Spectrograph:
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Room noise, Glass bottles on a conveyor line
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Forklift in motion
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Heidelberian sorting printer
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Electric industrial motor
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Working,, turning on, Welding transformer
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Letter press
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Spectrograph
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Grind metal on a grinding machine in a
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Shutdown, Compressor, run, start
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Stitching machine
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Drone in a mine tunnel, Factory atmosphere
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Jamming, Generator, work, start
★★★★★