There are three Ps of your voice that give meaning to your words:
- Pitch - how loud or soft you are/how your voice goes up or down
 - Pacing - how fast or slow you are
 - Pause - how often you stop talking
 
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com
Twitter: @PblcSpkngLibr