Speak with energy.
Enthusiasm is infectious. A passionate discourse is a foolproof way to enthrall a crowd. Conversely, an audience becomes bored quickly with a flat, dull, colorless speaker. A spirited voice is always more interesting. Speaking with energy insures that the audience will hear every word. If they can’t hear what is being said, how can they be expected to laugh? To make sure that I’m clearly heard, I always turn up the sound system to the point just before feedback, then I lay back from the microphone at least six inches. By doing this I have greater control over the volume, and my delivery.