Mixer

A six-channel stereo mixer with per-channel level, pan, enable, and solo controls.

What it does #

Mixer adds as many as six Grid signals into one stereo output. Every channel can be scaled, positioned in stereo, muted, or soloed, making the module useful as both an audio mixer and a compact control-signal router.

Controls and ports #

Control	Label	Official description
signal_in	Signal In	Channel 1 signal in
signal_in2	Signal In2	Channel 2 signal in
signal_in3	Signal In3	Channel 3 signal in
signal_in4	Signal In4	Channel 4 signal in
signal_in5	Signal In5	Channel 5 signal in
signal_in6	Signal In6	Channel 6 signal in
volume	Volume	Volume scaling of channel 1
panning	Panning	Stereo panning position of channel 1
solo_mute	Ch 1 Solo & Active [toggles]	Solo status of channel 1 (S), and whether channel 1 is audible or not (speaker icon)

Practical uses #

• Combine several oscillators or parallel effect paths and balance them before a shared filter or output.
• Use per-channel Pan to distribute voices or layers without adding separate Pan modules.
• Mix modulation sources at controlled depths; Solo and enable are useful while designing or performing a patch.

Things to know #

• If any connected channel is soloed, non-soloed channels are suppressed even when their speaker controls are enabled.
• A channel marked Solo only activates the global solo state when that channel input is connected.
• Enable and solo changes are faded rather than switched instantaneously, reducing clicks on audio signals.
• The recovered fade time is 10 ms, while level and pan are applied directly in the recovered body.
• The panner uses Bitwig's hybrid quadratic law, not a textbook linear or sine/cosine law.

Technical details #

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

The exact grid/mix/grid_mixer body contains six channels. It first ORs the Solo flags of connected channels. A channel target is audible when it is connected and either soloed, or enabled while no connected Solo is active. Its internal audible level moves toward that Boolean target by 1/(0.01*sampleRate) per sample, producing a 10 ms linear ramp. For pan it forms the stereo pair p = <1-pan, 1+pan> and applies panHybrid(p) = p*(1.18-0.18*p). Each contribution is input * level * audibleRamp * panHybrid(p), and the six contributions are summed.

Nitro port	Type
connected	InputValuePortType
in	InputAudioPortType
level	InputAudioPortType
pan	InputAudioPortType
enable	InputValuePortType
solo	InputValuePortType
out	OutputAudioPortType

Open questions #

• Measure the visible level range, defaults, pan labels, and whether control changes receive host-side smoothing before the Nitro body.
• Verify behavior when channel count changes, a soloed cable is disconnected, or several channels switch state on the same sample.
• Measure stereo input behavior, overload/headroom, summing precision, and voice-local versus shared mixer state.

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.