From the Blacet website:
Noise and Uncertainty Generator
- Analog White Noise
- Digital Noise with VC Level and Width (Window Comparator)
- BP or LP Filter
- Noise Mixer
- Sample Hold Clock
- External S/H Clock Input
- Built in Digital S/H & Quantizer
- Separate White, Digital, S/H, and Quantized Outputs
- The Level pot and/or the CV jack sets the comparator signal level. Noise is clipped above this level.
- The Width pot and/or the CV jack sets the signal width or “window” where noise is output.
- In practice, these controls are best experimented with to produce the best noise character for your application. Almost any noise frequency from near white to occasional clicks and pops can be realized.
- Frequency Pot, LP/BP Switch: The internal 12 dB filter’s frequency is controlled by the pot. The switch selects a low pass or band pass response.
- Mix Pot, Filtered Output: The Mix pot allows mixing white and digital noise. This mix is sent into the filter, and the filter output is sent to the Filtered Out.
- S/H Pot, External Clock Input: The S/H rate is normally clocked by the internal clock. An external clock can also be used. Plugging in an external clock will bypass the internal one.
- White Noise Output: white noise
- Digital Noise Output: digital noise
- Stepped Output: Stepped voltages derived from the filtered noise mix
- Quantized Output: Stepped voltages derived from the filtered noise mix, quantized to 1V/oct steps
Download Blacet’s ID BASIC MANUAL.
This module fits neatly into a 1U MOTM style Front Panel Express panel with the board mounted directly by the pot bushings. The CV inputs for internal clock and filter frequency were omitted because of panel space. I made some capacitor substitutions and replaced the polyswitchs on the power inputs with ferrite beads. The panel knobs are ALCO PKG50B1/4.