Electric generator (hum):
-
Off, standby, on, Forklift
-
Power station generator
-
Canning machine
-
Hammer knocking, Car factory, welding
-
Mechanical lift
-
Automatic telephone switch
-
Room noise, Glass bottles on a conveyor line
-
Work, jamming, start, Generator
-
Run, Compressor, start, shutdown
-
Hydraulic down machine
-
Rattling, The atmosphere of the factory
-
Working,, turning on, Welding transformer
★★★★★