Audio-Visual refers to the combination of sound and visual elements to convey information or entertainment. This can include various formats such as films, television shows, presentations, and online videos. The integration of audio and visual components enhances the audience's experience, making it more engaging and effective in communication. In education, audio-visual materials like slideshows, documentaries, and interactive videos are used to support learning. These resources help to illustrate concepts, making them easier to understand. Additionally, audio-visual technology plays a crucial role in events, such as conferences and concerts, by providing clear sound and visuals to the audience.