touchdesignershit

 Use something like Simplex 3D (GPU) noise.  Set the period to something quite low, so you get lots of noisiness.  Animate the transform Z with absTime.seconds. Plug it into a FUNCTION node In the Function RGB, select Input ^ Exponent Increase Exponent The lower values should now just be black & the higher values now pinging. Use a Level node to tame the opacity & composite it on top of something

 To turn a SOP into a TOP (eg a 3d object into texture data) - First convert it into CHOPS, using a SOP TO. This will take each point's XYZ and convert it to RGB. Next convert CHOPS to TOP, using a CHOP TO. Specify the data format as RGB to incorporate all the data. This can now be used with the Particle GPU tool.