Logic (yellow). A bistate signal, often for triggering an event or setting a state. For in ports, any signal level at or above +0.5 is treated as high logic, and anything below is assessed as low logic. Logic in ports are only sensitive to these state changes so jumping from 0 to +0.5 will register, but a slow ramp from +0.5 to +1 means nothing. For out ports, a high-logic state is expressed as +1, and a low-logic state is transmitted as 0.

For short, we may sometimes refer to a trigger, which is the transition from a low-logic state to a high-logic state. This signal is often used to start a function.

Phase (purple). A unipolar signal from 0 to just below 1, often for driving data lookup. For in ports, signals are wrapped into the range. For example, a value of +1.02 would be used as +0.02, and a value of -0.3 would be treated as +0.7.

Pitch (orange). A bipolar signal used by Bitwig for specifying pitch. 0 represents "middle C" (C3) with each change of ±0.1 representing an octave, so a typical signal range of -1 to +1 represents twenty octaves.

	Note
	While pitch signals in The Grid are generally used as is, outputting notes via the Note Out module only allows the permissible MIDI note range (see Note Out).

Untyped signal (often red). The most common signal type, of unspecified range and function. Inputs of mixers or filters or math modules, virtually all outputs that aren't implementing either logic, phase, or pitch signal characteristics — they are all most often untyped and thereby follow the color set for the module they are on.

	Note
	Generic signal modules are normally red, with typical control modules defaulting to turquoise. So ports of either color are untyped signal ports. And when a module has multiple untyped in ports, those ports will adopt the color of an incoming patch cord.

Secondary untyped signal (blue). When a module has two kinds of untyped signal in or out ports, the secondary port is shown in blue. For example, a merge module might have multiple primary in ports (using the module color) for the various signals to route and one control input (colored blue) for selecting which input is passed thru.

Most Oscillator modules (Pulse, Sawtooth, Sine, Triangle, Union, Wavetable, Sub, Bite, Phase-1, Scrawl, and Swarm) have frequency offset values, set in Hertz (Hz). When this value’s polarity signal (± when the value is positive, ∓ when it's negative) is clicked, the frequency offset is inverted for the right channel. In the Phase category, the Phasor module (a good starting point for building your own oscillators with other Phase and Data modules) also has this same option.

The S/H LFO (under Random) as well as LFO, Curves, and Wavetable LFO (under LFO) all have a purple phase parameter, which defaults to 0 º. And to the right of that phase control is an offset control for the right channel, which starts at +0 º and is thus grayed out by default. Both parameters are visualized on the LFO module.

In the Mix category, Stereo Split and Stereo Merge allow you to separate and reconstruct a signal as left–right and/or mid–side pairs.

Also in the Mix category, LR Gain provides independent level controls (±200%) for the left and right channels of any signal passing thru.

In the Random category, Noise also has a stereo option (via the clickable on-panel stereo icon). This creates independent signals for the left and right channels.

Several modules in the Level category (Value, Amplify, Attenuate, Bias, Bend, and Pinch) and in the Phase category (Ø Bend, Ø Pinch, Ø Shift, and Ø Skew) have an Inspector parameter called Stereo-ize, which inverts the value used for operation on the right channel. The same is true for the Pitch constant module and other modules in the Pitch category (Freq → Pitch and Pitch→ Freq).

Flanger+ and Phaser+ (Delay/FX) both have a specialized Stereo-ize option, which inverts the right modulation signal. This works whether that classic modulation signal is coming from the default internal LFOs, or if you have connected a signal to the Mod In port.

The Ø Reverse (Phase) module as well as Invert and Reciprocal (Math) and a few additive processors in the Pitch category (Octaver, Ratio, and Transpose) have a Stereo-ness parameter, which sets whether the processing is applied to the entire signal (Mono) or if it is just done on one channel (Left or Right).

To visualize any stereo signal, the Oscilloscope (Display) module has a Stereo Mode button between the two in ports. When enabled, both traces are used for first in port, painting the left channel in the chord's color and the right channel in white. If you only see one trace, the signal is mono.

AR, AD, ADSR, and Pluck (Envelope). For each of these envelope generators, a voice will stay active as long as the envelope has not reached the end of its release (for AR and ADSR) or decay (for AD) stage — or, in the case of Pluck, whichever gets to zero first. Affect Voice Lifetime is enabled for these envelopes by default, making them the first determinant of how long to keep voices alive.

Note In (I/O). When this module's Affect Voice Lifetime is enabled, a voice will be kept alive for as long as its note gate signal is on (in a high-logic state). Affect Voice Lifetime is enabled by default.

Gate In (I/O). Identical to the behavior of Note In, Affect Voice Lifetime will keep any voice on while its note gate signal is on. For Gate In, this parameter is disabled by default.

Audio Out (I/O). When this module's Affect Voice Lifetime is enabled, a voice will be kept alive until it has fallen below the Silence Threshold setting for the designated Hold Time. The Affect Voice Lifetime parameter is disabled by default.