In This Section
- Acoustics and Sound Reinforcement
- Archiving Restoration and Digital Libraries
- Audio for Games
- Audio for Telecommunications
- Audio Forensics
- Automotive Audio
- Coding of Audio Signals
- Electro Magnetic Compatibility
- Fiber Optics for Audio
- Hearing and Hearing Loss Prevention
- High Resolution Audio
- Human Factors in Audio Systems
- Loudspeakers and Headphones
- Microphones and Applications
- Network Audio Systems
- Perception and Subjective Evaluation of Audio Signals
- Recording Technology and Practices
- Semantic Audio Analysis
- Signal Processing
- Sound for Digital Cinema and Television
- Spatial Audio
- Transmission and Broadcasting
AES Technical Committee
Sound for Digital Cinema and Television
Chair: Brian McCarty (Send Email) Chair: Julius Newell (Send Email) Forum: Committee Discussion Forum
SOUND FOR DIGITAL CINEMA AND TELEVISION - SHOWING LEADERSHIP ON A SERIOUS ISSUE
We've uploaded into the documents section two investigative reports on the growing problems of movie theaters that are just too damn loud. As AES members know, the issue of loudness is at the forefront of many of our audio community. The recording group has been dealing with the "Loudness Wars" for years. And those involved in PA and Live Sound are acutely aware of their responsibilities to the artists as well as the public when they present a live concert.
While the music and TV markets see consumers in ultimate charge of the loudness of their particular device, Live Sound and Cinema leave the volume control in the hands of the professionals.
In cinema, we're finding that the industry has abandoned their responsibilities, with the ensuing chaos that's been created. The Standards that would seem to govern the situation were written for films with analog sound, not fullband digital. That Standards organization rejected calls from their members for new work to control the situation. Likewise the handful of companies who should be in leadership positions on this issue, based on the fact that they've booked healthy profits on supplying the film industry with these encoding and processing tools, have cowered at leadership now. Fingers are pointed at the Hollywood producers (and all film producers generally) who are the source of this audio weaponry. They plead "artistic freedom" - essentially suggesting that they have a Second Amendment right to do as they please (substituting "volume control" for "gun").
And the newly-launched "immersive sound" formats have the capability of even being louder, with anecdotal information on their use (and abuse) already trickling in.
Well, the consumers have fought back. A week ago in the Connecticut State legislature, a bill was filed to put an absolute volume limit on cinemas at 85dB. This would be a virtually impossible standard to either accept or meet. But it's not an unreasonable response from consumers and health professionals who are frustrated with what they believe is an organized game of "find the pea" when they try to pin down the producers, audio companies, and theater owners in their attempts to find solutions.
Last year at the Rome Convention, a group of concerned European sound engineers reported on the scope of this issue and the potential for legislation if voluntary and workable solutions were not forthcoming from the industry. This group, led by Eeelco Grimm and Florian Camerer (both among those responsible for the successful implementation of the ITU BS-1770 on the control of TV commercial levels) have been working to gather the data necessary to formulate a solution to this issue.
The AES and SDCTV Technical Committee, under the leadership of Joules Newell and Brian McCarty, will continue to work towards identifying an appropriate engineering-based solution to the problems. We encourage interested members of SDCTV and other AES TC's to contribute their expertise to finding a proper engineering solution, instead of ceding our responsibilities to politicians who are ill equipped to do our jobs.
Areas of Concentration
Your TC is working hard to prepare an interesting program for the next Convention, the 136th, in Berlin starting April 26th. As we've seen, the "Sound for Pictures" track is proving extremely information for the working audio professional. As we all know, the largest group of working audio professionals are doing "Sound for Picture" in one form or another.
A tremendous amount of work has been done by our subcommittee on Cinema Loudness, and the issue grows in intensity (haha) around the world.
The SDCTV TC meeting agenda is now being assembled - if you have any issues that you'd like to table at this upcoming meeting, now is your chance to have it included.
We look forward to seeing all of you in Berlin!
Current Areas Of Work
Standards work to produce a modern, workable, and accurate procedure to test and calibrate a sound system is underway as SC-04-08.
Standards work has been proposed to develop systems to educate the sound production community in evaluating overall sound levels being re-recorded for films, along with tools that can be used by cinema operators to protect their audiences from overly-loud movies.
FOR THOSE WORKING ON THE LOUDNESS SUBCOMMITTEE . . .
Co-Chair Eelco Grimm has advised that Belgium has now implemented a new law on cinema sound levels. Frustrated by the issue, the law requires that the cinema processor, set-up at with the calibrated level equalling the "7" setting on the processor, cannot be played for an audience louder than "5". This is a huge overall level reduction - and reduces the dialog level along with everything else.
