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Official effect

Anti-Icepick Tamer

Top-end tamer built from a steep high-shelf cut and an upper-mid peaking cut.

The current path is entirely static: it first applies a high-shelf attenuation whose cutoff shifts with `motion`, then applies a peaking EQ cut whose depth is controlled by `rate`. There is no modulation or dynamics here despite the shared control names, so it behaves as a focused harshness smoother rather than as a moving filter.

  • Filter, Wah & Envelope
  • Library #84
  • 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

The current path is entirely static: it first applies a high-shelf attenuation whose cutoff shifts with `motion`, then applies a peaking EQ cut whose depth is controlled by `rate`. There is no modulation or dynamics here despite the shared control names, so it behaves as a focused harshness smoother rather than as a moving filter.

  • Filter, Wah & Envelope
  • 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 filter core.

  1. 1internal picked-string demo phrase
  2. 2stereo spread with a short right-channel delay
  3. 3static high-shelf reduction
  4. 4upper-mid peaking cut
  5. 5dry / wet mix
  6. 6DC blocker
  7. 7output gain trim
  8. 8final 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 filter core.

Effect core

Static high-shelf reduction plus upper-mid peaking cut for taming harsh top end.

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
  • static high-shelf reduction
  • upper-mid peaking cut
  • 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 filtered path after the effect core.
  • output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
  • focus: Sets the amount of high-shelf attenuation.
  • motion: Moves the turnover frequency of the high-shelf cut and the center of the peaking cut upward.
  • rate: Sets the depth of the upper-mid peaking cut.

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
  • filterCore
  • phraseMono
  • previewShiftSamples

Controls

Audible controls in this DSP

  • mix

    Active

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

    Lower settings preserve more dry attack and full-band tone; higher settings emphasize the filter treatment.

  • output_gain_db

    Active

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

    Matches loudness without changing the filter behavior itself.

  • focus

    Active

    Sets the amount of high-shelf attenuation.

    Higher values preserve more top end; lower values tame more high-frequency bite.

  • motion

    Active

    Moves the turnover frequency of the high-shelf cut and the center of the peaking cut upward.

    Targets harsher bands higher or lower in the upper mids and treble.

  • rate

    Active

    Sets the depth of the upper-mid peaking cut.

    Increases or reduces how much sharp presence is pulled back; it is not a time-based rate control in the current code.

Analysis

Code-derived notes

Current implementation is a distinct static harshness-taming EQ path rather than a moving filter or envelope effect.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • filterCore
  • phraseMono
  • previewShiftSamples
  • pickedVoice
  • fund
  • pickEnv
  • ampEnv
  • triggerAt
  • maxDelaySamples

Inactive helpers

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

Warnings

No current warnings are attached to this effect.

Source

  • library/filter-wah-envelope/anti-icepick-tamer.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 84

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