Polyphone Soundfont Editor

Polyphone is a soundfont editor for quickly designing musical instruments. It will help you to create and edit a musical instrument based on samples, using the sf2 format.

More than a simple editor, Polyphone has been designed to efficiently deal with big sets of instruments involving a large amount of data.

The software supports both of desktop(Windows/Mac/Linux) and Raspberry Pi. Free to use, under GNU GPL 3.0 license.


Import your sounds

Import any .wav sample to build your own musical instrument.

Create your instrument

Gather your finest audio samples and configure them to create a unique instrument.

Preview your creations

Play the instrument you just made with the virtual keyboard or an external midi device.

Save and export

Save your instruments in the sf2 format and export them as sfz or in the compressed sf3 format.

Edit existing soundfonts

Load existing files in the format sf2, sf3, sfz or sfArk (all versions).

Use convenient tools

Enjoy tools for bulk editing, detecting pitch, creating loops, transposing, equalizing and filtering samples.

Record your music

A recorder is included to keep a track on what you played with Polyphone.

Customize the interface

Adapt Polyphone by choosing the language (English, Spanish, French, …) and the way keys are called.

Check your work

Tables are provided to summarize the content of your instrument, so that errors are easy to find.


I worked on Korean translation and minor modifications of the Polyphone project from July 7th until a few days ago.

Visit Polyphone