Opens, closes the CD / DVD tray:
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Turn on, turn off the old monitor
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Room noise, write, Hard disk, read
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Office work, typewriter, environmental sounds
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Double click computer mouse
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Read the, Insert the disk into the drive
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Franking machine
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Manual copy machine
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Office work, general noise
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Opening, closing the laptop cover
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Turning on the laptop, shutting, fan noise
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Signal, Modem connection, interference
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Computer mouse click
★★★★★