I wanted to add that there are several factors to be considered. Yes, there is the technological aspect, but there is also the work environment. A person is in a certain work environment and tries to regulate the sound in the room. For example, I am at home right now. I would have liked to be at Parliament, but I was only given the notice to appear yesterday. When you are at home, you try to control your sound environment to some extent, but there are limits. Someone may come in. Just now, there were grounds keepers blowing leaves with a blower. So apart from the technology, we have to take factors associated with the work environment into account.
The technology will be improving, but there are also factors that we can control better when we are in a silent location, arranged for the purpose, and have a proper internet connection and headset, for example. That can all reduce the risk of being exposed to sound volumes that are higher than necessary.