Modem connection, signal, interference:
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Opens, closes the CD / DVD tray, disc read
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Turn on, turn off the old computer
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Computer keyboard
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Computer interface, alarm
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Computer mouse movement
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Office work, general noise
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Manual copy machine
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Computer simulated laser
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Turning on the laptop, fan noise, shutting
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Matrix printer
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Removed, The USB flash drive is inserted
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Environmental sounds, Office work, typewriter
★★★★★