The CDC has said loud noise – especially once it hits 120 decibels – can cause immediate harm to one's ears.

疾控中心表示，巨大的噪音--特别是当噪音达到120分贝时--会对人的耳朵造成直接伤害。

The expression " to be music to one's ears" means that something is very pleasant to listen to, something that you enjoy listening to.

“to be music to one's heaven”这个表达的意思是某件事非常好听，某件事你喜欢听。