Office work, general noise:
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Matrix printer
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Photocopy (photocopy)
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Shutting, fan noise, Turning on the computer
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Closes the CD / DVD tray, disc read, Opens
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Laser printer
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Computer noise, Communication room
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Office work, general noise
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Turn off the old monitor, Turn on
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Manual copy machine
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Shutting, fan noise, Turning on the laptop
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Computer mouse movement
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Jet printer
★★★★★