Blend

A two-input crossfader with selectable equal-gain and equal-power-shaped curves.

What it does #

Blend turns one continuous Mix value into complementary gains for two signals. At the ends only one input is heard; between them both inputs contribute. Equal Gain makes the two gains add to one, while Equal Power uses a curved law intended to avoid the level dip that unrelated signals can produce at the center of a linear crossfade.

Controls and ports #

Control	Label	Official description
mix	Mix	Balance between in 1 and in 2, as a ratio
mode	Blending Mode [equal gain or equal power]	Power rule for crossfading the two signals

Practical uses #

• Morph between two oscillators, waveshapers, filters, or complete processing branches with one modulation signal.
• Build a dry/wet control by sending the original signal to one input and the processed signal to the other.
• Crossfade between control or phase signals as well as audio; Grid cables are not restricted to conventional audio roles.

Things to know #

• At Mix 0 the output is In 1, and at Mix 1 it is In 2.
• Equal Gain is mathematically linear, but two uncorrelated signals commonly sound quieter around the center because their powers do not add linearly.
• Equal Power can raise the center level when both inputs are identical or strongly correlated; it does not guarantee constant peak level for every source pair.
• The recovered equal-power implementation is a polynomial curve rather than a literal sine/cosine crossfade.
• The exact visible wrapper that switches between the two recovered helpers has not been found, so the pairing is high-confidence but still inferred.

Technical details #

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

The two matching Nitro helpers share ports in1, in2, x, and out. mix/mix_equal_gain computes out = in1*(1-x) + in2*x. mix/mix_equal_power defines q = x^2-x-1, then uses gains (x-1)q for In 1 and -xq for In 2. Both reach exact endpoint gains of (1,0) and (0,1); at x=0.5 the polynomial gives approximately 0.625 to each input. Mode selection is attributed to the visible wrapper and is not present inside either helper body.

Nitro port	Type
in1	InputAudioPortType
in2	InputAudioPortType
x	InputAudioPortType
out	OutputAudioPortType

Open questions #

• Confirm the helper pairing and visible mode index in the complete Blend wrapper.
• Measure Mix clamping or extrapolation outside 0 to 1, stereo independence, parameter smoothing, and audio-rate modulation.
• Compare correlated, polarity-inverted, and uncorrelated inputs to document the perceived center level of both 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.

Related material #

• Grid Modules course reference

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