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Voice Stack Info

Bitwig Platform

Voice Stack Info module panel in Bitwig Grid
Voice Stack Info in Bitwig Grid 6.0.6.

Per-stack index and total stack count supplied by the current Grid voice context.

What it does

Voice Stack Info identifies which stacked copy is processing the current sample and how many stacks the device is using. These values let one patch assign different pitch, pan, phase, rhythm, or timbre to every stack without separate patch copies.

Controls and ports

Stack Index outputs the current zero-based stack number as a polyphonic value; Stack Size outputs the configured total. The module has no adjustable controls because both values come from the voice allocator.

Practical uses

  • Normalize Index by Size to spread stacks across pitch, pan, or phase.
  • Feed Index into Select or equality logic to give particular stacks unique behavior.

Things to know

  • Voice stacks duplicate each played voice; they are different from ordinary polyphonic notes.
  • Index is expected to run from 0 through Size-1 and can differ for simultaneous processing lanes.
  • Increasing stack size multiplies active DSP work and therefore CPU cost.

Technical details

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

The related voice_logic/voice_stack_spread component accepts integer stack_index and stack_size, confirming the expected host values. It calculates centered spread 2*index/(size-1)-1 for size above one and zero otherwise. Voice Stack Info itself exposes the unprocessed index and size; its direct wrapper is not recovered.

Open questions

  • Verify exact output names, integer scaling, maximum size, size-one behavior, dynamic size changes, voice allocation, and all Grid device modes.

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 Voice Stack Info module, Bitwig Grid Voice Stack Info, Voice Stack Info Grid module