MIDI triggering in Cockos Reaper

In this guide, you will learn how to use MIDI notes in Cockos Reaper to retrigger LFOs in ShaperBox (TimeShaper, FilterShaper Core, VolumeShaper, PanShaper, WidthShaper), FilterShaper 3, MidiShaper and PanCake.

Using this technique, the LFO will play from the beginning each time a MIDI note is received. You can therefore trigger the LFO in any pattern you like – for example, sidechain your bassline to a non-4/4 kick drum pattern.


1. Enable MIDI Trigger mode

Select a 'MIDI Triggered' or 'MIDI 1-Shot' triggering mode in the Cableguys plugin.

Note: If you are a Mac user, load the VST version of the Cableguys plugin and not the AU version, as AU plugins cannot accept MIDI input.



2. Set up a MIDI Track

Add another Track, create a MIDI clip, and add some MIDI notes in the rhythm that you want to trigger the Cableguys plugin.

Any note will work, except when ShaperBox's MIDI Trigger option for Wave switching is enabled, in which case only C notes will trigger a Wave reset.



3. Route the MIDI track

On the track with the MIDI clip, click the Route button, then in the Sends section, click the dropdown that reads "Add New Send…". Select the track with the Cableguys plugin ("Bassline" in our example).

Now the LFO will be reset with each MIDI note.