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Official effect

Sputter Fuzz

Choke-and-spit fuzz that currently uses the same hard-gate core as Gated Fuzz.

This preview currently matches the Gated Fuzz signal path: high-pass cleanup, a biased tanh stage, then a clamp-based gate keyed by a smoothed absolute-value envelope before the final high shelf. It already produces abrupt sputter because of that gate logic, but it is not yet a separately tuned sputter-specific circuit.

  • Fuzz & Destruction
  • Library #33
  • Preview 8s

Waveform preview

Static peaks come from the compiled FAUST preview render. The live scope is drawn from the browser playback output in real time.

Timeline
0:00 / 0:08
Source
Compiled browser preview
Live oscilloscope from the browser playback output.AnalyserNode keeps the signal path unchanged while exposing the waveform.

How It Works

Technical view

This preview currently matches the Gated Fuzz signal path: high-pass cleanup, a biased tanh stage, then a clamp-based gate keyed by a smoothed absolute-value envelope before the final high shelf. It already produces abrupt sputter because of that gate logic, but it is not yet a separately tuned sputter-specific circuit.

  • Fuzz & Destruction
  • waveshaping / saturation
  • delay processing
  • oscillator / LFO modulation
  • DC blocking

Signal Path

Compiled preview chain

Preview source: An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it hits the fuzz core.

  1. 1internal picked-string demo phrase
  2. 2stereo spread with a short right-channel delay
  3. 3high-pass cleanup
  4. 4biased tanh fuzz stage
  5. 5smoothed amplitude gate
  6. 6post-fuzz high-shelf tone shaping
  7. 7dry / wet mix
  8. 8DC blocker
  9. 9output gain trim
  10. 10final tanh limiter

Preview source

An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it hits the fuzz core.

Effect core

Hard-gated fuzz that clips first, then applies a smoothed amplitude gate before final high-shelf tone shaping.

Signal path

The static waveform and the live player both reflect this compiled signal chain.

  • internal picked-string demo phrase
  • stereo spread with a short right-channel delay
  • high-pass cleanup
  • biased tanh fuzz stage
  • smoothed amplitude gate
  • post-fuzz high-shelf tone shaping
  • dry / wet mix
  • DC blocker
  • output gain trim
  • final tanh limiter

Controls that matter

These are the currently active controls detected in the FAUST source for this effect.

  • mix: Blends the untouched stereo preview source with the fuzzed path after the effect core.
  • output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
  • fuzz: Raises both the gain feeding the fuzz stage and the multiplier that sharpens the gate response.
  • tone: Adjusts the post-fuzz high shelf.
  • bias: Shifts the pre-clip offset and changes the threshold used by the smoothed amplitude gate.

Code-backed analysis

The generated description is tied to the active helper blocks and routing found in the current DSP.

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • fuzzCore
  • phraseMono
  • previewShiftSamples

Controls

Audible controls in this DSP

  • mix

    Active

    Blends the untouched stereo preview source with the fuzzed path after the effect core.

    Lower settings preserve more pick attack and clean body; higher settings push the fuzz treatment to the front.

  • output_gain_db

    Active

    Applies final post-effect level trim after DC blocking and before the output limiter.

    Matches loudness without changing the actual fuzz structure.

  • fuzz

    Active

    Raises both the gain feeding the fuzz stage and the multiplier that sharpens the gate response.

    Makes the fuzz denser and the gate action more abrupt.

  • tone

    Active

    Adjusts the post-fuzz high shelf.

    Changes how much high-end spit survives after the gate action.

  • bias

    Active

    Shifts the pre-clip offset and changes the threshold used by the smoothed amplitude gate.

    Lower values choke the note tail faster; higher values let it ring a bit longer before shutting off.

Analysis

Code-derived notes

Current implementation shares the same hard-gate topology as Gated Fuzz and Velcro Fuzz.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • fuzzCore
  • phraseMono
  • previewShiftSamples
  • gatedSignal
  • softsat
  • pickedVoice
  • fund
  • pickEnv
  • ampEnv
  • triggerAt
  • maxDelaySamples

Inactive helpers

  • synthVoice
  • organVoice
  • bellVoice
  • quantize
  • combLP
  • echoOnly
  • diffuser

Warnings

No current warnings are attached to this effect.

Source

  • library/fuzz-destruction/sputter-fuzz.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 33

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Each effect page uses the same generated description pipeline and compiled waveform preview assets.

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