Photocopy (photocopy):
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Manual copy machine
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Computer interface, signal read information
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General noise, Office work
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Laser printer
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Removed, The USB flash drive is inserted
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Photocopy (photocopy)
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Jet printer
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Communication room, computer noise
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Fan noise, Turning on the laptop, shutting
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Computer mouse movement
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Floppy disk reading
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Typewriter, environmental sounds, Office work
★★★★★