Also, they all change how they speak when they are talking to different kinds of people. To answer, scientists studied both pitch and volume. Third, they listened to leaders speaking on talk shows. A high pitch sounds like a flute or whistle. They have very different ideas. Leaders need to be good speakers. When speaking to large crowds, they used both low and high voice pitches. That is certainly true for politicians and leaders. Scientists have been studying how they speak. Lower pitches show power and strength. Lower pitches show power and strength. Also, they all change how they speak when they are talking to different kinds of people. A low pitch sounds like a drum. They also used both loud and quiet voices. They have very different ideas.