I’m 16 and I just noticed it what is it and what’s causing it?

Sooo my sister got me a Bose On-Ear Headphones, the 9.00 kind. They get good review but I’m going to college next month and I think i may need some noise-cancellation. Does the on-ear block out at least some noise? Considering ill probably be doing a lot of work in the college library (not always known for being the quietest place) should i just opt for the actual noise-cancellation headphones or will this be sufficient? THANKS!!!

An older woman i know has Tinnitus (the ringing in your ears that never goes away) and she said that when she was a little girl about 6 or 7 she got it, she talks about how she went to summer camp that was very traumatizing for her and then went home to meet this new boyfriend of her mothers (her father died when she was a baby) talks about how she was mistreated badly emotionally by this new man (soon to be her stepfather) and her mother, and then just stops talking and goes to like ..the next day, ex. she just says "then the next day after i came back from summer camp i woke up with tinnitus.. strange that it’s right after meeting him.." he was an absolutly terrible man and her mother wouldnt treat her well when she was young either. or even when she grew up. so i’m wondering what happened in that period of time that she isn’t really telling. whenever shes telling us stories she says "summer health camp when i was a kid was terrible, when my mom picked me up from summer camp she brought this new boyfriend that was just awful, we all went home. (and then just seems like she skips a section and says) The next day i woke up with ringing in my ears." and talks abotu how that was very traumatizing, the thing is it doesnt sound very traumatizing, its like shes skipping a part or something then just goes to the next day that she has ringing in her ears. i think that something happened in that amount of time that was traumatizing because you cant just wake up with tinnitus. it’s caused by loud noises to the ear, and maybe there was a fight or something that night maybe physical abuse that she’s not telling or something. i know its possible to get Tinnitus other ways, but it’s rare in children and she never had any symptoms, and her story just seems…sketchy. something just doesn’t seem right like shes hiding something. what do you think could have happened? know what i mean? she gets all weird when talking about this also, like nervous and doesn’t seem comfortable talking about it. i know for a fact she has many secrets. what do you think? p.s. this womans been in 20-30 years of psychotherapy, seen an analysis, been in counceling, pretty much everything. shes the most amazing person ever.
thanks so much!

If You Listen To Music Everyday,(on a little over half of the volume limit) How Long Can You Go For Without Having Hearing Problems?
Im Sorry, Its in the wrong category. My bad!
Dudes, It couldn’t possibly be 1sec or 90seconds because i have 3min songs on there xD and im not deaf!