To some people silence implies mystery. There exists some deep, dark secret underneath a refusal to speak. They view self imposed silence as some kind of psychological wall that needs to be breached in order to set "right" a person or situation. Silence is an aberration to them.
I'm afraid my silence isn't nearly that romantic. I'm not speaking as a kind of experiment. It is not to cover anything up.
I feel noise is more of a cover up than silence anyway. Noise has a way of drowning out uncertainty, reason and truth. There are no walls in silence, no fortifications in peace. Bull horns are used in altercations and the construction of walls is always noisy work.