Additional reports of the Fall AES Standards Working Group meetings are now online.
SC-02-12 on Audio Applications of Networks
SC-03-06 on Digital Library and Archive Systems
SC-03-12 on Forensic Audio
Additional reports will be posted as they become available.
Posted: Wednesday, March 15, 2023
The AES75 standard, published in 2022, details a procedure for measuring maximum linear sound levels of a loudspeaker system or driver using a test signal called M-Noise. To measure maximum linear sound levels meaningfully and repeatably, a signal is required whose RMS and peak levels as functions of frequency have been shown to be representative of program material. M-Noise uniquely also features a relatively constant peak level as a function of frequency, so that the crest factor (peak level – RMS level) increases with frequency, which an analysis on a large variety of music and other content has revealed is an important additional characteristic of typical program material.
The AES SC-04-03-A task group is currently in the process of publicizing the standard and establishing a number of assets. One of these will be a webpage—dedicated to AES75—under the AES website. This page will also serve as a directory of individuals and organizations utilizing AES75.
In support of these efforts, the SC-04-03-A task group would like to know if any individuals or organizations are:
§ Using AES75 to specify maximum linear sound levels of products, or;
§ Supporting AES75-compliant measurements in measurement products or solutions, or;
§ Offering AES75-compliant measurement services.
If you or your organization is doing so, please contact the Standards Manager at the link below.
Posted: Friday, February 3, 2023
Some reports of the Fall AES Standards Working Group meetings are now online.
SC-02-01 on Digital audio measurements
SC-02-02 on Digital audio interfaces
SC-02-08 on Audio file-transfer and exchange
SC-04-03 on Loudspeaker modeling and measurement
SC-04-08 on Measurement and EQ of sound systems in rooms
SC-04-09 on Assessment of acoustic annoyance
SC-05-02 on Audio connectors
Additional reports will be posted as they become available.
Posted: Tuesday, November 1, 2022
BD players are designed to be used in conjunction with a video screen, and so screen-based visual feedback is assumed for operational control. Many audio users will still prefer the simplicity of CD operations and, in many consumer hi-fi systems, there will be no existing screen and the extra cost of providing a screen just to see the menu could make the high-resolution audio proposition impractical
It is possible, without making any changes to the BD player, to provide the necessary functionality for screen-less playback of high-resolution audio. The necessary functionality can be provided using programming that is included at the authoring stage of the disc.
The screen-less modes described in AES-21id are a function of programming during the disc mastering stage. They use the standard BD capabilities and do not seek to limit them in any way.
This document has been unchanged since its publication in 2011. If you have input on revising or expanding this document please notify the Standards Manager. If no input is received by 2022/12/31 it will be stabilized.
Posted: Wednesday, October 12, 2022
AES69-2022, "AES standard for file exchange – Spatial acoustic data file format", a revised version of AES69-2020 has been published.
Posted: Friday, October 7, 2022
AES62-2011 AES standard for audio connectors - Modified XLR-3 Connector for Digital Audio, has been withdrawn
Withdrawl was unanimously recommended by SC-05-02 because no manufacturers have implemented the standard and it is confusing to have the standard suggest otherwise. The standard will remain available via the AES Standards Store, but copies are marked as withdrawn.
Posted: Saturday, October 1, 2022
The fall meetings of the AES Standards Working Groups have been scheduled for October, prior to the AES fall convention. The standards meetings will all be virtual. The working group meetings have been scheduled for 10 - 14 October. The plenary session where individual working groups report their progress in summary form will be on 24 October.
All standards meetings will be held using Zoom and are open to all interested parties. Membership in AESSC working groups is open to all individuals. AES membership is not required.
Posted: Saturday, October 1, 2022
The Call for Comment on DRAFT AES69-XXXX, " AES standard for file exchange – Spatial acoustic data file format " was published 2022-07-15.
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 an authentic and natural listening experience, but also depend on the acoustic quality of the applied spatial room impulse response (SRIR).
With a standardized file format for HRTF and SRIR data, each company can contribute its best algorithms, providing good personalized capture and/or rendering, allowing the consumer to choose a 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 is scalable to match the available rendering process and is designed to include source materials from different databases.
Posted: Friday, July 15, 2022
Some reports of the spring AES Standards Working Group meetings are now online.
SC-02-01 on Digital audio measurement
SC-02-02 on Digital audio interfaces
SC-04-03 on Loudspeaker modeling and measurement
SC-05-02 on Audio connectors
Additional reports will be posted as they become available.
Posted: Tuesday, June 28, 2022
The slides from Jeff Berrymans recent webinar "The AES70 Object Model and How To Use It" are available for download. These are copyrighted and are for individual educational use only. Reproduction or any other use requires written permission of the AES Standards Manager.
Posted: Thursday, June 2, 2022
