Fizz

A nested character filter that places several formant-like resonant nodes inside a stereo low-pass response.

What it does #

Fizz combines low-pass filtering with nested resonant or all-pass-like stages. Color moves and varies the internal peaks, producing tones that range from a solid low-pass bump to nasal formants, sparkling resonances, or phaser-like shimmer.

Controls and ports #

Control	Label	Official description
alt	Alt	Uses a variation of circuit, with different orientation and frequency responses
color	Color	Shift control for the placement and variation of formant peaks

Practical uses #

• Sweep Color slowly on sustained material to reveal the moving internal peaks.
• Use moderate Resonance on pads or noise for stereo shimmer without relying on a separate phaser.
• Toggle Alt after setting Cutoff and Color, because it changes the circuit response rather than adding a subtle variation.

Things to know #

• Fizz is a character circuit, not a conventional low-pass with one clean resonant peak.
• Color changes the placement and variation of multiple formant peaks.
• Alt changes circuit orientation and frequency response, so its effect depends strongly on Cutoff, Color, and Resonance.
• No dedicated Nitro body was recovered, so exact topology, stereo offsets, nonlinear stages, and control laws remain unverified.

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 identifies a nested, stereo, resonant low-pass circuit involving multiple peaks and all-pass/formant-like behavior. A safe conceptual model is a low-pass core plus several coupled frequency-selective stages whose positions are controlled by Color and whose orientation changes under Alt. This explains the audible bump, nasal, sparkling, and phasey regions without claiming a specific equation. The local Nitro corpus contains no dedicated Fizz implementation, so pole count, feedback routing, nonlinearity, oversampling, and stereo coupling require measurement.

Open questions #

• Measure magnitude, phase, impulse, and stereo response across Cutoff, Color, Resonance, Drive, and Alt.
• Determine peak count, harmonic or inharmonic spacing, topology changes, self-oscillation, and nonlinear behavior.
• Test modulation smoothing, latency, sample-rate scaling, mono compatibility, initialization, and CPU cost.

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.