accidental-value

usage

var accval = require('accidental-value');

accval(accidental)

Returns the value of the accidental from the table below. This is useful for manipulating notes and intervals.

• 'x' = 2
• '#' = 1
• '' = 0
• 'b' = -1
• 'bb' = -2

accval.interval(accidental)

Returns the relative interval (given in [steps, semitones] format) of the accidental. E.g.:

accval.interval('#') // [0, 1]
accval.interval('bb') // [0, -2]