chord-type

Get the type of the chord (can be 'M', 'm', '7' or 'o' to represent major, minor, dominant and diminished respectively)

It assumes that the chord is not inverted (first note is always the tonic)

It detects major, minor, augmented, diminished and dominant chords. All chord notes beyond the 5th (except 7th for dominant chords) are ignored

Parameters

• chord Array the chord notes

Examples

var chord = require('music.chord')
chord.type('C E G') // => 'M'
chord.type('C Eb G') // => 'm'
chord.type('C Eb Gb') // => 'dim'
chord.type('C E G#') // => 'aug'
chord.type('C E G B') // => 'M'
chord.type('C E G B7') // => '7'

Returns String the chord type ('M', 'm', '7', 'dim', 'aug' or null)

Install

Via npm: npm i --save chord-type

License

MIT License