system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] is there anything superman can’t hear through?

We know he can’t see through lead, but can he hear through anything? I mean (as far as I know) the batcave is lined with lead (I remember them saying it somewhere, it might have been injustice) but what’s stopping him from just hearing inside of the batcave? Is there some material that he can’t hear through?
gpt
I think the main problem for his hearing is that there's so much going on that it's often hard for him to pinpoint any specific thing unless it stands out dramatically from the rest of Earth's background noise.