Function interval

Get interval properties. It returns an object with:

• name: the interval name
• num: the interval number
• type: 'perfectable' or 'majorable'
• q: the interval quality (d, m, M, A)
• dir: interval direction (1 ascending, -1 descending)
• simple: the simplified number
• semitones: the size in semitones
• chroma: the interval chroma

Example

import { interval } from '../core'
interval('P5').semitones // => 7
interval('m3').type // => 'majorable'
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