By chanting loudly you also help your neighbor, who will hear you. And when he comes to complain, "Why you are disturbing ?" then your mission is successful. That means he has heard. (Laughter) So you hear and let your neighbors also hear. Both benefit. That is the greatest benefit you can render to your neighbor.

(Srila Prabhupada — June 22, 1974, Bad Homburg, Germany)