Velo Mult

A velocity-sensitive gain stage with adjustable depth, slew time, and response curve.

What it does #

Velo Mult attenuates its input according to the current note velocity. Maximum velocity leaves the signal at its maximum level; lower velocities reduce it by an amount set with Depth. Slew controls how quickly a new velocity gain is reached, and Response chooses how velocity is translated into level.

Controls and ports #

Control	Label	Official description
depth	Depth	Downward range for scaling. At '0 %', velocity is ignored, and the signal passes at maximum (read: unattenuated). At any other setting, a maximum velocity will pass a maximum signal, and a lower velocity attenuates the signal relatively.
slew	Slew	Amount of time before the new velocity level is reached
response	Response	Transition curve, for different uses:

Practical uses #

• Make an oscillator or completed voice respond dynamically to keyboard velocity.
• Scale modulation depth, filter movement, or noise level per note rather than only changing final loudness.
• Use Slew to avoid an abrupt gain jump when velocity changes inside a continuing voice.

Things to know #

• At Depth 0%, velocity is ignored and the input passes at maximum level.
• At any nonzero Depth, velocity 1 remains the maximum reference and lower velocities attenuate relative to it.
• The recovered components show both a linear blend response and a decibel-domain response; the visible Response selector likely chooses among related laws, but the complete wrapper is missing.
• The exact velocity source, response labels, Slew law, note-retrigger behavior, and voice stealing need confirmation.

Technical details #

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

Two Nitro helpers match the documented response family. envelope/Velocity Mix computes out=in*((1-mix)+velocity*mix), a direct linear interpolation between unity and velocity gain. math/velocity_amp_multiplier computes out=in*10^(((velocity-1)*rangeDb)/20), so velocity 1 is unity and velocity 0 is attenuated by Range dB. lag/lag_Grid is a plausible constant-slope Slew component, but the complete Velo Mult wrapper and Response-mode routing have not been recovered.

Nitro port	Type
in	InputAudioPortType
velocity	InputAudioPortType
mix	InputAudioPortType
out	OutputAudioPortType

Open questions #

• Record every Response label and fit its velocity curve at velocities 0, 0.25, 0.5, 0.75, and 1 across several Depth values.
• Measure Slew timing and shape for rising and falling velocity, retriggers, legato, voice stealing, and startup.
• Confirm the component pairing, Depth units/range, velocity source, stereo behavior, and output smoothing.

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 #

• Grid Modules course reference

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