Polyphone is an open-source soundfont editor, available for platforms supported by Qt5 (GNU/Linux, MacOS X, Windows). It can be used to create musical instruments by putting together a multitude of audio samples and configure them appropriately, which can then be used by synthesisers such as FluidSynth (also in MuseScore) and Timidity and played using a MIDI keyboard or other instrument. Polyphone provides a simple, efficient and portable interface for creating and editing soundfonts in various formats, and tools to facilitate and automate the setting of different parameters, making it possible to handle a large amount of data. It is available in several languages.

Features include: - import from SF2, SF3, SFZ and sfArk file formats - export to SF2, SF3, SFZ file formats - support of SF2 format v2.01 and v2.04 (with 24-bit samples) - compatible with JACK and ASIO audio servers - built-in synthesiser, controlled by a virtual keyboard or MIDI signals - automatic recognition of root keys, sample pitch and correction - automatic loop of samples - simultaneous editing of parameters - specific tools for musical instrument creation - sound recorder to keep track of what is played in a WAV file - soundfont browser connected to the online repository