Pressing a keypad, input error sound:
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Signal, Modem connection, interference
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Read the, Insert the disk into the drive
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Office work, general noise
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Computer mouse click
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Franking machine
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Turn off the old monitor, Turn on
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Old computer keyboard
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CD / DVD drive, disc read
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Computer mouse movement
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Alarm, Computer interface
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Computer simulated laser
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Computer interface, signal read information
★★★★★