Comparison of audio network protocols - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Comparison_of_audio_network_protocols Comparison of audio network protocols From Wikipedia, the free encyclopedia

1 z 4 2015-08-11 10:06 Comparison of audio network protocols - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Comparison_of_audio_network_protocols Audio network technology matrix [1] Maximum Transmission Mixed use Control Fault Network available Technology Transport Topology Distance Diameter Latency scheme networking communications tolerance capacity sampling rate AES47[1] Cat5=100 m, Coexists Any IP or ATM Provided by 125 μs per (http://www.aes.org)[2] ATM Isochronous Mesh MM=2 km, Unlimited Unlimited 192 kHz with ATM protocol ATM hop (http://www.ninetiles.com) SM=70 km Ethernet Isochronous FEC, AES50[3] dedicated 384 kHz physical or 5 Mbit/s Ethernet Point-to-point redundant Cat5=100 m Unlimited 48 channels 63 μs (http://www.aes50.com) Cat5 and DSD layer [a] synchronous link

Coexists 1 1 4, 1, ⁄3, ⁄4 with other Any IP Provided by Medium and 1⁄ ms AES67 Isochronous traffic using IP, SIP Any L2 or IP Unlimited Unlimited 8 96 kHz medium IP dependent DiffServ packet [b] QoS times 48 kHz (32 AudioRail[4] Ethernet Cat5=100 m, 4.5 μs + Cat5 or channels), (http://www.audiorail.com physical Synchronous Proprietary Daisy chain None MM=2 km, Unlimited 32 channels 0.25 μs per fiber 96 kHz /technical.htm) layer SM=70 km hop (16 channels) Coexists with other traffic using AVB (using IEEE 1722 Cat5=100 m, Enhanced IEEE Provided by transport)[5] Isochronous IEEE 1722.1 Spanning tree MM=2 km, 7 hops Unlimited 2 ms 192 kHz Ethernet 802.1p QoS IEEE 802.1 (http://www.avnu.org) SM=70 km and admission control Ethernet Dedicated Cat5e=120 m, 322 μs + Aviom Pro64[6] Daisy chain Redundant 9520 km physical Synchronous Cat5 and Proprietary MM=2 km, 64 channels 1.34 μs per 208 kHz [d] (http://www.aviom.com) (bidirectional) links [c] layer fiber SM=70 km hop

Ethernet coexists Provided by Cat5=100 m, 1 2 CobraNet[7] Ethernet, SNMP, 7 hops, 1 ⁄3, 2 ⁄3 data link Isochronous with Spanning tree IEEE 802.1 MM=2 km, Unlimited 96 kHz (http://www.cobranet.info) MIDI 10 km [f] 1 layer Ethernet [e] SM=70 km and 5 ⁄3 ms Coexists Provided by with other Any L2 or IEEE 802.1 Cat5=100 m, Dante[8] Any IP Dependent 84 μs or Isochronous traffic using IP, Bonjour single IP and MM=2 km, 700 channels [g] 192 kHz (http://www.audinate.com) medium on latency greater [h] DiffServ subnet redundant SM=70 km QoS link

2 z 4 2015-08-11 10:06 Comparison of audio network protocols - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Comparison_of_audio_network_protocols Ethernet Cat5=140 m, 84–125 μs EtherSound ES-100[9] Dedicated Star, daisy Fault data link Isochronous Proprietary MM=2 km, Unlimited 64 [i] + 96 kHz (http://www.ethersound.com) Ethernet chain, ring tolerant ring layer SM=70 km 1.4 μs/node Ethernet Coexists Cat5=140 m, 84–125 μs EtherSound ES-Giga [10] Star, Daisy Fault data-link Isochronous with Proprietary MM=600 m, Unlimited 512 [j] + 96 kHz (http://www.ethersound.com) chain, ring tolerant ring layer Ethernet SM=70 km 0.5 μs/node Dedicated Cat6=100 m, Gigabit 100 Mbit/s+ Redundant 384 kHz HyperMAC Isochronous Cat5, Cat6, Point-to-point MM=500 m, Unlimited 384+ channels 63 μs Ethernet Ethernet link and DSD or fiber SM=10 km Coexists Provided by Cat5=100 m, Livewire[11] Any IP Ethernet, HTTP, Isochronous with Any L2 or IP IEEE 802.1 MM=2 km, Unlimited 32760 channels 0.75 ms 48 kHz (http://www.axiaaudio.com) medium XML Ethernet [k] SM=70 km IEEE 1394 Coexists mLAN[12] IEEE IEEE 1394, Provided by cable (2 63 devices Isochronous with Tree 100 m 354.17 μs 192 kHz [l] (http://www.yamaha.co.jp) 1394 MIDI IEEE 1394b power, 4 (800 Mbit/s) IEEE 1394 signal): 4.5 m 512 Optocore [m][13] Dedicated Dedicated Redundant MM=700 m, Synchronous Proprietary Ring Unlimited channels at 41.6 μs 96 kHz (http://www.optocore.com) fiber Cat5/fiber ring SM=110 km 48 kHz

