The Studio Is Wherever the Network Reaches

swXtch.io’s groundSwXtch extends the LAN multicast across standard IP networks The post The Studio Is Wherever the Network Reaches appeared first on Radio World.

The author is strategic sales lead for swXtch.io . This article is excerpted from the free ebook “ Audio Production From Anywhere .” Geeter Kyrazis A morning show split across three cities, or a host working off-site, only sounds like great radio if the audio underneath moves cleanly from where it is made to where it airs. Producing from anywhere is, at bottom, a transport problem. Inside the modern plant, that shift already happened. Audio over IP made multicast the facility’s native language: publish a source once, and every device that needs it subscribes with a standard join. Leave the building, though, and most operations fall back to codec pairs: Compress at one end, rebuild at the other. It works, but it changes the audio before air. So why compress at all? Codecs were built for an era when bandwidth between sites was scarce, and that constraint has largely gone. Today’s IP circuits have headroom for full, uncompressed PCM, the same signal your studio runs internally. The penalties go with the codec: latency at every hop, quality lost for good, and a codec at both ends of every link. swXtch.io’s groundSwXtch software extends that LAN multicast across standard IP networks, carrying all major AoIP protocols, including AES67 and ST 2110-30, with no codec in the path. You run a lightweight software node at each site, on hardware you already own; audio sources publish as they do today, and receiving sites subscribe with standard multicast joins, pulling only the feeds they need. What arrives is bit-identical to what left, and it survives a public link: Reliable transport comes with the groundSwXtch network, so loss and jitter never reach air as clicks or dropouts. Timing travels with it. The hardest part of distributed audio, and the one most transport leaves to someone else, is keeping every site on one clock. groundSwXtch carries its own PTP timing across the network, over the same link as the audio, so remote endpoints stay sample-aligned with the source. This matches how broadcasters already think. You built the hub, and every site joins it. It need not even be a building: Public clouds cannot carry native multicast on their own, which is where most audio over IP stops, but groundSwXtch builds that fabric inside the cloud region itself. A source published there is joined just as on your LAN, so the cloud becomes another site. Capacity grows in software, not racks, so the economics stay predictable as you expand, one source feeding syndication, news sharing, contribution and regional splits. For networks distributing nationally, this is more than an upgrade. The C-band satellite capacity that has carried program distribution to affiliates for decades is being reclaimed, and the same audio now has to reach the same stations another way. Software-defined multicast over standard IP is that path: the network you already understand, extended to every affiliate as a join, with costs you can plan for rather than leases you cannot. [Read More Guest Commentaries] The post The Studio Is Wherever the Network Reaches appeared first on Radio World .