This video, Karplus Funk, demonstrates Karplus-Strong synthesis with a modular synth.

Patch details:

• Doepfer A-188-1 512 BBD, A-131 VCA, and A-140 ADSR (foreground).
• Doepfer A-121 filter in low pass modulated by another A-140 (background).
• Percussion is Doepfer A-111 and A-117.
• Sequencing is A-152 and A-160/161.

Karplus-Strong string synthesis is a type of physical modelling synthesis that feeds a short waveform through a filtered delay line to model acoustic sounds, such as hammered or plucked strings or some types of percussion.