When RAVENNA was introduced to the industry back in 2010, several – mostly proprietary – AoIP solutions were existing, but no standard was yet visible. Although RAVENNA is an open technology approach, with its modular architecture fully based on existing and well-accepted standards, people seemed to be confused by the wide choice of competing and non-interoperable solutions. The arrival of AES67 in 2013 made people cheer and pay homage to an AoIP standard they believed would finally render any other solutions obsolete… 4 years later, SMPTE published its suite of ST 2110 documents, with ST 2110-30 (linear PCM audio transport) fully referencing AES67 as its basis. A closer look at these standards reveals that RAVENNA – published some 7 years before the arrival of ST 2110 – was build on exactly the same protocols and functions as AES67 and ST 2110. So, does this mean, RAVENNA is now obsolete, being forced to coma by the AES67/ST 2110 nerve pinch? Andreas Hildebrand, RAVENNA Evangelist at ALC NetworX, Germany, explains why this Vulcan nerve pinch does not have any effect for RAVENNA at all…

View
File Type: pdf
Categories: Audio
Presenters : Andreas Hildebrand - ALC NetworX
Year : 2019
dlp_document_download : The IP -based Real -Time Media Network # 1 © ALC NetworX GmbH 2019 AES67 & SMPT ST 2110 ? - The Vulcan Nerve Pinch to ? The IP -based Real -Time Media Network # 2 © ALC NetworX GmbH 2019 What is RAVENNA? The IP -based Real -Time Media Network # 3 © ALC NetworX GmbH 2019 What is RAVENNA? The IP -based Real -Time Media Network # 4 © ALC NetworX GmbH 2019 What is RAVENNA? The IP -based Real -Time Media Network # 5 © ALC NetworX GmbH 2019 What is RAVENNA? R eal -time A udio & V ideo N ext -Generation N etwork A rchitecture E nhanced Skip history The IP -based Real -Time Media Network # 7 © ALC NetworX GmbH 2019 Why RAVENNA?Why Skip why The IP -based Real -Time Media Network # 9 © ALC NetworX GmbH 2019 Networked audio timeline 1996 1997 1999 2001 2002 2003 2006 2007 2008 The IP -based Real -Time Media Network # 10 © ALC NetworX GmbH 2019 Vision: a platform -independent content exchange technology Requirements: • scalable • fast • shareable • flexible • reliable • routable • non -proprietary • based on standards 2008 The IP -based Real -Time Media Network # 11 © ALC NetworX GmbH 2019 Why Networking? • Availability – increase of network -based services (VoIP / NGN, IPTV, WAN distribution via "codecs" etc.) & performance of infrastructure (Ethernet / Gigabit, fiber, switches / routers etc.) • Cost efficiency – equipment, cabling, planning, installation • Flexibility – fast re -configuration / re -routing w/o change in cabling • Scalability –performance scales w/ capabilities of network infrastructure • Versatility – add’l services on same network (e.g. control signal, communication, "office" traffic etc.) • Convergence – direct integration w/ PCs • Resource efficiency – consolidation of maintenance efforts for engineering & service departments The IP -based Real -Time Media Network # 12 © ALC NetworX GmbH 2019 Audio over IP Audio over Ethernet AVB Media streaming ACIP RTP Layer 1 Layer 2 Layer 3 Livewire Dante A -Net MADI AES50 TCP UDP unicast multicast CobraNet EtherSound Confusion Market Evaluation Technology Assessment  IP! The IP -based Real -Time Media Network # 13 © ALC NetworX GmbH 2019 Why IP -based Networking? • General advantages of networking: Reliability, flexibility, versatility, accessibility, scalability, cost advantage, maintenance efficiency, … • Availability: IP -capable network equipment and infrastructure readily available and widely deployed • Based on standards: IP standard protocols (the "internet protocols") are widely supported (e.g. RTP/RTCP, RTSP, IGMP, SDP, DHCP, DNS etc.) • Routing capability: content can be routed across campus networks and WAN connections without technology change • Convergence: PCs can participate on the network without dedicated hardware • Future -proof: IP -based services are growing into all areas of communication The IP -based Real -Time Media Network # 14 © ALC NetworX GmbH 2019 Audio over IP Audio over Ethernet AVB Media streaming ACIP RTP Layer 1 Layer 2 Layer 3 Livewire Dante A -Net MADI AES50 TCP UDP unicast multicast CobraNet EtherSound Confusion Market Evaluation Technology Assessment Take or Make?  