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AES67-2023: AES standard for audio applications of networks - High-performance streaming audio-over-IP interoperability

Printing Date: 2023-12-18

Publication History: Pub. 2013; Addendum 2014-03-24; Revised 2015; Revised 2018; Revised 2023

Abstract: High-performance media networks support professional quality audio (16 bit, 44,1 kHz and higher) with low latencies (less than 10 milliseconds) compatible with live sound reinforcement. The level of network performance required to meet these requirements is available on local-area networks and is achievable on enterprise-scale networks. A number of networked audio systems have been developed to support high-performance media networking but until now there were no recommendations for operating these systems in an interoperable manner. This standard provides comprehensive interoperability recommendations in the areas of synchronization, media clock identification, network transport, encoding and streaming, session description and connection management. This revision contains clarifications and minor corrections and adds a Protocol Implementation Conformance Statement (PICS) as Annex G. A new sender keep-alive recommendation, has been added to clause 6.3. Minor clarifications and corrections include a specification of MTU requirements in the presence of allowed (but not recommended) additional information in the RTP header and correcting SDP examples in clause 8.5 to match an erratum issued by the IETF on RFC 7273. Corrected domainNumber range to conform to IEEE 1588-2008 requirements.

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