Fan blade rotation, air cut:
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An electric toothbrush
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Vibration noise, Faulty air conditioning
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Off, Old tv on
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Windows notification sound
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Computer turning on, humming fan, off
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Whatsapp notification sound
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Email message sound
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Cool sound for notification
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Sound to start presentation
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IPhone notification sound
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Android notification sound
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Read, Hard disk, spin
★★★★★