Laser printer:
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General noise, Office work
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Shutting, fan noise, Turning on the computer
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Opens, closes the CD / DVD tray
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Sound signal of a bios computer, bios
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Read, write, Hard disk, room noise
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Computer interface, alarm
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Computer simulated laser
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Repeatedly pressing a computer mouse
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Shutting, Turning on the laptop, fan noise
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Computer interface, signals
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Signal, interference, Modem connection
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Turn off the old computer, Turn on
★★★★★