freeverb-rs
A Rust implementation of the Freeverb algorithm.
About Freeverb
Freeverb was originally written in C++ by "Jezar at Dreampoint", and was released into the public domain in June 2000. It is now widely used in various incarnations in multiple software packages.
About freeverb-rs
This implementation of Freeverb in Rust is an almost direct conversion of the original source, created as a demonstration project for a talk I gave about Rust at the Audio Developer Conference 2018. The code has been updated since then, so if you want to follow along with the talk then take a look at the adc-2018 branch.
There are a couple of (intentional) differences to the original implementation:
- delay line buffers are dynamically allocated for simplicity. This may have a performance impact, and once generic constants are available I would like to make the buffer static.
- 64 bit processing is used internally whereas the original is 32 bit. I might make the sample type configurable at some point, but for now 64 bit processing seemed like a sensible default.
Repo structure
src/freeverb/
This contains the core implementation of Freeverb, with a simple interface.
src/audio_module
This contains a (very) experimental generic module+parameter library, which I really only added as an excuse to explore approaches to polymorphism. The audio_module approach is currently only used by app_gtk, it might go away in the future, or maybe I'll decide I like it and continue to work on it. At this point I don't know!
src/freeverb_module
The freeverb processor wrapped up as an AudioModule, currently only used by app_gtk.
src/clib
A static library that provides C bindings to the freeverb::Freeverb processor, used by app_juce.
examples/app_gtk
A very basic audio+GUI application that runs the freeverb::Freeverb processor.
You will need gtk installed on your system for this to work.
examples/app_juce
A very basic JUCE application that runs the freeverb::Freeverb processor via a statically linked library.
examples/wasm
A library that provides a wasm-bindgen interface to the freeverb::Freeverb processor.
Also in the folder is a small web application that runs the wasm processor.