Spectrograph:
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Factory work, general noise
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Forklift, standby, on, off
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Power station turbine
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Spinning machine
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Grind metal on a grinding machine in a
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Electric generator (hum)
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Stitching machine
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Forklift in motion
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Forklift drives by
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The atmosphere of the factory, rattling
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Glass bottles on a conveyor line, room noise
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Print imprinted in cardboard, Notches
★★★★★