A vacuum cleaner:
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Off, Computer turning on, humming fan
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Electric wheelchair
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Clothes dryer
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Sewing machine
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Vibration noise, Faulty air conditioning
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SMS notification sound
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Cool sound for notification
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Spin, read, Hard disk
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Electronic melody for SMS alerts
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An electric toothbrush
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Sound to start presentation
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Air conditioning (outdoor unit)
★★★★★