Opening, closing the laptop cover:
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Opening, closing the laptop cover
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Interference, Modem connection, signal
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Communication room, computer noise
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Computer interface, signal read information
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Office work, general noise
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Computer simulated laser
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Old computer keyboard
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Computer keyboard
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Turning on the computer, fan noise, shutting
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Disc read, CD / DVD drive
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Environmental sounds, Office work, typewriter
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Turn on, turn off the old computer
★★★★★