If one is sitting at a chasunah with very loud music playing and he can’t hear his friend speaking unless he shouts, and then he remembers that he hasn’t yet recited krias shema, and he wants to recite krias shema before chatzos, is it lechatchilah [ideal] for one to recite krias shema in a place when one can’t hear what he is saying, or is it problem?
The Shulchan Aruch (Orach Chaim 62:3) rules: When reciting krias shema and its berachos, one must be able to hear with his ears what comes out of his mouth. Some say this is a din de’O’raisa as we darshen, 'שמע' השמע לאזניך – “’hear’, one must hear with his ears”. (The Biur Halachah brings that some learn that even bedieved one isn’t yoitza, however, we don’t rule like this).
There is a similar halachah regarding birchas hamazon (185:2), regular berachos (206:3), and by shemonah esrei (101:2), that one must be able to hear with his ears what he says with his mouth. It’s very common by a chasunah that one is davening shemonah esrei in a quiet corner, and then loud music starts and one can’t hear himself, what’s the halachah in such a case?
On the one hand, when one recites krias shema or shemonah esrei he is unable to hear with his ears the words that leave his mouth, on the other hand, the reading of shema or shemonah esrei is loud enough to be heard, it’s just that in our case there is a side issue that there is a loud noise and one can’t hear, therefore, perhaps it’s ok?
