Manual copy machine:
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Matrix printer
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General noise, Office work
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CD / DVD drive, disc read
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Computer noise, Communication room
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Computer mouse movement
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Computer simulated laser
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Floppy disk reading
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The USB flash drive is inserted, removed
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Manual copy machine
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Franking machine
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Shutting, Turning on the laptop, fan noise
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Bios, Sound signal of a bios computer
★★★★★