Particul is a noisebox/sound generator with two noisy random-ish sources, each with lowpass and bandpass filters, which can then be run through a frequency shifter and delay.

You can download Particul from the Reaktor User Library:

https://www.native-instruments.com/en/reaktor-community/reaktor-user-library/entry/show/14261/

Cheers!

https://www.fstateaudio.com/