Office work, typewriter, environmental sounds:
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Repeatedly pressing a computer mouse
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Matrix printer
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Computer simulated laser
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Hard disk, write, room noise, read
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General noise, Office work
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Laser printer
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Sound signal of a bios computer, bios
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Input error sound, Pressing a keypad
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Photocopy (photocopy)
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Alarm, Computer interface
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CD / DVD drive, disc read
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Manual copy machine
★★★★★