Milling machine:
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Welding transformer operation under load
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Mechanical lift
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Car factory
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Laser welding
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Glass bottles on a conveyor line, room noise
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Hydraulic activator
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Electric generator (hum)
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Notches, print imprinted in cardboard
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Machine engine gaining momentum
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Automatic telephone switch
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Standby, on, Forklift, off
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General noise, Factory work
★★★★★