Mechanical lift:
-
Small centrifuge
-
Power Plant Water Pumps
-
Automatic telephone switch
-
Low frequency running engine
-
Electric welding
-
Rattling, The atmosphere of the factory
-
Postal sorting line
-
Compressor, shutdown, start, run
-
Room noise, Glass bottles on a conveyor line
-
Bottling plant
-
Electric generator (hum)
-
Letter press
★★★★★