![]() Using SMPTE 2110 / AES67 for audio transport opened up the possibility for clocking between sites using GPS Support for SMPTE 2110 / AES67 compliant devices in Dante workflows, and support for GPS Synchronisation. A single Domain can contain member devices from different zones but clocking remained a serious issue. ![]() Being universities both UWL and Edinburgh Napier have access the Joint Academic NETwork, a dedicated network shared by UK universities.ĭante Domain Manager - Dante Domain Manager allows for logical groupings of Dante devices into Dante Domains, within which are user-defined zones. JANET - A wide bandwidth internet connection. There are four elements which enabled this project: If it's not, the main symptom for the audio user at either end is generally silence!" How Did They Do It? We don't know the hardware hops or the traffic levels, so we'll always run the risk of not having that all-important, low jitter, consistent clock. However, where the network between two devices spans hundreds of miles and isn't ours, that network is beyond our jurisdiction. Certainly with Dante Domain Manager, we can now send a Dante stream containing clock packets from anywhere to anywhere. ![]() With Dante, that fundamental principle is no different. “in a standard digital audio scenario, we wouldn't dream of sending audio between two devices without rock-solid and consistent clock. In the same way, as we wouldn’t digitally connect audio equipment without a suitable word clock, network audio relies on a network clock to enable solid timing and eliminate jitter. Talking specifically about Dante, the reason a Dante network doesn’t work effectively across the internet is that there is no way to provide an accurate clock signal to all sites on such a system. Using some recent additions to the Dante Domain Manager software a possible way to provide stable, reliable clock to UWL and Edinburgh simultaneously was envisaged. The crucial inspiration came from Professor Justin Paterson and Dr Paul Ferguson. Clever and effective but not quite the same thing.Ī recent showcase event at the University of West London and Edinburgh Napier University entitled Video Killed the Radio Star: How the Future Began illustrated how high quality simultaneous live performance by musicians at opposite ends of the UK is possible but it took some extremely clever exploitation of currently available software and hardware products to achieve it. Isn’t that a solution? Unfortunately not as although using Source-Connect is it possible to record remotely, the workflow is recording to DAW playback rather than live input at both ends and also Source-Connect uses compressed audio for the live monitoring and “backfills” the placeholder, compressed audio with uncompressed audio post record. Something which struck me straight away was that Source-Connect offers high-quality audio at a distance. Ultimately the choice has been between studio-quality audio or operating over a long distance. The kind of simultaneous live performance being discussed here has always been impractical across the internet as the route any particular packet of data will take passes beyond the control of the user. The development and proliferation of Dante, RAVENNA and AVB/TSN have shown how useable computer networks are for the distribution of low latency, multichannel, uncompressed audio but this has always been across a LAN or local area network. However, one area which remains beyond our current capabilities is real-time, online performance, with musicians playing together from remote locations across the internet. In Podcast 411, we discussed the things we now take for granted in terms of online collaboration and file sharing. The restrictions on movement which are such a necessary part of the social distancing required to fight the spread of COVID-19 has brought the advances made in online collaborative working in recent years into sharp focus.
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