Throughout the various Western Traditions of magick there are a large body of rituals and ritual tools that are used to work the systems of magick. One of these tools is the Vibratory Formula. It is a method by which divine names and words are intoned forcefully and with authority in a "vibration." Properly performed, the vibration should be felt throughout the entire body and imagined to be vibrated throughout the universe.
Ah Vibratory Formula, one of the main reasons because people are avoiding rituals like LBRP, those impractical loud "shoutings" with the force can be kinda roadblock unless you have temple or house in some secluded place...thou some authors suggest different approach, like Steve Savedow for ex.