Office work, typewriter, environmental sounds:
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Matrix printer
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Computer simulated laser
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Manual copy machine
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Closes the CD / DVD tray, Opens
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Typewriter, Office work, environmental sounds
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Turn off the old computer, Turn on
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Read, Hard disk, write, room noise
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Shutting, fan noise, Turning on the computer
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Bios, Sound signal of a bios computer
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Closing the laptop cover, Opening
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Office work, general noise
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CD / DVD drive, disc read
★★★★★