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@tonaljs/scale-dictionary

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Readme

@tonaljs/scale-dictionary

@tonaljs/scale-dictionary is a dictionary of musical scales.

API

`scaleType(type: string) => ScaleType`

Given a scale type name, return a ScaleType object with the following properties:

name: the scale type name
aliases: a list of alternative names
quality: Major | Minor | Augmented | Diminished | Unknown
num: the pcset number
chroma: the pcset chroma
length: the number of notes
intervals: the interval list

Example:

scaleType("major"); // =>
// {
// name: "major",
// aliases: ["ionian"],
// num: 2773,
// chroma: "101011010101",
// length: 7
// intervals: ["1P", "2M", "3M", "4P", "5P", "6M", "7M"],
// });

`entries() => Scale[]`

Return a list of all available scale types

`add(intervals: string[], name?: string, aliases?: string[]) => ScaleType`

Add a scale type to dictionary:

add(['1P', '5P'], null, ['5']);

HOW TO

How to get all names?

entries().map(scaleType => scaleType.name)

How to get all pentatonics names?

entries()
  .filter(scaleType => scaleType.length === 5)
  .map(scaleType =>scaleType.name);

How do to add a scale to the dictionary?

import { scale, add } from '@tonaljs/scale'
add(['1P', '5P'], 'quinta', ['quinta justa', 'diapente'])
scale('quinta') // => { name: "quinta", intervals: ...}
scale('quinta justa') // => { name: "quinta", intervals: ... }