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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Shutting, Turning on the computer, fan noise
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Environmental sounds, Office work, typewriter
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Franking machine
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Alarm, Computer interface
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Jet printer
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Old computer keyboard
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Turn on, turn off the hard drive
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Computer keyboard
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Communication room, computer noise
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Repeatedly pressing a computer mouse
★★★★★