Description

SIGNOS is an incredibly versatile dual-channel utility and waveshaper module for CV and audio processing in just 8HP.

Both X and Y channels feature a classic / unipolar VCA with dedicated normal and inverted outputs, a polarizer / four-quadrant multiplier / bipolar VCA, a -5V to +5V manual offset voltage that gets summed with their respective channel’s bipolar VCA outputs and a useful bipolar LED indicator for this output. The offset voltage can be used on its own if no input signal is present.

X and Y sums of their bipolar VCAs output + offset (X+offset and Y+offset) are then fed to the following logic and waveshaper circuits: 

• AND analog diode logic gate: outputs the minimum of X+offset and Y+offset. 
• OR analog diode logic gate: outputs the maximum of X+offset and Y+offset. 
• MOD waveshaper: represents the mathematical modulo operation as a CV modulator and waveshaper, with X+offset and Y+offset affecting different parts of this circuit. 
• SHIFT waveshaper: originally designed to pitch-shift sawtooth waves up an octave, it can also do interesting wave-mangling to all kinds of signals. 

All of the above are just the module’s building blocks, only the tip of the iceberg of what SIGNOS can do. It naturally lends itself to feedback patching techniques within itself and/or other modules, complex waveshaping, external signal processing and more.

SIGNOS – Build Document | User Manual | ModularGrid

Features

• 4 inputs and 10 outputs over two chanels
• One main input and one modulating input per channel
• Classic / unipolar VCA with normal and inverted outputs per channel
• Polarizer / four-quadrant multiplier / bipolar VCA per channel
• Variable manual offset from -5V to +5V per channel
• Bicolor LED signal indicator per channel
• AND & OR analog diode logic gates
• MOD and SHIFT waveshapers​
• Fully analog design

Specs

• Width: 8 HP
• Depth: 30 mm (rev. 2)
• Power Draw: +12V: 110mA, -12V: 110mA
• Reverse power polarity protection 
• DC-coupled
• All inputs allow DC to audio-rate signals
• Input impedance: 100 kΩ
• Output impedance: 510 Ω
• 2 mm anodized aluminium panel