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Four-band parametric equaliser LV2 plugin. DSP code by Fons Adriaensen.
Homepage: http://nedko.arnaudov.name/soft/lv2fil/
Screenshot: http://nedko.arnaudov.name/soft/lv2fil/lv2fil.png
Tarball download:

http://nedko.arnaudov.name/soft/lv2fil/lv2fil-2.0.tar.bz2

http://nedko.arnaudov.name/soft/lv2fil/lv2fil-2.0.tar.bz2.sig
=3D Overview =3D

Stereo and mono LV2 plugins, four-band parametric equalisers.

Each section has an active/bypass switch, frequency, bandwidth and

gain controls. There is also a global bypass switch and gain control.
=3D DSP =3D

The 2nd order resonant filters are implemented using a Mitra-Regalia

style lattice filter, which has the nice property of being stable

even while parameters are being changed.
All switches and controls are internally smoothed, so they can be

used 'live' whithout any clicks or zipper noises. This should make

this plugin a good candidate for use in systems that allow automation

of plugin control ports, such as Ardour, or for stage use.
=3D GUI =3D

The GUI provides knobs and toggle buttons for tweaking filter

parameters. It also provides frequency response widget with

differently coloured curve for each section and separate curve for

total equalization effect.
The GUI uses the External UI extension. lv2rack (part of zynjacku)

supports this extension. Ardour-2.8 needs patch to support the

external UI extension.
=2D-=20

Nedko Arnaudov 
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