Here’s what Schaaf has to say about the video:
In this Eurorack modular workshop video, I explain the usage of the EFFEXX string filter algorithm. If you already have an EFFEXX module, you probably have the three additional modules I used for this workshop.
For my sound examples, I added one Noise generator, one ADSR envelope generator and one VCA.
‘The workshop explains the cabling and gives a lot of tips how to tweak the parameters for different sonic results.
If you just would like listening to the string filter sounds you can skip the first 4 minutes.
Details on the EFFEXX module are available at the Radikal site.