If we are talking about the common characteristics of a successful speech it is important to pay special attention to voice timbre. The more significant the person, the lower his voice and speech from it acquires special weight and influence. A person possessing a low voice at the level of intuition is perceived as more authoritative and confident in his words. His voice is a real instrument of influence. It is believed that speech and music in this range stimulates memory, tissue healing, immunity, overcomes the syndrome of low attention, improves understanding in the active hearing.