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Official effect

Prism Rotor

Currently a modulated micro-delay widener rather than a dedicated rotor speaker model.

The current rotor-style original does not yet add separate tremolo, echo, or rotor cabinet behavior. It crossfades each channel toward a short modulated delay tap, with `depth` setting the modulation depth, `rate` setting the two LFO speeds, and `tone` raising the delayed-branch gain. The result then passes through the shared DC-blocking, output-gain, and soft-limiting stage.

  • ninetysix Originals
  • Library #280
  • 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 rotor-style original does not yet add separate tremolo, echo, or rotor cabinet behavior. It crossfades each channel toward a short modulated delay tap, with `depth` setting the modulation depth, `rate` setting the two LFO speeds, and `tone` raising the delayed-branch gain. The result then passes through the shared DC-blocking, output-gain, and soft-limiting stage.

  • ninetysix Originals
  • 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 the shared 19-sample right-channel offset before each side is blended toward its own LFO-modulated short-delay tap.

  1. 1internal picked-string demo phrase
  2. 2shared stereo spread with a short right-channel delay
  3. 3left LFO-modulated short-delay tap
  4. 4right LFO-modulated short-delay tap
  5. 5per-channel dry / delay crossfade
  6. 6DC blocker
  7. 7output gain trim
  8. 8final tanh limiter

Preview source

An internally generated picked-string phrase is widened to stereo with the shared 19-sample right-channel offset before each side is blended toward its own LFO-modulated short-delay tap.

Effect core

Per-channel LFO-modulated short-delay widening crossfaded against the dry preview phrase.

Signal path

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

  • internal picked-string demo phrase
  • shared stereo spread with a short right-channel delay
  • left LFO-modulated short-delay tap
  • right LFO-modulated short-delay tap
  • per-channel dry / delay crossfade
  • 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: Crossfades or scales the current wet layer against the dry stereo preview source.
  • output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
  • depth: Sets how far the left and right short-delay taps move around their base times.
  • rate: Sets the LFO speeds driving the left and right delay modulation.
  • tone: Raises the gain of the modulated delay taps.

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
  • leftFx
  • rightFx
  • phraseMono

Controls

Audible controls in this DSP

  • mix

    Active

    Crossfades or scales the current wet layer against the dry stereo preview source.

    Higher settings make the processed layer more dominant relative to the dry phrase.

  • output_gain_db

    Active

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

    Matches loudness without changing the underlying effect structure.

  • depth

    Active

    Sets how far the left and right short-delay taps move around their base times.

    Higher settings make the modulation sweep wider and more noticeable.

  • rate

    Active

    Sets the LFO speeds driving the left and right delay modulation.

    Higher settings make the movement cycle faster.

  • tone

    Active

    Raises the gain of the modulated delay taps.

    Higher settings bring the moving delayed layer farther forward.

Analysis

Code-derived notes

Current implementation shares the exact same modulated short-delay architecture with Firefly. There is no dedicated rotor cabinet motion yet.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • leftFx
  • rightFx
  • phraseMono
  • previewShiftSamples
  • leftWet
  • rightWet
  • pickedVoice
  • slowA
  • maxDelaySamples
  • slowB
  • fund
  • pickEnv
  • ampEnv
  • triggerAt

Inactive helpers

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

Warnings

No current warnings are attached to this effect.

Source

  • library/ninetysix-originals/prism-rotor.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 280

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

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