THX is a quality assurance system for audio and visual experiences, originally developed by George Lucas in 1983. It ensures that sound and picture quality in theaters, home entertainment systems, and other media meet high standards. The THX logo is often seen in movie theaters and on DVDs, indicating that the content has been optimized for the best possible experience. The THX certification process involves rigorous testing of equipment and environments to ensure they deliver clear sound and sharp images. This system has expanded beyond film to include video games and consumer electronics, helping to create immersive experiences for audiences worldwide.