Topics / Bitwig Studio / Bitwig Grid / Bitwig Grid Modules / Grid Pitch Modules / Pitch → Freq

Pitch → Freq

Bitwig Platform

Pitch → Freq module panel in Bitwig Grid
Pitch → Freq in Bitwig Grid 6.0.6.

An exponential converter from Bitwig's semitone pitch signal to frequency in hertz or kilohertz.

What it does

Pitch → Freq converts note-oriented pitch values into linear frequency numbers for filters, delays, analyzers, and custom DSP calculations. Unit changes only the numerical output scale between Hz and kHz.

Controls and ports

In accepts a Bitwig pitch signal with C3 at zero. Unit selects Hz or kHz, optional Stereo-ize behavior can create a stereo frequency relationship, and Out emits the converted frequency value.

Practical uses

  • Turn a melody pitch into an exact frequency for a resonator, filter coefficient calculation, or frequency readout.
  • Derive keytracked modulation in linear hertz rather than semitone space.
  • Convert a pitch through custom frequency arithmetic and return with Freq → Pitch.

Things to know

  • Each raw +0.1 doubles frequency and each -0.1 halves it; the UI displays those changes as ±12 semitones.
  • Raw pitch 0 is C3 at approximately 261.6256 Hz, +0.075 is A3 at 440 Hz, and +0.1 is C4 at approximately 523.2511 Hz.
  • Hz and kHz contain the same information; kHz output is simply hertz divided by 1000.
  • The Hard Kick candidate is unrelated and has been rejected.

Technical details

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

For raw Grid pitch p, the conversion is freq_hz = 261.625565*2^(10*p), equivalently 440*2^((120*p-9)/12). In kHz mode the result is divided by 1000. Recovered DSP repeatedly uses 440*2^((note-69)/12), while fromSemitones establishes p=(note-60)/120. Overflow policy and Stereo-ize routing remain unrecovered.

Open questions

  • Measure exact outputs at raw pitch -1, -0.1, 0, +0.075, +0.1, +1, infinity, NaN, and both signed zeros.
  • Test overflow, underflow, Unit switching, sample accuracy, and round-trip error through Freq → Pitch.
  • Verify the advertised stereo detune or Stereo-ize option, lane handling, and voice scope.

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 Pitch → Freq module, Bitwig Grid Pitch → Freq, Pitch → Freq Grid module