CG Noise VCA Manual

Modular
Noise VCA
Noise Generator with state variable VCF and VCA

1. Introduction

An all-in-one noise 'voice'. A white noise generator followed by a state-variable VCF (switchable
high-, band-, or lowpass characteristic) with adjustable resonance (Q) and a VCA makes this versatile
module ideal for most standard noise applications. The integrated filter provides a wide range of rich
and colourful noise sounds. The VCF has a 2nd input, allowing one to combine external audio with the noise, or to replace the
VCF's noise input completely with an external source.
The VCA mode can be switched between exponential or linear characteristic, with a muting option when the switch is in its middle
position; the 'Offset' knob allows one to shift the VCA's start point by adding a negative or positive voltage to the VCA's CV input.

2. Features

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Noise generator with integrated state-variable VCF and VCA
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3 direct outputs:
White Noise
◦
Sub F (Random CV)
◦
VCF Out (Coloured)
◦
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Switchable VCF characteristic:
Highpass
◦
Bandpass
◦
Lowpass
◦
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Adjustable filter resonance (Q)
–
Switchable 2 VCF signal input:
nd
White noise only
◦
White noise & external signal combined
◦
External signal only
◦
–
VCA with switchable CV mode:
Linear CV
◦
0 (mute)
◦
Exponential CV
◦
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Available in banana or 3,5mm minijack version
Banana jack version
Eurorack module
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Width: 10 HP
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Dimensions: 128,5 mm x 50,5 mm
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Depth: ≈40mm
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Supply voltage: ±12V
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Power consumption: ≈42mA (positive rail)
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Minijack version Drawing
1