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Uni → Bi

Bitwig Platform

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

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

What it does

Uni → Bi doubles and recenters a unipolar signal. Input 0 becomes -1, 0.5 becomes bipolar zero, and 1 becomes +1, making positive-only sources useful for bipolar modulation destinations.

Controls and ports

In receives a nominal 0-to-1 signal, and Out returns its -1-to+1 equivalent.

Practical uses

  • Convert an envelope, probability, Steps lane, or other unipolar source into centered bipolar modulation.
  • Make a 50% midpoint behave as no modulation while lower and higher values move in opposite directions.
  • Prepare a unipolar control signal for phase, pan, pitch-offset, or signed waveshaping operations.

Things to know

  • The nominal anchor mapping is 0→-1, 0.5→0, and 1→+1.
  • The conversion doubles deviations around 0.5, so noise and overshoot are doubled too.
  • Clamping versus extrapolation outside 0 to 1 remains unverified.
  • No dedicated Nitro implementation has been recovered.

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=2*in-1. This is the unique linear mapping through the documented endpoints and midpoint. It remains a functional inference until a live pass establishes out-of-range handling, floating-point edge behavior, and whether the operation is lowered directly into the Grid graph.

Open questions

  • Measure -1, 0, 0.25, 0.5, 0.75, 1, and 2 to distinguish extrapolation from clamping.
  • Test signed zero, stereo independence, NaN/infinity, voice scope, and latency.
  • 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 Uni → Bi module, Bitwig Grid Uni → Bi, Uni → Bi Grid module