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LFO Crossfade

This is a time-domain LFO crossfade — the simplest crossmorph operation in the category.

Parameters

ParameterRangeDefault
Lfo Rate0.01 – 50.01.0
Lfo Depth0.0 – 1.01.0
Bias0.0 – 1.00.5

Lfo Rate — LFO frequency in Hz, 0.01–50. The rate at which the crossfade swings between Source A and Source B. Slow rates (0.01–1 Hz) produce slow, breathing transitions; mid (1–10 Hz) feel like rhythmic alternation between the two sources; fast (20–50 Hz) approach AM/ring-modulation territory where the alternation produces audible sidebands.

Lfo Depth — How much the LFO affects the crossfade, 0–1. 0 = no modulation (output sits at bias). 1 = full modulation (output swings the full A↔B range driven by the LFO). Lower values keep the crossfade close to bias with subtle movement.

Bias — Center point of the LFO’s swing, 0–1. 0 = LFO swings around full A; 1 = around full B; 0.5 = center (equal swing between A and B). Use bias to set “which side is the home position” before the LFO modulates around it.

Additional controls

Shape — LFO waveform: Sine, Triangle, Saw Up, Saw Down, Square, S&H (sample-and-hold, random stepped values), Noise (continuous random). Sine and Triangle for smooth crossfading; Saw waves for one-direction sweeps that snap back; Square for hard alternation between A and B; S&H/Noise for unpredictable, glitchy transitions.

Curve — Crossfade curve at each blend point: Linear, EqPow (equal-power), S-Curve, Log. Equal-power is the safest default for un-correlated material (constant total power through the blend). Linear works fine for correlated content. S-Curve has slow edges and fast middle (transition feels). Log emphasizes early/late portions of the blend (asymmetric character).

About LFO Crossfade

This is a time-domain LFO crossfade — the simplest crossmorph operation in the category. It mixes audio samples from A and B according to an LFO-driven blend value. Operates on the audio data directly without spectral processing, so it’s CPU-light and very fast. Use it for: rhythmic A/B alternation, slow ambient morphing, tremolo-style modulation between two sources, or as a pre-processing step before spectral nodes. For frequency-aware crossfading (different frequencies blending at different times), use the Spectral Magnitude Crossfade. For content-aware blending that respects spectral similarity, use Multi-Band Crossfade.

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