IP! The IP -based Real -Time Media Network # 17 © ALC NetworX GmbH 2019 Existing Audio -over -IP solutions / technologies / initiatives: Technology Purveyor Date introduced Technical requirements matched? Open technology? Livewire Telos /Axia 2003   Wheatnet -IP Wheatstone 2005   Dante Audinate 2006 ☺  N/ACIP EBU 2007  ☺ AVB IEEE, AVnu 2005 ☺   ☺ The IP -based Real -Time Media Network # 18 © ALC NetworX GmbH 2019 Audio over IP Audio over Ethernet AVB Media streaming ACIP RTP Layer 1 Layer 2 Layer 3 Livewire Dante A -Net MADI AES50 TCP UDP unicast multicast CobraNet EtherSound Confusion Market Evaluation Technology Assessment Take or Make?  IP! The IP -based Real -Time Media Network # 21 © ALC NetworX GmbH 2019 Networked audio timeline 2008 2009 2010 The IP -based Real -Time Media Network # 22 © ALC NetworX GmbH 2019 An "Open Technology" platform: • Based on technology publicly available  No proprietary "black box" design • Utilizes standard protocols  Proven technology, widely supported • Designed to work on existing networks  No new network equipment required • No proprietary licensing policy  No cost per channel, suits all performance needs • Draft on operating principles published since June 10 th , 2011 The IP -based Real -Time Media Network # 24 © ALC NetworX GmbH 2019 What is RAVENNA ? RAVENNA Draft on Operational Principles 500 g RTP 20 ml PTPv2 1 pinch of Bonjour 1 pkt multicast 1. Stew PTP to order 2. Add RTP 3. Mingle with multicast 4. Add Bonjour on top Serve hot and Enjoy ! Ingredients : Cooking order : The IP -based Real -Time Media Network # 25 © ALC NetworX GmbH 2019 An "Open Technology" platform: • Based on technology publicly available  No proprietary "black box" design • Utilizes standard protocols  Proven technology, widely supported • Designed to work on existing networks  No new network equipment required • No proprietary licensing policy  No cost per channel, suits all performance needs • Draft on operating principles published since June 10 th , 2011  Anybody can implement / support RAVENNA technology • Supported by renowned companies from the ProAudio industry  Broad market acceptance The IP -based Real -Time Media Network # 26 © ALC NetworX GmbH 2019 RAVENNA Partners (& AES67 Supporters): The IP -based Real -Time Media Network # 29 © ALC NetworX GmbH 2019 Networked audio timeline 2008 2009 2010 2011 2013 AES standard for audio applications of networks - High -performance streaming audio -over -IP interoperability AES67 # 30 © ALC NetworX GmbH 2019 IP RAVENNA Livewire Q -LAN WheatNet Dante X X X AES standard for audio applications of networks - High -performance streaming audio -over -IP interoperability AES67 # 31 © ALC NetworX GmbH 2019 IP RAVENNA Livewire Q -LAN WheatNet Dante X X X X AES67 The IP -based Real -Time Media Network # 32 © ALC NetworX GmbH 2019 AES67 The IP -based Real -Time Media Network # 34 © ALC NetworX GmbH 2019 Encoding 48kHz 1-8 Audio channels 48 Samples per packet Media Format L16/L24 PCM QoS three classes AES67 + 44.1, 96, 192, 384kHz… + 64, 128… + 1, 6, 12, 64… + AES/EBU, DSD/DXD, Video + classes adjustable + Redundancy + Discovery AES67 The IP -based Real -Time Media Network # 35 © ALC NetworX GmbH 2019 Encoding 48kHz 1-8 Audio channels 48 Samples per packet Media Format L16/L24 PCM QoS three classes AES67 + 44.1, 96, 192, 384kHz… + 64, 128… + 1, 6, 12, 64… + AES/EBU, DSD/DXD, Video + classes adjustable + Redundancy + Discovery More Features More Options The IP -based Real -Time Media Network # 37 © ALC NetworX GmbH 2019 AES 67 The IP -based Real -Time Media Network # 41 © ALC NetworX GmbH 2019 Networked audio timeline 2013 2014 2015 2016 2017 # 