aommaster Posted June 16, 2004 Share Posted June 16, 2004 I just want to clarify this. What is casues deafness? Below are the reasons which I have been told, but, which one is it? I am talking about permanent deafness! 1.Exposure to a loud sound (let's say 20 minutes), not on a frequent basis 2.Exposure to a loud sound (let's say 8 hours), not on a frequent basis 3.Exposure to a loud sound (let's say 20 minutes), on a frequent basis 4.Exposure to a loud sound (let's say 8 hours), on a frequent basis The loud sound is not something like a jet fighter taking off a foot away from you Its like loud music at a disco or somthing! Which one is it? {edit} Could this thread be moved to a biology forum or general science forum? i think it suites it better there! Link to comment Share on other sites More sharing options...
Glider Posted June 16, 2004 Share Posted June 16, 2004 All those depend on the loudness of the sound. Loud enough, and they will all cause permanent damage. Loud noise with frequent and protracted exposure will obviously do the most damage. However, an explosion can render a person permanantly deaf too. Link to comment Share on other sites More sharing options...
YT2095 Posted June 16, 2004 Share Posted June 16, 2004 yup, I was thinking point #4 would be the "best" option if you wanted to cause damage with a more or less guarantee, but then roadies do it all the time? so I wonder what is meant by "Deaf"? my sign lang teacher was profoundly deaf from birth, you could drop truck behind her and she wouldn`t hear it, he husband wasn`t born deaf, but had a bad chest infection as a child of 4, and now is also profoundly deaf as a result. there are meany causes really and meny levels of deafness, just as there are with blindness. it`s a very difficult question, if not impossible, to answer really. Link to comment Share on other sites More sharing options...
aommaster Posted June 16, 2004 Author Share Posted June 16, 2004 Well, when I mean deaf, I mean the loss of ability PERMENENTLY to listen to high pitches of sound, not the very high ones, the common ones that everyone can hear. As I also said in my question, the sound would be like a loud disco. So, after that, what do you think? Link to comment Share on other sites More sharing options...
YT2095 Posted June 16, 2004 Share Posted June 16, 2004 the Clllia I think it`s called in the Cochlea can be permanently damaged by sounds 120db (ish) over a short time, But without knowing the exact bd levs (other than "loud music") it would impossible to say even using a chart of averages Link to comment Share on other sites More sharing options...
aommaster Posted June 16, 2004 Author Share Posted June 16, 2004 umm... I would think its about 80-90 decibels! Link to comment Share on other sites More sharing options...
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