AES obsolete? Is multi-channel digital audio a proprietary protocol? T hese are questions we often hear that indicate there is much confusion abo ut digital audio\, multi channel audio and it's transport mechanisms. AES and MADI are digital signals\, not a protocol. And\, while there are many products available for multi-channel audio distribution of AES and MADI\, there are many different variants to encapsulate these very same digital s ignals around Ethernet layers (AOIP) for transport and distribution. Many vendors will charge associated fees and fares for specific drivers because they each have their own proprietary protocol for IP audio. This paper wi ll take an in-depth look at the differences between synchronous multi-chan nel distribution hubs (AES\, MADI)\, LAN-based distribution (Ethernet laye r 2)\, and WAN-based distribution (IP layer 3). The emerging IEEE standard s for Ethernet audio as an open source\, which will result in broader dire ct interconnectivity that will hopefully move us toward standard discovery and enumeration\, and drivers that have little or no cost licensing fees and usage\, will be discussed.<\;br>\;Presenter: Al Salci\, Vice-Presi dent\, Sierra Automated Systems
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