Hard disk, read, write, room noise:
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Communication room, computer noise
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Alarm, Computer interface
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Bios, Sound signal of a bios computer
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Double click computer mouse
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Fan noise, Turning on the laptop, shutting
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Laser printer
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Room noise, write, Hard disk, read
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Photocopy (photocopy)
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Closing the laptop cover, Opening
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Computer keyboard
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Signal, interference, Modem connection
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General noise, Office work
★★★★★