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In the above example, an audio signal goes out of the microphone and into the stage box. Like an analog audio system, audio networks consist of sources, destinations, and intermediate processing along the way. The AVB specification defines such a clock to be accurately distributed to all devices in the system.ĪVB networks behave very much like an analog audio system. In a digital audio system with multiple devices, having a master clock is critical to maintaining audio fidelity. This means standard network traffic, such as Internet streaming, won’t prevent your audio from being delivered reliably and on time. AVB networks intelligently manage the data traffic giving priority to AVB data. This offers the future possibility of expanding your system with additional devices that contain different kinds of audio I/O, multiple controllers, and other useful functions. AVB’s bandwidth is sufficient to carry hundreds of real-time channels using a single Ethernet cable. Please note that while PreSonus AVB products operate at faster Gigabit network speeds, they are currently fixed to 2 ms of latency. With higher speed networks, many AVB devices support lower latencies and additional hops. AVB provides latency of no longer than 2 ms sending an audio stream point-to-point over up to seven “hops” (trips through switches or other devices) on a 100 Mbps network. This makes it easy to have audio I/O located in different rooms (or even different venues in the same building) and run multichannel audio between them in real time. A single lightweight CAT5e or CAT6 cable can be run up to 100 meters (328 feet).
STANDARD NETWORK KIT PRO
AVB is intended to change that by providing an open source collection of IEEE standards available for use by the pro audio market and its manufacturing community.ĪVB networking offers several features that make it ideal for audio applications: The problem is that most solutions are proprietary, making these systems too expensive and too complex for most smaller applications.
Numerous audio companies have adopted it, and more companies are adding it all the time.Īudio-over-Ethernet has become increasingly attractive in Pro Audio applications especially for distribution in large-scale systems, such as those used in sporting venues, concert halls, and education institutions. This enables you to mix normal network data and audio network data on the same network, making it easier to create both simple and complex networks.
AVB allows you to create a single network for audio, video, and other data like control information, using an AVB-compatible switch. What is AVB?ĪVB (Audio Video Bridging) is an extension to the Ethernet standard designed to provide guaranteed quality of service, which simply means that audio samples will reach their destinations on time.
STANDARD NETWORK KIT SERIES
These products are not compatible with IEEE 1722.1 devices like the StudioLive Series III mixers or other third-party AVB products that follow the 1722.1 AVDECC standard. Note: Earlier generations of PreSonus AVB products ( StudioLive RM-AI and RML-AI mixers, StudioLive CS18AI, and AI-series consoles equipped with the SL-AVB-MIX option card) are not 1722.1 AVDECC-compliant and can only be used with each other. PreSonus StudioLive ® Series III console and rack mixers, NSB-series Stageboxes, and EarMix™ 16M Personal Monitor Mixers are fully compliant with the IEEE 1722.1 standard, which is the protocol for discovery, enumeration, connection management, and control of AVB devices, also known as AVDECC. This article explains the basics of AVB networking, and much of the information here is relevant for other IEEE 1722.1-compliant AVB devices, in addition to supported PreSonus AVB products. While there are several protocols currently in use for audio networking, AVB has many unique benefits that have made it the protocol of choice for the latest generation of PreSonus ® pro audio equipment. As networking speed and reliability have increased, and the underlying technology has become more affordable, transporting audio over an Ethernet cable now offers dramatic savings of time and money, making it more attractive than ever. Remote control over wireless LAN networks, proprietary audio-over-Ethernet protocols, and extensible audio networking platforms have all become relatively commonplace. Most people who have used a digital mixer in the last ten years are familiar with incorporating networking technology into their audio application.
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