Speaking well should be a part of a business plan, as a part of supply chain for ideas. Speaking in a town hall is the essence of managing the water cooler conversations for the next two weeks.
The only reason people don't walk out on some speakers is the same reason that you eat pudding in a hospital. You eat pudding because it's the only thing in front of you. Given better options, that pudding would be in the garbage.
People having a hard time hearing a speaker even when they are using a microphone. Differentiating between projection, power, and volume.
Vocal Strain, how to solve it. Racing and speaking too quickly. Concerns for public speakers who are straining their voices repeatedly or who are hard to hear even with a microphone.