User Manual

4.3.5. Noise generator
A noise generator produces a random series of frequencies and amplitudes. With no
fundamental frequency, there's no specific pitch. Noise Colour changes the character from
red noise (dark) to white noise (bright) and every possible shade between the two.
Noise can provide a breathy or percussive element, or it can be used on its own to emulate
wind or water sounds, etc. It also can modulate VCF 2 [p.31] when the sound needs a bit of
"rasp" or timbral chaos.
4.4. Mixer
Use the knobs to set the relative levels of the VCOs and the noise generator. The buttons
select the filter routing for each source. When both LEDs are dark, neither filter is selected
and the source is muted.
The setting of the Series / Para knob in the Ladder Filter module also affects filter response.
Full details are here [p.30], but it's important to know that when that knob is set to 100% left
(Series), VCF 1 is routed completely through VCF 2. If the VCF 2 Cutoff is too low you won't
hear the output of VCF 1.
Arturia - User Manual PolyBrute - Voice Architecture 25