Office work, general noise:
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Signals, Computer interface
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Closes the CD / DVD tray, Opens, disc read
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Signal, interference, Modem connection
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Manual copy machine
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Computer mouse movement
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CD / DVD drive, disc read
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Franking machine
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Matrix printer
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Input error sound, Pressing a keypad
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Sound signal of a bios computer, bios
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Computer simulated laser
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Shutting, Turning on the laptop, fan noise
★★★★★