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Strum

5.0 / 5  (4 votes)
System : Win32
Format : VST
Strum - free Karplus-Strong string synth plugin
Strum is Karplus-Strong string synth, written completely in assembly.

Two different and independent string generators for more variety of sounds, with own feedback, string length, attack/decay envelope and vibrato settings. First OSC is trying to simulate basic characteristics of four basic string types - nylon, bronze, steel and flatwound. Second generator uses basic shapes - sine, saw, triangle and square with additional options to tweak (tension & position).

Both generators share the same amp envelope, tremolo, timbre feedback settings and multi mode filter (lowpass, bandpass, highpass, bandreject, peak, Chamberlin lowpass, bandpass, highpass, peak, zOne lowpass, bandpass, highpass, peak, 303 lowpass, highpass and resonant filter). One LFO for cutoff modulation with 17 different shapes (Sine, Saw, Triangle, Ramp, Square and 4 of each based on Lorenz, Rosler and Ikeda attractors.

Delay, chorus and reverb module and simple soft knee limiter.
πŸ’° Please support freeware development
Nate
(4/5)
May 17 2026
Just what I was looking for. They're definitely aren't a lot of karplus strong synths out there. Let alone free.. You can easily get that synthetic plucked string sound you hear from Bjârk or Massive Attack back in the day.
anon
(5/5)
Jun 26 2025
Awesome plugin. Strings sound nice, lots of presets, small and compact, looks great too.
teet
(5/5)
Feb 01 2023
Nice simple plugin with presets
Anonymous
(5/5)
Aug 27 2022
Good job