Laser printer:
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Turn on, turn off the old computer
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Typewriter, environmental sounds, Office work
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Write, Hard disk, room noise, read
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Computer noise, Communication room
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Computer mouse movement
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Computer simulated laser
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Old computer keyboard
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Photocopy (photocopy)
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Jet printer
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Computer keyboard
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Double click computer mouse
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Turning on the laptop, shutting, fan noise
★★★★★