What Are Pro AV Systems?
Pro AV systems refer to professional-grade audiovisual equipment and services. These systems are used in various event venues such as concerts, sports events, and exhibitions to provide high-quality real-time video and audio delivery. Pro AV, as a technological domain, involves standardized manufacturing and sales of specialized equipment.
Handling high-definition digital images requires managing significant data volumes. When network speeds are slow, video data is often compressed to facilitate real-time delivery, but high compression ratios can lead to loss of image quality. Conversely, improving network speed entails enhancing equipment performance, which can increase facility costs.
In the pro AV domain, advancements have been made in networking high-resolution video, including the standardization of new communication methods and the development of network-related equipment compliant with these standards. A key technology in this domain is AV over IP, which involves transmitting audio and video signals over IP networks.
Uses of Pro AV Systems
Pro AV systems are utilized in various settings for delivering high-quality audio and video. These systems are commonly used in concerts and events to distribute content to large digital displays and sound systems. Pro AV systems, particularly those using AV over IP technology, simplify the distribution process by using Ethernet networks to transport audio and video content.
Principles of Pro AV Systems
1. Standards
High-definition multimedia interface (HDMI) is a widely used protocol for transmitting high-quality digital video and audio without compression. Ethernet, standardized in 1980, is the foundation for LANs and includes communication protocols, cables, and configurations.
2. Data Communication
Ethernet connects various devices on a single communication path, allowing data exchange using IP addresses. It uses time division multiple access (TDMA) to manage data flow and prevent signal collisions.
3. AV over IP
AV over IP technology converts HDMI signals into IP packets for transmission over Ethernet networks. This simplifies building AV networks in event venues, reducing the need for numerous cables.
4. Standards for Pro AV Networks
With the demand for higher-speed and massive data communication, such as with 4K and 8K content, data compression within acceptable ranges is necessary. Consortia have been formed to establish standards for pro AV networks (SDVoE), and products are being developed based on this standard.
How to Choose Pro AV Systems
When setting up a pro AV environment, consulting professionals or system integrators with expertise in both network and AV technology is crucial. Choosing the right pro AV system involves understanding the specific requirements of the event or venue and selecting equipment that meets these needs while also considering network capabilities.