Standards

 

AES67-2015, Audio-over-IP network interoperability, Revision published

AES67-2015 AES standard for audio applications of networks - High-performance streaming audio-over-IP interoperability, has been published, revising AES67-2013.

This standard defines an interoperability mode for transport of high-performance audio over networks based on the Internet Protocol. For the purposes of the standard, high-performance audio refers to audio with full bandwidth and low noise. These requirements imply linear PCM coding with a sampling frequency of 44,1 kHz and higher and resolution of 16 bits and higher. High performance also implies a low-latency capability compatible with live sound applications. The standard considers latency performance of 10 milliseconds or less.  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 of the 2013 standard includes minor changes identified during 'plugfest' testing in October 2014 and includes updated references to RFC 7273, and clarifications in 6.3, 8.1, and 8.5.  

To obtain a copy of this standard, go to http://www.aes.org/publications/standards/ and search using "AES67", or go directly to:

http://www.aes.org/publications/standards/search.cfm?docID=96

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Posted: Monday, September 21, 2015

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AES-R8-2015, Report on synchronisation of digital audio over wide areas, revised

 The AES Standards Report, AES-R8-2015, "AES standards project report - Synchronisation of digital audio over wide areas" has been revised.

The background material has been extended, and greater reference has been made to various technologies that are in use. More guidance to current use has been provided. Additionally, references to telecommunication standards have been provided, as additional reading material for the interested, as they discuss similar long-distance connections. Finally, a new clause has been added to discuss the synchronization side of monitoring, providing some guidance on monitoring that may be needed for good operation.

To obtain a copy of this standard, go to http://www.aes.org/publications/standards/ and search using "AES-R8", or go directly to:

http://www.aes.org/publications/standards/search.cfm?docID=58

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Posted: Monday, September 21, 2015

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AES17-2015, Measurement of digital audio equipment

 AES17-2015, AES standard method for digital audio engineering - Measurement of digital audio equipment, has been published.

This standard provides methods for specifying and verifying the performance of medium-to-high performance digital audio equipment. It comprises an exhaustive list of measurements applicable to digital audio equipment. 

This document substantially revises and updates AES17-1998, AES standard method for digital audio equipment - Measurement of digital audio equipment. It includes measurements using more up-to-date measurement tools, and includes annexes describing advanced measurement methods for production testing, and frequency-domain and window-width filters.

http://www.aes.org/publications/standards/search.cfm?docID=21

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Posted: Thursday, September 17, 2015

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AES-14id-2010, Universal jack connector

 AES-14id-2010 (r2015) AES information document for interconnections - Universal jack for IEC 60603-11 and B gauge 6,35 mm plugs has been reaffirmed in a new printing. 

Users of test equipment and portable audio equipment such as mixers and direct-injection (DI) boxes, may have to handle 'consumer' type equipment that uses the IEC 60603-11 3 contact (tip-ring-sleeve, or TRS) 6,3 mm plug connector and also professional equipment that uses the B-gauge connector. Traditionally, this has required the use of numerous ad-hoc adapters and connecting leads with different plugs at each end. Neither solution is very convenient and may be unreliable. 

Jack connectors that can accommodate both types of plug have existed for some time, but are not well known. Some TRS jacks will accommodate both types of plug but are not specified by the manufacturer for such use. Clause 5 recommends jack dimensions that are specified to have the required "universal" capability. This does not imply that there may not be others. 

http://www.aes.org/publications/standards/search.cfm?docID=81

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Posted: Wednesday, September 16, 2015

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Call for Comment on DRAFT REVISED AES67-xxxx - High-performance streaming audio-over-IP interoperability

 The Call for Comment on DRAFT REVISED AES67-xxxx, "AES standard for audio applications of networks - High-performance streaming audio-over-IP interoperability" was published 2013-07-29. 

 
http://www.aes.org/standards/comments/cfc-draft-rev-aes67-xxxx-150727.cfm
 
This standard defines an interoperability mode for transport of high-performance audio over networks based on the Internet Protocol. For the purposes of the standard, high-performance audio refers to audio with full bandwidth and low noise. These requirements imply linear PCM coding with a sampling frequency of 44,1 kHz and higher and resolution of 16 bits and higher. High performance also implies a low-latency capability compatible with live sound applications. The standard considers latency performance of 10 milliseconds or less.  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 includes minor changes identified during 'plugfest' testing in October 2014 and includes updated references to RFC 7273, and clarifications in 6.3, 8.1, and 8.5.  
 