42 Overview on current SDO Activities The Essence -based Approach: SMPTE ST 2110 .. The approach is extensible Published beginning in 2017 # 43 Overview on current SDO Activities ST 2022 -6 ST 2110 Bundled vs. Essence -based Approach The IP -based Real -Time Media Network # 44 © ALC NetworX GmbH 2019 SMPTE 2110 -Professional Media over Managed IP Networks Document structure (audio): • 2110 -10 : System Timing & Definitions − defines transport layer and synchronization (SMPTE2059, clocks, RTP, SDP etc.) • 2110 -30 : PCM Digital Audio − defines payload format for linear audio (AES67, constraints) • 2110 -31 : AES3 Transparent Transport − defines payload format for non -linear audio (RAVENNA AM824) The IP -based Real -Time Media Network # 46 © ALC NetworX GmbH 2019 SMPTE 2110 -Professional Media over Managed IP Networks Document structure (linear PCM audio ): • 2110 -10: System Timing & Definitions − defines transport layer and synchronization (SMPTE2059, clocks, RTP, SDP etc.) • 2110 -30: PCM Digital Audio − defines payload format for linear audio (AES67, constraints) AES67  AIMS WP on AES67 / ST2110 Commonalities & Constraints # 47 Overview on current SDO Activities SMPTE ST 2110 -30 and AES67 Compatibility The IP -based Real -Time Media Network # 48 © ALC NetworX GmbH 2019 SMPTE 2110 -Professional Media over Managed IP Networks 2110 -31 – transparent transport of AES3 audio data • Can transport any format which can be encapsulated in AES3 − L24 PCM w/ AES3 subframe meta data (PCUV bits) − non -PCM audio and data formats as defined by SMPTE ST 337 / 338 (i.e. Dolby®E etc.) The IP -based Real -Time Media Network # 49 © ALC NetworX GmbH 2019 SMPTE 2110 -Professional Media over Managed IP Networks 2110 -31 – transparent transport of AES3 audio data • Builds on RAVENNA’s AM824 (IEC 61883 -6) payload definition: − retains AES67 definitions for synchronization and RTP usage − uses 3 bytes for PCM24 + 1 byte for AES3 meta data − RTP payload format signaled in SDP: a= rtpmap :< pt > AM824/48000/< nchan > -with <nchan > always being an equal number (stereo channels) − retains all other SDP parms 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0|0| B|F| PCUV | DATA24 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The IP -based Real -Time Media Network # 51 © ALC NetworX GmbH 2019  Demo @ RAVENNA booth @ AoIP Pavilion #963 The IP -based Real -Time Media Network # 52 © ALC NetworX GmbH 2019 AES67 / ST2110 audio compatibility ? SMPTE 2110 -Professional Media over Managed IP Networks AES67 ST2110 -30 Constraints ! 24 -bit PCM audio The IP -based Real -Time Media Network # 53 © ALC NetworX GmbH 2019 SMPTE 2110 -Professional Media over Managed IP Networks AES67 / ST2110 audio compatibility ? ST2110 -30 ST2110 -31 AES3 audio The IP -based Real -Time Media Network # 54 © ALC NetworX GmbH 2019 Summary (why RAVENNA?): • Flexibility o Wide range of formats, sampling rates and packet times o Accommodates any channel bundles • Performance o Full bit -transparency o Capacity scales w/ network speed o Ultra -low latency possible ("MADI -over -IP") • Open technology (can be enhanced / expanded) o No licensing, multiple adoptions & OEM provider o Based on existing standards − Operates on standard / managed IT networks (including routing) o Adaptable to emerging standards / technologies through layered approach − Fully compatible with AES67 / ST2110 − SAP / SIP / ST 2059 / ST 2022 -7 / NMOS • Most prevalent technology in broadcast applications The IP -based Real -Time Media Network # 55 © ALC NetworX GmbH 2019 AES67 & SMPT ST 2110 - The Vulcan Nerve Pinch to ? Not at all! The IP -based Real -Time Media Network # 56 © ALC NetworX GmbH 2019 AES67 & SMPT ST 2110 - The Vulcan Nerve Pinch to ? Not at all! The IP -based Real -Time Media Network # 57 © ALC NetworX GmbH 2019 Andreas Hildebrand Technology Evangelist Contact information : ALC NetworX GmbH Am Loferfeld 58 81249 Munich Germany ravenna@alcnetworx.de www.ravenna -network.com
Downloads: 13