Varian Turbomolecular pump
In one of the labs at work we have a tubomolecular vacuum pump that whines away at 75k rpm persistently.
I took a sample of this racket and attempted to make an organ pad sort of thing out of it.
The sample is played in reverse on the right channel, both left and right are detuned 4 cents apart and also start at a slightly different point in an attempt to create stereo width. Some filtering, saturation and reveb is added to make the sound a bit thicker and a flanger is added with a control knob should you want a bit more spinny-ness.
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