Freeverb3 Reverb Impulse Response Processor

Freeverb3 is a signal processing library. This library includes many types of audio processing effects and signal generators. The linear feedback shift register (LFSR) maximum length sequence (MLS) generator, multiple types of high quality mono+stereo reverb effects, an multi slot impulse response processor, multiband hardknee+softknee compressor and limiter, a stereo enhancer, a limiter and a lot of types of infinite impulse respose (IIR) and finite impulse response (FIR) filters are available. The convolution reverb algorithm is highly optimized for x86 processors by using hand optimized codes of 3DNow!/SSE/SSE3/AVX/FMA/FMA4 (single precision), SSE2/SSE4/AVX/FMA/FMA4 (double precision). This algorithm can be used for zero latency realtime sound effect processing.

List of Main Effects in Freeverb3

Impulse Response Convolution Processor: Fast zero latency multithreaded algorithms optimized with SIMD.
Enhanced Freeverb: An original freeverb plate reverb algorithm with some enhancements.
Enhanced NVerb: A simple plate reverb algorithm in CCRMA clm library with stereospread and feedback enhancements.
Simple Tank Reverb with modulation: An original type of a plate reverb algorithm in the Lexicon 224 developed by David Griesinger. This reverb was introduced by Jon Dattorro in the AES article.
New Reverb based on Dattorro's Progenitor Reverb: A variant type of the allpass loop reverb, which is similar to the simple tank reverb.
New Reverb based on FDN zita Reverb: A variant type of the allpass FDN reverb.
Stereo Enhancer: A simple differential stereo enhancer.
Early reflection: An small early reflection framework, which includes some samples from the "About This Reverberation Business" article.
Softknee/Hardknee Compressor: A simple compressor with RMS/envelope detector.
Softknee/Hardknee Limiter: A simple limiter with RMS/envelope detector.
1st/2nd order LPF/HPF/BPF/BEF / BiQuad Filters
FIR LPF/HPF/BPF/BEF constructor
Linear Phase 3band frequency splitter
Linear phase multi band compressor
A linear feedback shift register (LFSR) maximum length sequence (MLS) generator.
Sampling Rate Converter: A wrapper of libsamplerate.

GNU Savannah and Freecode Project Pages

Project Homepage
GNU Savannah Project Main
Project Download Area
Browse Project Git Sources Repository
Freecode Main

Recommended Source Code Download

You can download the latest version from the Project Download Area.

If you want to use the effect plugins of XMMS, Beep Media Player or Audacious-1.x and 2.x, you can use the Freeverb3 version 2.6.7.

Dependencies

The main library requires FFTW3 only. If you want to build audacious plugins, audacious, gtk and libsndfile are required. To build jack sample programs, jack, gtk and libsndfile are required.

FFTW3
libsndfile
jack
audacious
gtk, glib2, gthread, pango

Freeverb3 VST plugins

The VST plugins of Freeverb3 is hosted on following repository site.

Freeverb3VST