[PlanetCCRMA] JACK Rack and vkeybd

Paul Coccoli pcoccoli at gmail.com
Mon Jun 2 18:58:33 PDT 2008

On Mon, Jun 2, 2008 at 12:46 AM, mrskinnyarms <mrafoster at gmail.com> wrote:
> Hello,
> I've been trying to find a way to use my keyboard to disable/enable LADSPA
> effects under JACK Rack.
> This would be especially useful during live performances where I could take
> an old keyboard, rip most of the keys out (save for a few), and be able to
> stomp on those keys in order to switch effects that are manipulating my
> input.
> I recently discovered that you can add midi controls to certain functions of
> the plugins in the Rack, and I came up with the idea of using vkeybd to send
> MIDI messages to JACK Rack which, if it worked, would serve my needs
> perfectly.
> I've been attempting to configure everything correctly, but have yet to have
> any success.
> Is this even viable?
> I made sure vkeybd was routed to JACK Rack in JACK, but it seems like the
> only fields I can edit under the Rack are MIDI Controller, MIDI Channel, and
> values for the effects options.
> Advice would be awesome!
> --
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What version of jack-rack?  I have 1.4.6, and when I right-click on
the enable button for a plugin, I get the "Add MIDI Control" option
just like on a slider.

By the way, another option would be to hack up a joystick and use
aseqjoy to convert the button presses to MIDI CC.

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