rFXGen

A simple and easy-to-use fx sounds generator, based on the amazing Dr.Petter's sfxr.

rFXGen can be used for free as a WebAssembly online tool and it can also be downloaded as a standalone tool for Windows and Linux with some extra features. Binaries for other OSs are not released but they can be compiled from sources.

Features

• Predefined sound presets (Coin, Shoot, Explosion, PowerUp...)
• Multiple wave types supported (Square, Sawtooth, Sine, Noise)
• Up to 5 sound slots to store generated sound (temporary save)
• Load .rfx files with sound generation parameters
• Save .rfx files with sound generation parameters (104 bytes only)
• Export wave data as .wav, .raw data or .h code file (byte array)
• Configurable sample-rate, bits-per-sample and channels on export
• Multiple GUI styles with support for custom ones (.rgs)
• Command-line support for .rfx to .wav batch conversion
• Command-line support to generate audio files based on presets
• Command-line audio player for .wav, .ogg, .mp3 and .flac
• Completely portable (single-file, no-dependencies)
• Free and open-source

Screenshot

Usage

Open the tools and use the buttons to generate random sounds. Use the sliders to customize sound parameters. Sounds could be saved as .rfx (sound generation parameters) and also exported to .wav, .raw (samples data) and .h (byte array code file).

rFXGen Standalone comes with command-line support for batch conversion and audio playing. For usage help:

rfxgen.exe --help

License

rFXGen source code is distributed as open source, licensed under an unmodified zlib/libpng license.

rFXGen binaries are completely free for anyone willing to compile it directly from source.

rFXGen Standalone desktop tool is distributed as freeware.

In any case, consider some donation to help the author keep working on software for games development.

Copyright (c) 2015-2025 raylib technologies (@raylibtech) / Ramon Santamaria (@raysan5)