Regarding your question: I do not remember if Rayarama ever chanted very loudly in my room, neither he ever lived in my room, nor I had ever asked him not to chant loudly. I do not know how these news are spread. There is no such requirement that Japa should be silently and chanting should be be done differently. Loudly or silently, everything is all right. There is no such restriction. Only thing is that we should chant very attentively, hearing the vibration very distinctly.