@askvinh: If you want to dial in your communication skills, these are the 5 levels you need to adjust when you speak! 1. Rate of speech 2. Volume 3. Melody 4. Tonality 5. Pause These are what I call the 5 vocal foundations to great communication, and the key is to learn how to vary these throughout your speech. These are the basics that you need to master if you want to be a brilliant communicator.