Aubio is a tool designed for the extraction of annotations from audio signals. Its features include segmenting a sound file before each of its attacks, performing pitch detection, tapping the beat and producing midi streams from live audio.

Ruck uses continuations and a simple scheduler to ensure "shreds" (Ruck threads) are woken at precisely the right time according to its virtual clock. Schedulers can map virtual time to samples in a WAV file, real time, time in a MIDI file, or anything else by overri...

A music library and domain-specific language for generating music via MIDI.

Ruby wrapper for RtMidi, a cross-platform C++ library for realtime MIDI input and output.

Create and analyze musical pitches from MIDI names/numbers and scientific pitch notation (SPN)..

Filter Program Change (PC) or Control Change (CC) events from MIDI files.

Powering MIDI through ruby

Control MPlayer with MIDI

Control VLC Media Player with MIDI

Convert a note string to MIDI note number.

represent rhythms as symbolic Strings and write them to MIDI

Ruby bindings for OS X's high-quality music sequencing/live-play API

Peas defines constants from music theory and allows one to perform math with them. Currently supports pitches (as MIDI values), pitch classes, and intervals using semitones, wholetones, chromatic, latin or diatonic abbreviations.

The library is based around an abstract representation for music notation, including pitch, note, dynamic, score, etc. A Ruby-based DSL is provided to aid in composition. Scores can be converted to common formats, like MIDI and LilyPond. Scores can also be rendered as audio via SuperCollider.

Builds Audulus patches based on WAV or MIDI file inputs

Builds Audulus patches based on WAV, CSV, or MIDI file inputs

A full-featured and complete Ruby wrapper of the ultra-powerful FMOD Low-Level API for accomplishing all of your audio needs. Uses the built-in Fiddle library (Ruby 2.0+) to eliminate unnecessary external gem dependencies, all that is needed is the FMOD platform-specific libraries. FMOD supports ...

Utility functions to use the Akai APC mini MIDI controller with Sonic Pi

Stretto is a Ruby implementation of JFugue, an open source library originally written in Java by David Koelle for programming MIDI.

This gem provides programmatic access to the Novation Launchpad MK2. LEDs can be lighted and button presses can be evaluated using launchpad's MIDI input/output.