The main focus in public speaking is to how we can effectively convey our message to an audience. We need to consider plenty of factors. Aside from having good articulation, pitch and tone, we should also keep in mind the volume of our voice. When addressing an audience, voice volume doesn't have to mean you have to shout to be clearly heard. Voice volume should be flexible depending on how large your audience is and this can be practiced. Several tips are available on how to improve one's voice volume without compromising the quality of your voice. The main thing what you should keep in mind in determining your voice volume is making sure that the back row listeners can clearly and comfortably hear your message. You can also practice a variety of voice volumes depending on your topic to add more expression to it.
A secondary source of information is one that was created later by someone who did not experience first-hand or participate in the events or conditions that you're researching.
