This library is an implementation of state-of-the-art pitch-shifting algorithms.

This project is written in Clojure, and the dependencies are listed in project.clj. The simplest way to use this project is to install Leiningen and run the command lein deps. Note: you may need to start a JACK server in order to properly start Overtone.

Given a the file your-audio-file.wav file, you can pitch-shift it by a factor 1.2 by calling either:

(-main "your-audio-file.wav" "output.wav" 1.2)

from inside the project repl (by running lein repl), or by running

lein run "your-audio-file.wav" "output.wav" 1.2

from the command line.

The result will be written in output.wav.

An in-depth theoretical explanation of the process involved in the pitch-shifting algorithm implemented by this library is available in the folder docs/.

Distributed under the Eclipse Public License either version 1.0 or any later version.