Some synthesis methods are pretty abstract, and while many people grasp the concept of subtractive synthesis, its what 90% of current synthesizers and modules are based on, there are other synthesis types and methods that are less known. Karplus Strong is one of those - defined as a physical modelling technique primarily geared towards the emulation of string vibrations. If you are an Apple Logic user, you may have come across it in software with the included Scuplture instrument, but in hardware, its more convoluted to construct, requiring a number of discrete elements.
We had a chat with Chris Randall of Audio Damage Inc who's been working on a module called Proton, that combines all of the elements of KP with a few twists of their own. Typically the algorithm is best suited to the emulation of resonating strings such as guitar, banjo and koto type sounds.
Karplus Strong Theory (Via Wikipedia)
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