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AES67 and AVB are both a collection of standards, which are not actual implementations. The bandwidth demands of video, particularly the move to 4K is driving upgrades to infrastructure and the limitation of incompatibility with legacy hardware isn't such an issue in these markets. Its applications are far wider than just pro audio and video though. Important markets include automotive and industrial control uses and the development of TSN (Time Sensitive Networks) by the AVNU alliance reflect this interest in critical control systems in non AV applications. Trusted content from independent music and post production experts. AES67 is a standard to enable high-performance audio-over-IP streaming interoperability between the various IP based audio networking products currently available, based on existing standards such as Dante, Livewire, Q-LAN and Ravenna. For example, a signal can be received via AES67 and then sent out via SMPTE 2022, AVB, Ravenna, Dante or AES67,” according to Dave Letson, Calrec’s vice president of sales.“Like AIMS, MNA members were committed to adopting a standards-based approach to interoperability. Das bedeutet, dass ein AES67 kompatibler Ravenna-Stream von einem AES67-kompatiblen Dante-Gerät empfangen und die Audiosignale ausgetauscht werden können, wenn sie voneinander wüssten, dass sie in einem Netz sind und es kompatible Audiosignale zum Austauschen gibt. Many of the standards we recognise today are actually licensed technologies. Visit our corporate site at www.futureplc.com.By Steve Harvey. The biggest limitation on its uptake in pro audio is probably the relative indifference end users have to which technology they use combined with the fact that Ethernet switches used on an AVB network have to have specific AVB features, ruling out old or non-AVB switches. Dante already implements an IP Layer 3 transport, but AES67 will provide an alternative open standard within Dante for transport using the Real-time Transport Protocol (RTP) developed by the Internet Engineering Task Force (IETF).To achieve interoperability, AES67 mandates a specific RTP payload format for delivering audio over IP networks, as well as methods for exchanging information about audio streams. When sending audio between mixed AES67 compatible networks an AES67 stream can be used, sacrificing a little latency for improved flexibility. Dante publishes the availability of AES67 streams on the network so they can be used by 3rd party network technologies with AES67 providing the transport and Dante looking after the system control.The thing which excites me, and clearly a lot of the audio industry, about AES67 is that it is pragmatic. One AES67-enabled Dante device will act as the boundary clock between PTP v1 and v2, bridging the two clock domains (i.e.
The reason why you might want to do this is because AES67 is a lowest common denominator between networks and using Dante's native transport protocol might provide performance improvements when moving data around a purely Dante network. Lastly, it can be used to check potential interoperation with other AES67-compatible implementations.