Glass bottles on a conveyor line, room noise:
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Heidelberian sorting printer
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Air compressor turn on, turn off
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Automatic folder
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Industrial exhaust fan
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Noise in, Grind wood with a grinder
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Welding, hammer knocking, Car factory
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Electric industrial motor
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Stitching machine
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Small centrifuge
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Power station turbine
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Factory atmosphere, drone in a mine tunnel
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Letter press
★★★★★