Cool sound for notification:
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SMS notification sound
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Faulty air conditioning, vibration noise
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Portable fan
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Electronic melody for SMS alerts
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Hissing old tv
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Electric razor
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Popcorn machine
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Cool sound for notification
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Fan blade rotation, air cut
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Spaceship freezer, defrost process
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An electric toothbrush
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Computer turning on, off, humming fan
★★★★★