[Bigiron]

Speaking fast:
1. Nervousness
2. Excitements
3. Anger
4. Childhood Experiences
5. Fear of Interruption 
6. Speed of Thoughts
7. Mental-Health Conditions
8.speak faster and louder, you are an extrovert personality
( *Note: might have something hidden. Heavy breathing rhythm can be hear sometimes )

Speaking slow:
1. speak slowly and quietly, you are an introvert or ambivert personality.
2. Deep thinker


High-Pitched Voice :
1.trembling voice indicates low self-confidence and nervousness.
2. harbor feelings of insecurity, dependency, and restlessness

Low-Pitched Voice :
1.confident, assertive, extroverted (given the right situation)
2.decisive and confident

Short pause:
1. Hesitant
2. Thinking and matching the right words