activity
1.4
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Programming language: Go
License: MIT License
Latest version: v0.0.14
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README
Music Theory
Explorations in music theory.
Usage
package main
import (
mt "github.com/brettbuddin/musictheory"
"github.com/brettbuddin/musictheory/intervals"
)
func main() {
root := mt.NewPitch(mt.C, mt.Natural, 4)
root.Name(mt.AscNames) // C4
root.Freq() // 261.625565 (Hz)
root.MIDI() // 72
P5 := mt.Perfect(5) // Perfect 5th
A4 := mt.Augmented(4) // Augmented 4th
root.Transpose(P5).Name(mt.AscNames) // G4
root.Transpose(A4).Name(mt.AscNames) // F#4
root.Transpose(P5.Negate()).Name(mt.AscNames) // F3
mt.NewScale(root, intervals.Dorian, 1)
// [C4, D4, Eb4, F4, G4, A4, Bb4]
mt.NewScale(root, intervals.Mixolydian, 2)
// [C4, D4, E4, F4, G4, A4, Bb4, C5, D5, E5, F5, G5, A5, Bb5]
rootPosition := mt.NewChord(root, intervals.DiminishedSeventh)
// [C4, Eb4, Gb4, A4]
firstInversion := rootPosition.Invert(1)
// [C5, Eb4, Gb4, A4]
secondInversion := rootPosition.Invert(2)
// [C5, Eb5, Gb4, A4]
note := mt.NewNote(root, mt.D16) // C4 sixteenth note
note.Time(mt.D4, 120) // 125ms (quarter note getting the beat at 120 BPM)
}
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