Trans-Europe Express Audio: testing 1000 mile low-latency uncompressed audio between Edinburgh and Berlin using GPS-derived word clock, first with JackTrip then with Dante.
Associate Professor of Audio Engineering Edinburgh Napier University Edinburgh, United Kingdom
For nearly two decades, networked audio research using JackTrip has shown that multi-channel uncompressed audio was possible over a National Research and Education Network (NREN) and was now becoming viable over some public network connections. There was however, a ‘Dirty Secret’, in the absence of any synchronisation between transmitting and receiving word clocks, periodic audio loss due to data over-run or over-run was a certainty. The authors describe a low-cost GPS-derived syntonous clocking solution for JackTrip and then apply it to off-the-shelf Dante equipment and Dante Domain Manager for the world’s first long-distance Dante audio over standard academic networks.
Authors: Paul Ferguson (Edinburgh Napier University), Chris Chafe (Stanford University) and Simon Gapp (Technische Universität Berlin)
