Fan blade rotation, air cut:
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SMS notification sound
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Humming fan, Computer turning on, off
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Old tv on, off
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Email message sound
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Cool sound for notification
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Off, Air conditioning, on
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Vibration noise, Faulty air conditioning
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Spaceship freezer, defrost process
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Windows notification sound
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Hissing old tv
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A vacuum cleaner
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Electronic melody for SMS alerts
★★★★★