Hexinverter VCNO Noise Oscillator

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.

Features

• LFSR (Linear Feedback Shift Register) algorithm implemented using discrete analog parts and logic ICs
• PITCH generator capable of frequencies up to half a megahertz
• With the pitch knob turned fully clockwise this will output pure white noise
• As the pitch is turned down, the noise evolves into crunchy noise
• GATE is a DC-coupled output
• SCREECH, SIZZLE AND TEAR have their own unique sonic characteristics
• All outputs work simultaneously and are simultaneously affected by the pitch knob or CV
• The frequency of VCNO can be modulated via CV
• Bipolar attenuverter for CV 
• A switch on the back lets you select either logarithmic or linear response at the CV input jack