audiovideo

Audiovideo, also written as audiovisual, refers to technologies that capture, transmit, process, store, and reproduce sound and image content. AV systems are used to create integrated media experiences across entertainment, education, business, and communications.

Core elements include an audio chain and a video chain. The audio chain comprises microphones, mixers, processors, amplifiers, speakers, and monitoring devices. The video chain comprises cameras or video sources, displays or projectors, video switchers, scalers, and recording or streaming gear. Synchronization and control are essential, often managed by AV receivers or control systems that coordinate inputs, outputs, and room environment.

Common standards and formats enable interoperability. Digital video uses formats such as HDMI and SDI for transport and compression standards like H.264/AVC and H.265/HEVC. Audio uses stereo and multi-channel formats such as PCM, Dolby Digital, and DTS. Streaming and conferencing employ protocols and codecs suitable for real-time delivery, with ITU, SMPTE, and IEC organizations developing guidelines.

Applications include home theater, cinemas, broadcast production, live events, education, corporate presentations, and videoconferencing. AV systems are increasingly networked, enabling AV over IP, cloud-based control, and remote monitoring.

History and trends: From early analog sound and projection to digital video and high-definition formats, AV technology has evolved toward compact, networked, and scalable solutions. The convergence of audio, video, and data networks has driven integrated systems in residences, enterprises, and media industries, with emphasis on accessibility, energy efficiency, and immersive formats such as surround sound and large-format displays.