Flanger

What it does

Modulated short delay — jet-whoosh sweep.

Wraps daisysp::Flanger. Delay centre is set at init; LFO Rate (Hz), Depth and Feedback are audio-rate so their ports can be modulated.

Parameters

• Rate (Hz)

  rate
  Default 0.3Range 0.01 … 10

  How quickly the delay time is swept back and forth, in Hz. Very slow settings, a fraction of a Hz, give the long jet-plane sweep; a few Hz turns it into an obvious wobble; faster still and it stops sounding like a sweep and starts adding its own vibrato-like sidebands. Per-sample, so the port can be modulated.

• Depth

  depth
  Default 0.5Range 0 … 1

  How far the delay time travels on each sweep. Small values keep the comb notches in a narrow band, which is subtle and metallic; large values sweep them across the whole spectrum for the dramatic whoosh. At 0 the delay sits still and you get a fixed comb filter rather than a flanger.

• Feedback

  feedback
  Default 0.2Range 0 … 1

  How much of the delayed signal is fed back into the delay line. Low values give a gentle sweep; raising it sharpens the comb notches into distinct resonant peaks, so the effect becomes more metallic and pronounced, and near the top it rings and whistles as the sweep passes. Per-sample, so it can be modulated.

• Delay center

  delay
  Default 0.75Range 0 … 1

  Where the centre of the sweep sits within the available delay range. Short delays put the comb notches high up and sound thin and metallic; longer ones move them down and give a deeper, more hollow character. It is the difference between a flanger that shimmers and one that sounds like a tube. ⚠ Baked at build time, so it sets the character of the effect rather than being something to sweep.

Ports

Audio Control

Inputs

Audio In

Source.

Rate

LFO frequency in Hz.

Depth

Sweep depth, 0–1.

Feedback

Resonance, 0–1.

Outputs

Audio Out

Flanged signal.