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Bi → Uni

Bitwig Platform

Bi → Uni module panel in Bitwig Grid
Bi → Uni in Bitwig Grid 6.0.6.

A range converter that maps nominal bipolar values from -1…+1 into unipolar values from 0…1.

What it does

Bi → Uni recenters and halves a bipolar signal. Negative full scale becomes 0, bipolar zero becomes 0.5, and positive full scale becomes 1, preserving the relative position inside the range.

Controls and ports

In receives a nominal -1-to+1 signal, and Out returns the corresponding 0-to-1 value.

Practical uses

  • Convert a bipolar LFO into a VCA, probability, wavetable-position, or other unipolar control.
  • Prepare a signal for Value Scaler, Level Scaler, Merge, or another module expecting 0 through 1.
  • Translate audio-rate bipolar modulation into a positive-only gain control before multiplication.

Things to know

  • The nominal anchor mapping is -1→0, 0→0.5, and +1→1.
  • This conversion adds a 0.5 bias; on audio it therefore introduces DC and is primarily a control-range utility.
  • Clamping versus linear extrapolation outside -1 to +1 has not been established.
  • No dedicated Nitro body has been recovered, suggesting a graph-level arithmetic primitive.

Technical details

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

The canonical affine conversion is out=0.5*in+0.5. This is the only linear mapping through the three documented anchor points. The equation is strong functional inference; a live measurement must determine whether Bitwig clamps inputs outside the nominal bipolar range and how it handles non-finite values.

Open questions

  • Measure -2, -1, -0.5, signed zero, 0.5, 1, and 2 to distinguish extrapolation from clamping.
  • Test stereo independence, NaN/infinity, voice scope, latency, and exact floating-point precision.
  • Locate any inlined implementation or confirm graph-level lowering.

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.

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

Also matches: Bitwig Bi → Uni module, Bi → Uni Grid module, Bitwig Grid Bi → Uni