Communication room, computer noise:
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Office work, general noise
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Computer interface, alarm
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Turning on the laptop, fan noise, shutting
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Manual copy machine
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Old computer keyboard
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Turn off the hard drive, Turn on
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Floppy disk reading
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CD / DVD drive, disc read
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Closes the CD / DVD tray, Opens, disc read
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Sound signal of a bios computer, bios
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Turn on, turn off the old computer
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Modem connection, interference, signal
★★★★★