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| 1 | = Overview = |
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| 2 | Stereo and mono LV2 plugins, four-band parametric equalisers. |
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| 3 | Each section has an active/bypass switch, frequency, bandwidth and |
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| 4 | gain controls. There is also a global bypass switch and gain control. |
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| 5 | |
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| 6 | = DSP = |
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| 7 | The 2nd order resonant filters are implemented using a Mitra-Regalia |
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| 8 | style lattice filter, which has the nice property of being stable |
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| 9 | even while parameters are being changed. |
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| 10 | |
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| 11 | All switches and controls are internally smoothed, so they can be |
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| 12 | used 'live' whithout any clicks or zipper noises. This should make |
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| 13 | this plugin a good candidate for use in systems that allow automation |
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| 14 | of plugin control ports, such as Ardour, or for stage use. |
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| 15 | |
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| 16 | The DSP code is written by Fons Adriaensen |
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| 17 | |
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| 18 | = GUI = |
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| 19 | The GUI provides knobs and toggle buttons for tweaking filter |
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| 20 | parameters. It also provides frequency response widget with |
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| 21 | differently coloured curve for each section and separate curve for |
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| 22 | total equalization effect. |
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| 23 | |
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| 24 | The GUI uses the External UI extension. lv2rack (part of zynjacku) |
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| 25 | supports this extension. Ardour-2.8 needs patch to support the |
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| 26 | external UI extension. |
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