At this moment the entire group of people broke into a deep, slow, rhythmic chant of 'B-B! ... B-B! ... B-B!'—over and over again, very slowly, with a long pause between the first 'B' and the second—a heavy murmurous sound, somehow curiously savage, in the background of which one seemed to hear the stamps of naked feet and the throbbing of tom-toms. For perhaps as much as thirty seconds they kept it up. It was a refrain that was often heard in moments of overwhelming emotion. Partly it was a sort of hymn to the wisdom and majesty of Big Brother, but still more it was an act of self-hypnosis, a deliberate drowning of consciousness by means of rhythmic noise.
Voila jespere tavoir aidé :)