Superman has super hearing, does that make him susceptible to high frequency sounds? Can he be subdued by soundwave cannons or by simply shouting in his ear? I guess this is not the case as he takes explosions to the face on a daily basis, but I'm still curious. Someone once said that Superman won't be affected by loud noise as his super hearing is actually a form of telepathy (as he is sometimes shown to be able to hear sounds on Earth from outer space which wouldn't otherwise be possible). Have different writers had different takes on this?