Office work, general noise:
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Read, room noise, Hard disk, write
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Modem connection, interference, signal
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Computer mouse movement
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Turn off the old monitor, Turn on
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Signal read information, Computer interface
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Double click computer mouse
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Turning on the laptop, fan noise, shutting
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Opens, closes the CD / DVD tray
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Pressing a keypad, input error sound
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Opens, closes the CD / DVD tray, disc read
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Franking machine
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Repeatedly pressing a computer mouse
★★★★★