Coexists IEEE 802.1, IP over with other Cat5=100 m, Q-LAN[14] redundant 7 hops or Gigabit Isochronous traffic using IP, HTTP, XML Any L2 or IP MM=550 m, Unlimited 1 ms 48 kHz (http://www.qsc.com) link, IP 35 km Ethernet DiffServ SM=10 km routing QoS Coexists Provided by with other RAVENNA[15] Any IP IP, RTSP, IP and Medium 384 kHz Isochronous traffic using Any L2 or IP Unlimited Unlimited variable [n] (http://ravenna.alcnetworx.com) medium Bonjour redundant dependent and DSD DiffServ link QoS Ethernet Cat5e=150 m, 10 km Rocknet[16] Dedicated Redundant 160 channels 400 μs at physical Isochronous Proprietary Ring MM=2 km, max, 99 96 kHz (http://www.medianumerics.com) Cat5/fiber ring (48 kHz/24-bit) 48 kHz layer SM=20 km devices IEEE Daisy chain fault Cat5e=50 m, Isochronous Coexists 400 channels 354 μs + 1394 and in ring, tree, tolerant Cat6=75 m, UMAN and with IP-based XFN Unlimited (48 kHz/24 bit) 125 μs per 192 kHz Ethernet or star (with ring, device MM=1 km, asynchronous Ethernet [p] hop [q] AVB [o] hubs) redundancy SM=>2 km

Notes

3 z 4 2015-08-11 10:06 Comparison of audio network protocols - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Comparison_of_audio_network_protocols a. Ethernet transport is combined with a proprietary audio clock transport. AES50 and HyperMAC are point-to-point audio connections, but they bridge a limited bandwidth of r egular Ethernet for the purpose of control communications. An AES50/HyperMAC router contains a crosspoint matrix (or similar) for audio routing, and an Ethernet switch for control routing. The system topology may therefore follow any valid Ethernet topology, but the audio routers need a priori knowledge of the topology. While there are no limits to the number of AES50 routing devices that can be interconnected, each hop adds another link’s worth of latency, and each router device needs to be controlled individually. b. AES67 devices are required to implement the 1 ms packet time. Minimum theoretical latency is two times packet time. Typical implementations achieve latencies of three times the packet time. c. The network diameter figure is the largest conceivable network using fiber and 138 Pro64 merger units; derived from maximum allowed response time between control master and furthest slave device. d. Pro64 supports a wide variation range from the nominal sample rate values (e.g., 158.8 kHz - 208 kHz). e. Network redundancy is provided by 802.1 Ethernet: STP, Link aggregation; redundant network connections (DualLink) and redundant devices (BuddyLink) are supported. 1 f. Indicated diameter is for 5 ⁄3 ms latency mode. CobraNet has more stringent design rules for its lower latency modes. Requirements are documented in terms of maximum delay and delay variation. A downloadable CAD tool can be used to validate a network design for a given operating mode. g. Channel capacity is based on 48 kHz/24-bit sampling and operation on a 1 Gbit/s network. h. The 84 μs latency value is based on 4 audio samples with this configuration. Note that latency is dependent on topology and bandwidth constraints of the underlying hardware, for example, 800 μs on a 100 Mbit/s Dolby Lake Processor. i. EtherSound allows channels to be dropped and added at each node along the daisy-chain or ring. Although the number of channels between any two locations is limited to 64, depending on routing requirements, the total number of channels on the network may be significantly higher. j. EtherSound allows channels to be dropped and added at each node along the daisy-chain or ring. Although the number of channels between any two locations is limited to 512, depending on routing requirements, the total number of channels on the network may be significantly higher. k. Network redundancy is provided by 802.1 Ethernet: STP, Link aggregation. l. Many mLAN devices have a maximum sampling rate of 96 kHz, but this is a constraint of the stream extraction chips used rather than the core mLAN technology. m. These entries refer to the classic fiber-based Optocore system; no information has yet been obtained regarding the Cat5e version. Confirmation is being sought for the figure of 110 km max distance. n. Latency depends on frame size (packet time), network topology and chosen link offset, with. min. frame size = 1 sample. o. Transport is listed for media streaming and control. Ethernet is also for control. p. UMAN also supports up to 25 channels of H.264 video. q. Base latency measurement is provided for up to 16 daisy-chained devices.

References

(PDF). Audio Engineering Society. 2009. Retrieved 2014-11-13. 1. "Best Practices in Network Audio" (http://www.aes.org/technical/documents/AESTD1003V1.pdf)

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