AES Technical Committee

Sound for Digital Cinema and Television

Chair:    Brian McCarty    (Send Email)
Chair:    Julius Newell    (Send Email)
Forum:    Committee Discussion Forum


We've uploaded into the documents section two investigative reports on the growing problems of movie theaters that are just too 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.

The AES and SDCTV Technical Committee 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.

Areas of Concentration

This committee is associated with the following sessions at AES Berlin 2014:
Challenges and Opportunities in Audio for Ultra-High-Definition Television
World-Class Cinema Sound Mixers Discuss Their Craft
Music Production For Film — A Master Class
Creative Dimension of Immersive Sound — Sound in 3D
Cinema Sound—Theater Loudness and Standards Issues


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!

Brian McCarty

Jules Newell

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.


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.

Meeting Report:

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

Technical Report:

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

Committee Members

 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  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 
 Roger Dressler 

To request membership in this Technical Committee please email the Chair by using the link above.

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