Computer turning on, off, humming fan:
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On, Air conditioning, off
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Email message sound
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Off, humming fan, Computer turning on
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Hissing old tv
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An electric toothbrush
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Vibration noise, Faulty air conditioning
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Clothes dryer
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Windows notification sound
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Whatsapp notification sound
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Sound to start presentation
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Android notification sound
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Cool sound for notification
★★★★★