Convert REX to SF2

Understanding REX and SF2 file formats

REX files (Recycle Loop Files) are audio loop files created by Propellerhead ReCycle. They contain sliced audio loops, allowing for tempo flexibility and easy manipulation in digital audio workstations (DAWs). SF2 files (SoundFont 2) are sample-based instrument files used in many synthesizers and samplers. They store audio samples mapped to different notes, enabling realistic instrument playback.

Why convert REX to SF2?

Converting REX to SF2 allows you to use sliced audio loops as playable instruments in samplers that support the SoundFont format. This is useful for music producers who want to trigger loop slices as individual notes or create new instruments from existing loops.

How to convert REX to SF2

Direct conversion from REX to SF2 is not natively supported by most software. The process typically involves two main steps:

1. Extract slices from the REX file: Use a DAW or audio editor (such as Propellerhead ReCycle or Reason) to export each slice as a separate WAV file.
2. Create an SF2 SoundFont: Use a SoundFont editor (such as Polyphone or Vienna SoundFont Studio) to import the WAV slices and map them to MIDI notes, then save the project as an SF2 file.

Recommended software for REX to SF2 conversion

• Propellerhead ReCycle: For opening and exporting slices from REX files.
• Polyphone: A free and user-friendly SoundFont editor for creating SF2 files from WAV samples.

Step-by-step conversion process

1. Open your REX file in Propellerhead ReCycle.
2. Export each slice as a separate WAV file using File → Export.
3. Launch Polyphone and create a new SoundFont project.
4. Import the exported WAV slices into Polyphone.
5. Map each slice to a MIDI note in the instrument editor.
6. Save your project as an SF2 file using File → Save.

Tips for best results

• Ensure all slices are named and organized for easy mapping in the SoundFont editor.
• Test the resulting SF2 file in your sampler to verify correct mapping and playback.