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Official effect

Crossfeed

Blends short delayed taps from the opposite side into each channel for simple crossfeed.

The current crossfeed path takes a short delayed tap from the opposite stereo channel and mixes that into each side. `mix` sets the overall crossfeed amount, `width` raises the borrowed-channel tap level, and the declared `motion` and `tone` controls are inactive. The result then passes through the shared DC-blocking, output-gain, and soft-limiting stage.

  • Stereo, Utility & Routing
  • Library #260
  • 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 crossfeed path takes a short delayed tap from the opposite stereo channel and mixes that into each side. `mix` sets the overall crossfeed amount, `width` raises the borrowed-channel tap level, and the declared `motion` and `tone` controls are inactive. The result then passes through the shared DC-blocking, output-gain, and soft-limiting stage.

  • Stereo, Utility & Routing
  • 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 channel receives a short delayed tap from the opposite side.

  1. 1internal picked-string demo phrase
  2. 2shared stereo spread with a short right-channel delay
  3. 3short delayed opposite-channel tap into left side
  4. 4short delayed opposite-channel tap into right side
  5. 5DC blocker
  6. 6output gain trim
  7. 7final tanh limiter

Preview source

An internally generated picked-string phrase is widened to stereo with the shared 19-sample right-channel offset before each channel receives a short delayed tap from the opposite side.

Effect core

Opposite-channel delayed taps blended back into each side for simple crossfeed.

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
  • short delayed opposite-channel tap into left side
  • short delayed opposite-channel tap into right side
  • 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.
  • width: Raises the level of the opposite-channel delayed tap inside each side.
  • motion: Declared in the shared control set but unused in the current preview code.
  • tone: Declared in the shared control set but unused in the current preview code.

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.

  • width

    Active

    Raises the level of the opposite-channel delayed tap inside each side.

    Higher settings pull more of the other side into each ear.

  • motion

    Active

    Declared in the shared control set but unused in the current preview code.

    Changing it currently has no effect on the sound.

  • tone

    Active

    Declared in the shared control set but unused in the current preview code.

    Changing it currently has no effect on the sound.

Analysis

Code-derived notes

Current implementation uses delayed opposite-channel taps and leaves the declared motion and tone controls inactive.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • leftFx
  • rightFx
  • phraseMono
  • previewShiftSamples
  • crossA
  • crossB
  • pickedVoice
  • maxDelaySamples
  • crossDelayA
  • crossDelayB
  • 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/stereo-utility-routing/crossfeed.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 260

More In Stereo, Utility & Routing

Continue through the library

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

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Currently the same short per-side delay widener as Stereo Image Shaper rather than a true mid/side matrix.

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Speaker Sim

Applies a speaker-style band-pass contour and top-end trim to simulate a simpler output stage.

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