Hello how may I help you? are you familiar with world records? Yes, I'm familiar with that? can you tell me what the loudest recorded sound was? The world's loudest sound made by Krakatoa volcanic eruption in 1883. wow, how loud was it? It was so loud it ruptured eardrums of people 40 miles away, travelled around the world four times, and was clearly heard 3000 miles away. did those people loose their permanently? Yes. thank you that enlightening info! Your welcome. have a great day!