An audience screen is something that people can look at in a big room or building when they are listening to someone talk. It's like a big TV that shows pictures or words to help people understand what the speaker is saying.
When you go to a movie theater and watch a movie, there is a big screen at the front that shows the movie. An audience screen is kind of like that, but instead of a movie, it shows things like slides or text that help people understand what the speaker is talking about.
Sometimes, people use an audience screen to show pictures or videos that make their speech more interesting. For example, if a teacher is giving a presentation about animals, they might show pictures of different kinds of animals on the audience screen.
Overall, an audience screen helps people understand and enjoy what they are listening to by giving them something to look at that supports the speaker's message.