Now where are those Iso-Cones 
Not just that, but also hush-boxes. Sounds like it's a good idea to "box them up" not just so we can't hear them, but so they can't hear us (well, hear our tunes that is).
Although, I think that fellas motive is to create a salespitch for his supervisor to make his work area quieter.
"Yes, Sir, if you could lower the noise level about 40dB, the equipment will work harder and faster".

Good video, thanks Chris
Bob