use-scale

Scale pattern metadata primitives for RustUse.

Experimental

use-scale is experimental while use-music remains below version 0.3.0.

Example

use use_scale::{ScaleKind, ScaleName, ScalePattern};

let name = ScaleName::new("C major")?;
let pattern = ScalePattern::new([2, 2, 1, 2, 2, 2, 1])?;

assert_eq!(name.as_str(), "C major");
assert_eq!(ScaleKind::Major.as_str(), "major");
assert!(pattern.is_heptatonic());
# Ok::<(), use_scale::ScaleError>(())

Scope

• Scale names, kinds, degrees, tone counts, and semitone step patterns.
• Small helpers for heptatonic, pentatonic, and chromatic classification.

Relationship to use-acoustics

use-music keeps symbolic music metadata separate from use-acoustics, which owns physical sound calculations such as frequency, wavelength, decibels, sound pressure, sound intensity, period, angular frequency, and speed-of-sound approximations.

Non-goals

• Audio generation, scale playback, full harmonic analysis, or automatic composition.

License

Licensed under either Apache-2.0 or MIT.