We have screen walls (~2 meters) around teams of 2-4 people. I think 2-4 people is a decent compromise, you get friction-less cooperation with the people you work with but you don't get to overhear 20 different conversations about what someone did on their weekend.

I am still bothered by other people's conversations across the screen-walls though, and I prefer to not listen to music all day.

Our CEO is sympathetic to the issue with open offices and maybe if we move to another place it will have a different layout, but converting an open office to separate rooms is not that easy. Does anyone have any suggestions when management would actually accept taking measures to avoid the negatives of open office plans?

Are there 4m high screen walls, with doors..?