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Solaire (pronounced [s?.l???], french word for solar), is a quad full wave rectifier and triple 2:1 mixer with normalisation between rectifier stages and mixers.
The full wave rectifier is a really useful circuit, it can be used to convert a ramp/saw wave into a triangle, a triangle wave into a triangle wave twice the frequency of the input, and using it on more complex signals will allow for solarization type of effect as the signal folds on itself, creating kind of metallic shades.
The 2:1 mixer is also useful to combine two signals together, most obvious use would be H and V oscillators/ramps combination to produce 2D shapes or summing a signal with a slower signal like an LFO to modulate the offset. Each mixer features a switch to choose between:
- AVG (average): signal A and signal B are added and the result divided by two ((A+B)/2).
- ADD (addition): signal A and signal B are added (A+B).
- SUB (subtract): signal A and signal B are subtracted (A-B).
- Each rectifiers and mixers can be used individually, but are also normalized to each other as follow:
Mixer outputs are normalled to the following rectifier input. This allows to use the mixers input B (IN B) to add a signal in-between each rectification stage, either for slow modulation or to create more complex shapes and shades.