How It Works
Technical view
The current base delay family runs each channel through a simple feedback delay line with independent left and right times, then adds that repeat branch back over the dry source. `feedback` sets the echo-loop recirculation, `tone` opens the damping inside that loop, and `time` stretches the two taps, so these patches currently share one straightforward stereo feedback-echo architecture. There is no envelope follower or ducking gain stage in the current code.
- Delay & Echo
- 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 delay core.
- 1internal picked-string demo phrase
- 2stereo spread with a short right-channel delay
- 3independent left and right feedback delays
- 4loop damping
- 5repeat branch added over the dry source
- 6DC blocker
- 7output gain trim
- 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 delay core.
Effect core
Stereo feedback echo with independent left and right delay lines and loop damping.
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
- independent left and right feedback delays
- loop damping
- repeat branch added over the dry source
- 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: Scales the repeat branch above the always-present dry phrase.
- output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
- time: Sets the lengths of the left and right delay taps.
- feedback: Raises the feedback coefficients inside the echo loops.
- tone: Raises the damping cutoff inside the echo loops so less high end is lost each pass.
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
Scales the repeat branch above the always-present dry phrase.
Raises repeat level without fully removing the original attack.
Applies final post-effect level trim after DC blocking and before the output limiter.
Matches loudness without changing the actual delay structure.
Sets the lengths of the left and right delay taps.
Moves the repeats from shorter slap-like spacing toward longer echo intervals.
Raises the feedback coefficients inside the echo loops.
Adds more repeat count and makes the tail hang on longer.
Raises the damping cutoff inside the echo loops so less high end is lost each pass.
Makes the repeats darker at low settings and clearer at high settings.
Analysis
Code-derived notes
Current implementation shares the same straightforward stereo feedback-echo core across Digital Delay, Tape Echo, Dual Delay, Ducked Delay, Band Delay, Phase Delay, and Slow-Attack Delay. Ducked Delay does not yet duck under the dry signal.
Active blocks
- demo
- fx
- outputStage
- leftDemo
- rightDemo
- leftFx
- rightFx
- phraseMono
- previewShiftSamples
- leftWet
- rightWet
- pickedVoice
- echoOnly
- delayA
- duck
- delayB
- fund
- pickEnv
- ampEnv
- triggerAt
- combLP
- maxDelaySamples
Inactive helpers
- synthVoice
- organVoice
- bellVoice
- softsat
- quantize
- diffuser
Warnings
No current warnings are attached to this effect.
Source
- library/delay-echo/ducked-delay.dsp
- Output stage: DC blocker -> output gain trim -> final tanh limiter
- Library position: 137