chordola

• Realtime musical chord recognition
• Chord notes output per MIDI
• Music can come from any client supporting JACK Audio Connection Kit

Build

Get the Source

! This codebase uses git rsubmodule(s)

git clone --recursive https://github.com/relascope/chord-rec.git

or

git clone https://github.com/relascope/chord-rec.git
git submodule update --init --recursive

Prerequisites

apt install cmake make libjack-jackd2-dev libfftw3-dev -y

Build

cd console
cmake .
make

Usage

Start the Jack Audio Engine (e.g. with QJackCtl)

./chord-recogniser

Connect a JACK audio source (Graph of QJackCtl)

DOYJOY!

If it is boring to connect every day, try aj-snapshot.

Roadmap - DOJOY

• more backends
• MIDI output so that you kind of have a chord (maybe arp) which you can connect to your DAW or a synthesiser
• mobile app
• write chords to file
• Graphical user interface

Credits

Adam Stark developed the math behind in a beautiful library Chord-Detector-and-Chromagram