Modem connection, signal, interference:
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Laser printer
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Communication room, computer noise
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Computer mouse movement
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Photocopy (photocopy)
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Double click computer mouse
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Fan noise, shutting, Turning on the computer
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Floppy disk reading
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Alarm, Computer interface
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Write, room noise, Hard disk, read
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Computer interface, signal read information
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Bios, Sound signal of a bios computer
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Manual copy machine
★★★★★