This will communicate your interest and excitement for your topic and help generate audience interest, too. Exaggerate voice inflection. Inflection in conversational speaking is difficult to detect when you are speaking in front of an audience. Exaggerate inflection when you are making points or demonstrating some kind of emotion appropriate to the emotions that you are trying to stir in your audience. Monotone does not necessarily mean speaking in a low, droning voice.
Some speakers speak in a loud monotone, and worse yet some yell in monotone.