There is a nice couple who lives below me. Until tonight, I've only met the husband. As I was coming back from work, he caught me and informed me that the noise from my apartment was getting out of control. Since my neighbor's wife is in school, it is important to him that she have a quiet environment to study in.
I live in a world of headsets, and the loudest things I do are run the dishwasher, run the washing machine, and misstep when I get out of bed.
That fact doesn't solve the problem that my neighbors have though, which is that they think I'm being loud. In the spirit of dealing with that, I gave them my phone number and told them to text me when they were hearing loud noises. I tried to be sincere, but like I said, I'm pretty quiet about my place.
I want to be a good neighbor, so I certainly hope they'll contact me if they perceive loudness.