Flanger+

A swept short-delay comb effect with feedback, external modulation, stereo options, and four Character models.

What it does #

Flanger+ mixes audio with a very short delayed copy and moves that delay, creating a harmonic series of sweeping notches and peaks. Feedback sharpens the comb pattern, while Character, Color, stereo, polarity, and Dirt options change its motion and tone.

Controls and ports #

Character selects the model. Color sets the base delay region, FB controls recursive emphasis, Speed and Depth drive the internal sweep, Mix blends the result, and auxiliary switches select stereo/polarity/Dirt behavior. An external modulation input can replace or influence the internal movement.

Practical uses #

• Use low Depth and Feedback for subtle moving comb color on drums, pads, or noise.
• Raise Feedback and sweep Color slowly for the classic jet-plane flange.
• Feed a custom phase or modulation signal to synchronize the sweep or build non-periodic motion.

Things to know #

• A flanger uses shorter delay times and stronger comb interaction than a typical chorus.
• Positive and inverted combinations place comb peaks and notches differently.
• High Feedback can ring strongly and may become unstable depending on Character and Dirt settings.
• The wrapper reverses the visible Center/Color value before passing it to the processor as 1 - center.
• The four Character algorithms are selected inside an imported processor, so their precise delay and nonlinear models remain open.

Technical details #

A high-confidence Nitro implementation candidate supports the technical summary, but the visible-module mapping remains inferred.

The exact mod_fx/flanger_module wrapper forwards Character type, stereo, inverted, Dirt, and external-override switches during initialization. Per block it passes 1-center, Feedback, Rate, Depth, and Mix; per 4x sub-sample it forwards a stereo external-modulation pair and calls the imported flanger's tick. This establishes a stateful stereo modulated-delay/feedback processor and the control wiring, but the imported Character-specific delay, interpolation, feedback, and Dirt equations are not present in the wrapper body.

Nitro port	Type
input	InputAudioPortType
type	InputValuePortType
stereo	InputValuePortType
inverted	InputValuePortType
dirty	InputValuePortType
externalOverride	InputValuePortType
center	InputAudioPortType
feedback	InputAudioPortType
rate	InputAudioPortType
externalModulation	InputAudioPortType
depth	InputAudioPortType
mix	InputAudioPortType
output	OutputAudioPortType

Open questions #

• Measure delay range, sweep law, feedback polarity/gain, Dirt spectrum, Mix law, and every Character response.
• Confirm external-modulation scaling and whether its connection replaces or adds to the internal LFO.
• Test stereo offsets, inversion, latency, reset transients, self-oscillation, interpolation, and fast automation.

Version and sources #

Checked against Bitwig Studio 6.0.6. This page combines Bitwig's module metadata, the existing Grid course and guides, and Nitro analysis where the mapping is strong enough to support a technical statement.

Related material #

• Grid Modules course reference

Return to Bitwig Grid Modules or the Grid Modules course lesson.