Projects / Calf


Calf is a set of audio effect plugins. Several plugins are provided: flanger, reverb, multimode filter, vintage delay, phaser, simple monophonic VA synthesizer, and organ/pad synthesizer. LADSPA+LRDF, DSSI, and LV2 versions are available, as well as GTK+ based UIs and a standalone application using GTK+2 and JACK.

Operating Systems

Recent releases

  •  29 Jan 2009 21:52

    Release Notes: A new Filterclavier plugin (MIDI-controlled filter). More CPU-efficient GUIs. Live graphs in DSSI plugins. Improved Reverb, MultiChorus, and Organ. Minor improvements in the JACK host. Stability and compatibility fixes.

    •  29 Nov 2008 07:01

      Release Notes: A new Compressor plugin has been added. Most of the effects have new user interfaces. Live frequency response graphs have been added to Flanger, MultiChorus, and Filter GUIs. LV2 support has been improved. Bugfixes, clean-ups and new presets were included.

      •  20 Aug 2008 23:55

        Release Notes: Usability of knob controls has been improved. A new FM-based percussive module has been added to Calf Organ. The rotary speaker effect is more flexible due to added parameters, and sounds more subtle due to a changed algorithm. A freeze-on-exit bug has been fixed in the JACK host. The JACK host license has been changed back to the GPL due to use of the LASH client library.

        •  05 Jul 2008 20:19

          Release Notes: Memory management bugs were fixed. Knobs were improved. The preset system was improved. New Monosynth presets were added. Startup time was reduced in Organ and Monosynth.

          •  02 Jun 2008 23:45

            Release Notes: Changes include LV2 support (including GUI and event extension support), a phaser effect, a redesigned organ synthesizer, improved calfjackhost, removal of the dependency on the phat UI library, and many little improvements and bugfixes. Some newly-found problems with OpenSUSE and 64-bit architectures have been fixed. The project Web site has been redesigned.


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