Random source - noise generator and sample and hold

A sample & hold-circuit can often be the secret sauce that takes your patch from decent to distinctive whether you use it for self-sequencing, for adding a dash of randomness to your filter movements or accents in VCA . It's super simple JFET-based implementation – and then upgraded it with a couple of extra features like an internal clock generator or a dedicated slew output. An integrated noise generator has pink and blue noise outputs in addition to the standard white noise.

https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-noisesh/