Matrix printer:
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Opening, closing the laptop cover
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Double click computer mouse
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Office work, general noise
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Turn on, turn off the old computer
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Read, room noise, Hard disk, write
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Alarm, Computer interface
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Manual copy machine
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Franking machine
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Matrix printer
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Laser printer
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Typewriter, Office work, environmental sounds
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Opens, closes the CD / DVD tray
★★★★★