Projects / Freeverb3


Freeverb3 is a signal processing library. It includes many types of audio processing effects and signal generators including a linear feedback shift register (LFSR) maximum length sequence (MLS) generator, multiple types of high quality mono+stereo reverb effects, a multi slot impulse response processor, multiband hardknee+softknee compressor and limiter, a stereo enhancer, a limiter, and many types of infinite impulse respose (IIR) and finite impulse response (FIR) filters. Also available is Freeverb3VST, a VST effects plugins package based on the Freeverb3 library.

Operating Systems

Recent releases

  •  09 Jun 2014 14:56

    Release Notes: A cpuid bug was fixed along with some small bugs on amd64.

    •  07 Jun 2014 15:35

      Release Notes: Freeverb3 3.1.1 has been released. This version is a bugfix release from version 3.1.0. Change Logs: * Bug fixes - Fixed cpuid bug on amd64. * Other enhancements - Audacious 3.5 was supported.

      •  16 Nov 2013 11:55

        Release Notes: The linear feedback shift register (LFSR) maximum length sequence (MLS) generator was added. The autoconf files were updated to confirm the new autoconf/automake structure. The out-of-tree build was supported.

        •  01 Jun 2013 11:31

          Release Notes: The Audacious 3.1 API was supported. Obsolete plugins' codes were removed. The Gtk3 API was supported.

          •  27 Jul 2012 10:41

            Release Notes: The new reverb "Hibiki Reverb" was added. Some small enhancements were made.

            Recent comments

            11 Jun 2014 13:20 tkamogashira

            Very sorry for the long delay.
            Please feel free to use any of the codes.
            I would prefer the zrev2.cpp instead of the revmodel because the algorithm is better
            than the revmodel's one.

            27 May 2014 02:54 AlwinEsch

            Hello tkamogashira,

            have created a dsp addon system inside XBMC, see Currently I search something for a demo dsp addon for it to have a example for other programmers and testing pupose. Is it allowed from you to use freeverb3_plugin_revmodel for this example?

            Best regards,



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