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Posted: Monday, July 27, 2015

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Call for Comment on REAFFIRMATION of AES-14id-2010, Universal jack for IEC 60603-11 and B gauge 6,35 mm plugs

The Call for Comment on REAFFIRMATION of AES-14id-2010: "AES information document for interconnections - Universal jack for IEC 60603-11 and B gauge 6,35 mm plugs" was published 2015-07-20. 

http://www.aes.org/standards/comments/cfc-reaffirm-aes-14id-2010-150720.cfm

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Posted: Monday, July 20, 2015

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Call for Comment on DRAFT REVISED AES17-xxxx, Measurement of digital audio equipment

The Call for Comment on DRAFT REVISED AES17-xxxx, "AES standard method for digital audio engineering — Measurement of digital audio equipment" was published 2015-07-20. 

This standard provides methods for specifying and verifying the performance of medium-to-high performance digital audio equipment. It comprises an exhaustive list of measurements applicable to digital audio equipment. 

This revision substantially revises the earlier AES17-1998. 

http://www.aes.org/standards/comments/cfc-draft-rev-aes17-xxxx-150720.cfm

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Posted: Monday, July 20, 2015

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AES69-2015, Spatial acoustic data file format

 AES69-2015 AES standard for file exchange - Spatial acoustic data file format, has been published.

This document standardizes a file format to exchange space-related acoustic data in various forms. The format is designed to be scalable to match the available rendering process. The format is designed to be sufficiently flexible to include source materials from different databases. 

Binaural listening is growing fast, because of growing sales in smartphones, tablets and other individual entertainment systems. The lack of a standard for the exchange of head-related transfer functions (HRTF) means each company keeps its binaural capture and rendering algorithms private. 3D audio is arising, and binaural listening could be the very first 3D audio vector with sufficient fidelity of HRTF. 

The use of convolution-based reverberation processors in 3D virtual audio environments has grown with the increase in available computing power. Convolution-based reverberators guarantee for an authentic and natural listening experience, but also depend on the acoustic quality of the applied directional room impulse response (DRIR).

With a standardized file format for HRTF and DRIR data, each company could contribute its best algorithms, providing good personalized capture and/or rendering, allowing the consumer to choose its best combination of technologies for the best quality of experience. 

This document standardizes a file format to exchange space-related acoustic data, such as binaural listening parameters in the form of head related transfer functions. The format will be scalable to match the available rendering process. The format will be designed to include source materials from different databases. 

To obtain a copy of this standard, go to http://www.aes.org/publications/standards/ and search using "AES68", or go directly to:

http://www.aes.org/publications/standards/search.cfm?docID=99

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Posted: Thursday, March 5, 2015

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Call for Comment on DRAFT AES69-xxxx, Spatial acoustic data file format

 The Call for Comment on DRAFT of AES69-xxxx, "AES standard for file exchange - Spatial acoustic data file format" was published 2015-01-12. 

http://www.aes.org/standards/comments/cfc-draft-aes69-xxxx-150112.cfm

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Posted: Monday, January 12, 2015

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Call for Comment on REAFFIRMATION of AES56-2008 - Loudspeaker polar radiation measurements

Call for Comment on REAFFIRMATION of AES56-2008 AES standard on acoustics - Sound source modeling - Loudspeaker polar radiation measurements was published 2014-12-16 in accordance with our 5-year review policy. 

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Posted: Tuesday, December 16, 2014

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