Tokyo will disabuse you of this notion fairly rapidly. If you want pin-drop silence you have to either get out to nature or pay for private space. The substitute for silence that much of Japan uses is a social bubble. There's a polite fiction that things outside one's own bubble don't exist, and polite society is extraordinarily reluctant to impose itself upon others' bubbles. It's basically both required for sanity in daily life and an answer to the question of how many people in Tokyo are confronted with overpowering loneliness when it is one of the most densely populated places on earth.