Hexinverter.net - VCNO

Hexinverter.net - VCNO is the latest noise creation of Hexinverter - and it starts from the bottom of low frequency random signal generation and goes up to interesting audio-rate noise territories. Use it for anything: random modulation, pitch-controlled percussive sounds or just pure bitcrushing.

VCNO is a noise oscillator, capable of producing full spectrum white noise. But that’s where its similarity to other noise generators stops. VCNO can be used like a VCO – you can modulate the pitch over CV and use its multiple outputs simultaneously, each with a distinct sonic character. Its method of generating noise is similar to that used in early computer sound chips, except it has been implemented here using discrete logic, without the use of software or microcontrollers.

Discrete Noise Algorithm

LFSR (Linear Feedback Shift Register) algorithm implemented using discrete analog parts and logic ICs - no software or microcontrollers
PITCH generator capable of frequencies up to half a megahertz. This results in a spectrum of noise which reaches far beyond that of human-hearing
NOISE is the main LFSR output. With the pitch knob turned fully clockwise this will output pure white noise. As you turn the pitch down, the noise evolves into crunchy noise, reminiscent of vintage video game sounds
GATE is a DC-coupled output. This is perfect for supplying random triggers in your system
Three Unique Alternative Outputs

Each of the three alternative outputs are completely different circuits – SCREECH, SIZZLE AND TEAR have their own unique sonic characteristics

SCREECH features a dark, howling overtone to the main NOISE output
SIZZLE features a related control, which takes the output from pure white noise when turned fully clockwise to a vinyl-like crackle when turned anti-clockwise
TEAR sounds like the noise generator is broken and tearing itself apart
All outputs work simultaneously, and are simultaneously affected by the pitch knob or CV
PITCH Input

The frequency of VCNO can be modulated via CV – just patch any CV signal into this jack
A bipolar attenuverter lets you find the right level and polarity for your CV signal
A switch on the back lets you select either logarithmic or linear response at the CV input jack
CLOCK Input

Applying a clock signal here bypasses the internal PITCH frequency generator. You can apply a clock from a trigger sequencer to create a pseudorandom drum trigger pattern synced to the rest of your drums