Plucks
Key Features
- Karplus-Strong plucked-string engine for glassy harps, harpsichord-like attacks, metallic keys, and synthetic string tones
- Velocity-sensitive exciter pulse width that changes tone as well as loudness for more expressive playing
- Exciter color control that morphs from square-wave bite to noise-based attack material
- Custom low-pass damping stage inherited from the LuckyPlucker lineage for a distinctive decay character
- Decay times up to 60 seconds with Smart Decay smoothing to reduce abrupt note cutoffs
- Physical re-excitation behavior that feeds new attacks into active delay lines instead of simply layering voices
- Stereo mode, micro-pitch spread, fine tuning, and .TUN tuning-file support for wider and more experimental plucked textures
Description
Plucks is a Karplus-Strong plucked-string synthesizer plugin from AmateurTools, built as an open-source homage to the short, glassy physical-modeling tones associated with early Fruity Loops instruments. It focuses on struck and plucked string behavior rather than broad subtractive synthesis, so the useful range sits around harps, harpsichords, synthetic guitars, metallic keys, and bright percussive leads.
Velocity changes more than volume here: lower velocities narrow the exciter pulse width, which gives the instrument a playable tonal response from softer ticked notes to sharper attacks. The exciter color control morphs from square-wave energy toward noise, while the custom damping stage keeps the low-pass decay behavior central to the sound.
The long-release design is the main practical upgrade over a simple retro pluck machine. Decay can stretch to 60 seconds, Smart Decay smooths the tail to avoid abrupt cutoffs, and re-excitation feeds new attacks into an active delay line for piano- or harpsichord-like response without stacking extra voices.
Plucks is best treated as a focused character synth: quick to dial in, bright by nature, and especially useful when a track needs physical-modeling bite without a large commercial instrument. The current GitHub releases provide separate macOS, Windows, and Linux builds, with AU and VST3 formats noted by the developer and BPB.
Frequently Asked Questions
What kind of synth is Plucks?
Plucks is a Karplus-Strong plucked-string synthesizer, so it generates tones from short exciters feeding delay-line behavior rather than from sampled strings. That makes it strongest for synthetic harps, harpsichord-like attacks, metallic plucks, and percussive string textures.
How is Plucks related to LuckyPlucker?
The developer describes Plucks as a fork of SuperRiley64's LuckyPlucker, with inspiration and some code remaining from the original project. AmateurTools has added extensive changes, including expressive velocity behavior, long decay options, Smart Decay, stereo features, and tuning support.
Why does velocity matter in Plucks?
Velocity does more than adjust loudness. The README says low velocity narrows the exciter pulse width, which changes the initial tone and makes softer notes feel less bright and less aggressive.
Is the macOS build signed or notarized?
The developer notes that AmateurTools is not a licensed Apple Developer, so macOS users may need to approve the plugin manually in system settings. The README specifically mentions AU working on current macOS in Logic after allowing the plugin.
