Ripple

A hyper-resonant feedback/feedforward character filter designed for strong peaks, subharmonics, unstable motion, and distortion.

What it does #

Ripple combines feedback and feedforward paths around a selectable filter model. Resonance can be positive or negative for different colors, the two Alt controls reshape the return and forward paths, and Lo-fi loosens tuning while reducing processor load.

Controls and ports #

Control	Label	Official description
mode	Mode	Model for this filter:
reso	Reso	Amount of feedback applied within the filter, with positive and negative values providing different colors
fb_alt	Fb Alt	Modifies the feedback circuit, which could either dampen or expand resonance (depending on the other parameters)
ff_alt	Ff Alt	Modifies the feedforward circuit, which could either dampen or expand resonance (depending on the other parameters)
lo-fi	Lo-Fi	Loosens the tuning a bit (and reduces the processor load)

Practical uses #

• Move Resonance slowly through zero to compare positive and negative feedback colors.
• Treat FB Alt and FF Alt as interacting circuit controls and explore them one at a time before modulating both.
• Use Lo-fi deliberately for rougher subharmonic or distorted textures, not only as a CPU-saving switch.

Things to know #

• Ripple is intentionally capable of extreme feedback, subharmonics, and distortion; output level can change abruptly.
• Positive and negative Resonance are different feedback polarities, not interchangeable amounts.
• FB Alt and FF Alt can either damp or enlarge resonances depending on the other settings.
• Lo-fi changes tuning precision as well as processing load, and the exact internal models are not exposed in the local Nitro corpus.

Technical details #

No Nitro implementation has been confirmed for this visible module. The behavior is described conservatively from module metadata and editorial research.

Installed metadata establishes a model-selectable, hyper-resonant circuit with distinct feedback and feedforward modifications, bipolar feedback, and a lower-precision mode. Those controls imply at least one recursive path plus a forward cancellation or reinforcement path, capable of period multiplication/subharmonics and nonlinear limiting. Without a dedicated Nitro body, it is not safe to specify the filter topology, delay lengths, coefficient quantization, oversampling, or exact reason Lo-fi reduces CPU.

Open questions #

• Document every Model and measure magnitude, phase, impulse, pitch tracking, and distortion across bipolar Resonance.
• Isolate FB Alt and FF Alt to recover their routing, stability boundaries, subharmonic conditions, and interaction with Drive.
• Quantify Lo-fi tuning error and CPU reduction, plus stereo behavior, smoothing, latency, sample-rate scaling, and overload recovery.

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.