Erica Synths
Black Digital Noise - 10HP

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Item: N13-4258

Availability: In stock

Black Digital Noise - 10HP


The Erica Synths ‘Black Digital Noise’ is a unique noise module that makes a wide range of noise effects; almost pure white noise, Atari console-like one bit noise and other crazy, more-less predictable sounds. At the heart of the module is a programmable logic matrix that includes two linear feedback shift registers that generate polynomial noise effects.

The Erica Synths Black Series features high-end modules with unique functionality. Only the highest quality components are used and all inputs and outputs are protected against undesired over-voltage. When designing the Black Series, Erica Synths did not economize on the module width, they put design and usability first. Big knobs are assigned to functions that make differences in sound. The Erica Synths Black Series are a range of modules that together make an entire synthesizer! 


  • Noise/Effects Module
  • Clock Rate sets Desired Noise Character – from very grainy noise fully CCW to white noise fully CW
  • Bit Width Control – Selects Noise Bit Width from 1-Bit, Atari Console-like Noise fully CCW, to 4-Bit Noise fully CW
  • EXT CLK Input – Connect Output from any VCO (High Frequency for best results) – Noise Character will follow VCO Frequency and Internal Clock gets disconnected when EXT CLK is patched
  • POLY 1 and POLY 2 Control – Selects 4 Polynomial Feedback Segments each giving 16 possible variations of noise effects – The Sound will be different each time user enters the segment as polynomials are shifted inside the segment
  • POLY CV Control – Sets desired Polynomial Feedback CV Value (Stereo Knob, attenuates both CV1 and CV2 simultaneously)
  • RESET Input – Any Signal (Pulse, Random Gate, Audio, etc) here resets polynomials and the effect is similar to syncing VCO
  • CV1 and CV2 Input
  • Noise Signal Output

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  • Eurorack Module
  • 10 HP Width
  • 25mm Depth
  • Current Draw: 93mA @ +12V, 25mA @ -12V

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