Office work, general noise:
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Manual copy machine
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Signals, Computer interface
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Matrix printer
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Computer simulated laser
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Sound signal of a bios computer, bios
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Room noise, read, Hard disk, write
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Double click computer mouse
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Old computer keyboard
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Shutting, fan noise, Turning on the laptop
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Repeatedly pressing a computer mouse
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Laser printer
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Disc read, CD / DVD drive
★★★★★