Pitch Buss
Bitwig Platform
A six-input pitch summer with semitone-scaled attenuators and full-range Thru paths.
What it does
Pitch Buss combines several independent contributions into one pitch signal. Each input can be scaled over a bipolar semitone range, while inputs 2 through 6 can instead pass a complete pitch signal unchanged with their Thru buttons.
Controls and ports
| Control | Label | Official description |
|---|---|---|
attenuator1 |
Attenuator1 | Semitone-range scaling of input 1 |
thru2 |
Thru2 | When enabled, passes this input signal thru with no attenuation. This is useful for true, full-range pitch signals. Note: This option is only available for inputs 2 thru 6. |
Practical uses
- Add a full-range Root Key or melody pitch through Thru and mix smaller LFO, envelope, or random offsets through attenuated inputs.
- Build one readable pitch hub instead of chaining many Add and Multiply modules.
- Combine a sampled melodic value, a fixed root, vibrato, and an octave or chord offset before final quantization.
Things to know
- Use Thru for an input that already carries meaningful semitone pitch values; attenuated inputs are intended to turn normalized modulation into bounded pitch offsets.
- The buss adds all active contributions and does not automatically quantize, clamp, or limit the resulting register.
- Inputs 2 through 6 have Thru; installed documentation does not expose that option for input 1.
- The automatic Hard Kick pitch 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.
The visible contract is a linear sum. For a normalized modulation input, an attenuated lane is expected to contribute term_i = input_i * amount_st_i/120, because Amount is displayed in semitones while the raw pitch cable uses 1/120 per semitone. A Thru lane contributes the already formatted raw pitch signal unchanged. The output is sum(term_i). No exact Nitro body has been found.
Open questions
- Verify every attenuator's exact range, default, resolution, and equation at input values -1, -0.5, 0, 0.5, and 1.
- Measure whether Thru fully bypasses the knob, how switching is smoothed, and whether an unconnected lane contributes exactly zero.
- Test stereo lanes, over-range inputs, summing precision, non-finite values, 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.
Related material
Return to Bitwig Grid Modules or the Grid Modules course lesson.
Also matches: Bitwig Pitch Buss module, Bitwig Grid Pitch Buss, Pitch Buss Grid module