Audio-visual systems are setups that combine sound and visual elements to enhance communication and entertainment. These systems typically include components like speakers, microphones, projectors, and screens to deliver audio and video content effectively. They are commonly used in settings such as classrooms, conference rooms, and theaters. These systems can vary in complexity, from simple setups for home entertainment to advanced configurations for large events. Modern audio-visual systems often incorporate technology like video conferencing tools and streaming services, allowing for interactive and engaging experiences in both personal and professional environments.