Create and manipulate pitch class sets

Get pitch class of a note or midi number

Chroma (pitch-class profile) feature — a 12-D vector where each bin holds

Find the name of pitch class sets

Discrete fourier transform applied to pitch class sets

Pitch in (western) music theory

node-edge-tts is a module that using Microsoft Edge's online TTS (Text-to-Speech) service on the Node.js

Pitch class set theory represented in a javascript library

A tiny, simple, fast fuzzy search library

Parse intervals in shorthand notation

Parse intervals in shorthand notation

Functions to work with midi numbers

Find the name of pitch class sets

Parse intervals in shorthand notation

A JS module that takes audio and converts it to MIDI with machine learning

A pitch-detection library for node and the browser

A simple pitch detection library.

Parse and properties of roman numeral strings

Kali is used for realtime time-stretching and pitch shifting in Javascript. It can change Tempo and Pitch independently.

Musical chords and its relations