We will be getting presentations on this issue, and discuss possible AES Standards activity on the subject, in Berlin.
These documents do not necessarily express the official position of the AES on the issues discussed at these meetings, and only represent the views of committee members participating in the discussion. Any unauthorized use of these publications is prohibited. Authorization must be obtained from the Executive Director of the AES: Email, Tel: +1 212 661 8528, Address: 60 East 42nd Street, Room 2520, New York, New York 10165-2520, USA.
2013-7-11 Loudness Metering
Description: Engineering Brief presented at Rome 134 by Alessandro Travaglini
2013-7-11 HELM: High Efficiency Loudness Model for Broadcast Content
Description: Paper from Budapest 132 on HELM: High Efficiency Loudness Model for Broadcast Content, submitted by Alessandro Travaglini, et. al.
2013-7-11 Defining the Listening Comfort Zone in Broadcasting through the analysis of the Maximum Loudness Levels
Description: Paper presented at Budapest 132 by Alessandro Travaglini, et. al. on loudness broadcast issues
2012-4-27 Cinema & Home Theater Audio Compatibility
Description: "Implications of Standards Changes in Cinema Sound on DVD and Home Theater" Wilfried Van Baelen
2012-4-21 A New Draught Proposal for the Calibration of Sound in Cinema Rooms
Description: A New Draft Proposal for the Calibration of Sound in Cinema Rooms from Philip Newell
2012-4-15 Is the X Curve Damaging Our Enjoyment of Cinema?
Description: A technical examination of the theory behind the X-curve. Paper originally given to SMPTE 2011 Sydney Conference by Glenn Leembruggen
2012-4-11 Dr. Toole Presentation on Cinema Audio
Description: A PowerPoint presentation prepared by Dr. Floyd Toole concerning issues of audio reproduction and the current standards
2012-4-11 Newell et. al. Cinema Standardization V.2
Description: Reference documents from Philip Newell et. al. on Cinema Standardization
2013-10-11 TC-SDCTV 135 Agenda (v2.0)
Description: Second draft version of TC Agenda for New York 135th Convention
2013-9-10 AES 135 TC AGENDA (V1.0)
Description: Agenda for TC meeting in New York
2013-7-11 High Efficiency Loudness Model
Description: Powerpoint from Alessandro Travaglini, et. al. for reference in Cinema Loudness Group
2013-4-22 ROME TC MEETING AGENDA - v4
Description: One additional discussion item added under "Immersive Audio"
2013-4-20 ROME AGENDA - TC-SDCTV v3
Description: Updated version 3 of agenda for TC meeting in Rome, Italy
2013-4-17 ROME AGENDA - TC-SDCTV
Description: Draft agenda for our TC meeting in Rome, Italy during the 134th Convention.
2012-10-13 SFO TC SDCTV MEETING AGENDA v2.0
Description: Revised meeting agenda for TC meeting at San Francisco convention. Meeting time scheduled for Sunday, Oct 28, at 9AM.
2012-10-1 TC SDCTV Meeting Agenda (v1.0)
Description: Proposed agenda for the TC Sound for Digital Cinema and Television. Note a discussion on room measurement techniques and sound system performance may be proposed to become standards work
2012-4-11 Budapest April 28 Agenda
Description: Agenda for Budapest TC Meeting of this Group
Floyd Toole Francis Rumsey Kurt M. Graffy Neil A. Shaw Peter Mapp Robert Ellis-Geiger Garry Margolis Steve Martz Andreas Floros Bernardus Kok Vene Garcia Phil Manchester Linda Gedemer Brian McCarty Glenn A. Leembruggen David Murphy Julius Newell Philip Newell Dmitri Chernov Ron Lagerlof Alessandro Travaglini Sean Richardson Paul Keller Larry Elliott Brian Claypool Steve Shurtz Mark Genfan Steve Haas Jennifer Rarick Curt Hoyt Wilfried Van Baelen John Burnett Brian Long Rod Elliott Carlos Ronconi Kent Siew Miles Rogers Chuck Mulhearn Jeff Levison Peter Soper Darren Ma David Revel Shusen WANG M.K. Ramkrishnan Gunter Oehme Bob Claeys Nicolas Hamon Eelco Grimm Florian Camerer Bert Van Daele Alan Haigh Richard Van Everdingen Steve Strassberg Robert Lee Kazuho Ono Bruce Black Mark Mayfield Fei Yu
To request membership in this Technical Committee please email the Chair by using the link above.