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The IP-based Real-Time Audio Network

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Presentation on theme: "The IP-based Real-Time Audio Network"— Presentation transcript:

1 The IP-based Real-Time Audio Network
Annual Lawo Partner Training & User Meeting +++ September , 2010: The IP-based Real-Time Audio Network Andreas Hildebrand, Senior Product Manager


3 Who is ALC NetworX ? Company facts:
Independent company (GmbH), based in Munich Founded October 2007 Shareholder: Lawo Group AG, CH CEO: Philipp Lawo Current staff: 5 R&D engineers, 1 Product Manager

4 Another Company ALC NetworX Curious about the Name ? Mission:
Development of new audio distribution technology based on standard Network technology (similar to X-point switcher) Networ X

5 with off-the-shelf, standardized network infrastructure.
Basic Idea: Replacing cost-intensive, proprietary audio & video routing infrastructure (“switchers / matrix / routers”) with off-the-shelf, standardized network infrastructure.


7 Vision:

8 Vision: Bridge other format Node Audio I/O IP net (LAN) Node Node

9 Just another networked audio solution ?
RAVENNA? Real-time Audio & Video Enhanced Next-Generation Network Architecture Just another networked audio solution ?

10 Market Overview - Existing solutions:
SuperMac / HyperMac – based on CAT5 or fiber Proprietary point-to-point connection, no network at all Layer 1 – based on physical layer of Ethernet (copper or optical) always proprietary technology, examples: A-Net, Rocknet, SoundWeb, OptoCore, MediorNet et al. Layer 2 - based on Ethernet data link layer mostly proprietary technology with “black box” licensing model, examples: EtherSound, CobraNet et al. Layer 3 – based on IP utilizes common “internet” technology (addressing & routing schemes, streaming formats etc.) examples: Livewire, Q-LAN, Dante et al. other (non-relevant) technologies: VisiBlu / FlexIP / PYKO and all IP “codec” solutions (APT, Mayah, Qbit, Prodys et al)

11 Existing solutions compared to OSI layer model:
Dante & Livewire OSI Layer A-Net EtherSound CobraNet Application Presentation Session RTP Transport UDP Network IP Data Link Ethernet Ethernet Ethernet Physical Copper Copper / Fiber Copper / Fiber Copper / Fiber

12 Pro & Cons of existing solutions - layer 1: Aviom’s A-Net
ruggedized audio transport system low latency (< 1 ms) Adopts to variable sample rate needs dedicated network, no other traffic supported not switchable / routable not scalable supports only one common sample rate / data format proprietary hardware - no PC interface available

13 Pro & Cons of existing solutions - layer 2: Digigram’s EtherSound
proven audio transport system very low latency significant market penetration, supported by numerous OEMs Ethernet compliant (equipment only) switchable (but not routable) dedicated network required (no other traffic supported) daisy-chain topology (flow limitations, prone to single-point of failure) limited scalability supports only one common data / sample rate proprietary technology (under “black box” license by Digigram)

14 Pro & Cons of existing solutions - layer 3: Axia’s Livewire
fully switchable runs with most standard network switches (but only a few recommended) no topology restrictions other network traffic supported product palette includes choice of mixing desks PCs can take part in a Livewire system significant market penetration (mainly U.S. broadcast market) separate clock distribution / synchronization (but proprietary scheme) supports two latency schemes capacity scales with available bandwidth only one native sample rate & data format supported no support for network redundancy proprietary technology

15 Pro & Cons of existing solutions - layer 3: Audinate’s Dante
accurate clock distribution / synchronization flexible latency assignment (w/ low achievable latency) capacity scales with available bandwidth and latency assignments supports different sample rates & data formats other network traffic supported no topology restrictions fully switchable (& potentially routable) operates on standard network equipment integrated support for full network redundancy PCs can take part in a Dante system proprietary technology (very strict “black box” license) low market penetration, live segment only no experience in / focus on PABM

16 Why IP Networking? Cost efficiency: network infrastructure cheaper to install and operate Scalability: performance scales with capabilities of network infrastructure Flexibility: allows easy and fast configuration changes Availability: IP-capable network equipment and infrastructure readily available and widely deployed Versatility: multiple services can share the same network WAN capability: content can be routed across WAN connections without technology change Convergence: PCs can participate on the network without sound cards Future-proof: IP-based services will grow into all areas of communication

17 Why RAVENNA? Based on well-known technology standards and standardized protocols Designed to work on existing networks Supports shared services on same network Allows WAN connections without technology change No proprietary licensing policy Open partnership model Current RAVENNA partners:

18 RAVENNA – Fields of Application:
Primary focus on broadcasting applications In-house signal distribution in central facilities and regional studios Inter-facility links across corporate networks WAN connections OB vans Other applications Venue / event installation (sports stadium, hallmark events etc.) Install market (theater, opera, P.A. sound systems etc.) Live market (concert hall, open air etc.) Recording Studios & M.I.

19 Basic Components: GPS Ext. Reference IP net (LAN) Node Audio I/O
Sync Master Ext. Reference IP net (LAN) Node Node Audio I/O Audio I/O Node Audio I/O Node Audio I/O

20 RAVENNA Node – Schematic Drawing:
Media Clock Generator NIC Media Clock LAN ADC / Sampler Sample Buffer1 Packetizer Audio In DAC / Serializer Sample Buffer2 De-Packetizer Audio Out 1 size determined by # of samples per packet 2 size determined by play-out delay

21 Redundancy Scheme: Node Audio I/O IP net (LAN) Ext. Reference GPS GPS
Sync Master Ext. Reference GPS GPS Ext. Reference Sync Master 2 IP net (LAN)

22 RAVENNA Key Features: A layer 3 (IP) solution
Can operate on most existing network infrastructures Allows phase-accurate distribution of media clocks Supports concurrent operation of multiple media clocks and formats Full bit transparency with all media formats Allows low latency for real-time critical applications Supports QoS for reliable data transfer Capacity scales with underlying network infrastructure Supports distribution and synchronization across network segments Full network redundancy support

23 Technology Prototypes:

24 Technology Prototypes – Piggyback Board:

25 Peek into our Lab:

26 On Display: The RAVENNA Wall

27 Q & A: Why another IP technology? Why not extending an existing solution? Why not AVB? Is UDP reliable enough? How can the connection quality be secured (we all know about IP disconnects and losses throughout our daily life)? What happens if bandwidth is exceeded by actual traffic situation? How will different latency requirements / settings be handled practically ? How will the connection management work? What is the difference to the IP codec business – why can they use public networks (internet)? Is RAVENNA only covering audio, or will it be suitable for video as well?

28 Q & A: Will RAVENNA be compatible with other solutions?
Who is among the early adopters? Why not manufacturer xy? What will be the first products? When will the technology / products be available for the market? How will „old world“ HD-Core and „new world“ IP converge? Will there be a discontinuity? What‘s the benefit for the customer (THAT you should know by now…)

29 Summary: RAVENNA is a new technology for audio real-time distribution over IP Target market: professional broadcast and other pro audio applications It works on existing network infrastructures in shared traffic environments It offers increased flexibility and contributes to workflow convergence It features low latency, bit transparency and accurate media clock distribution It supports full network redundancy It is an open, license-free technology and based on wide-spread standards ALC NetworX is defining the technology, manufacturers are implementing RAVENNA support Renowned companies from the pro audio market have already joined

30 Thank you for your attention! Contact information: ALC NetworX GmbH Am Loferfeld Munich Andreas Hildebrand Senior Product Manager

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