|AES Standards Committee chair Bruce Olson|
New York, NY (March 13, 2013)—The AES Standards Committee has created a new set of standards working group, SC-04-08, on Measurement and Equalization of Sound Systems in Rooms, committee chair Bruce Olson announced this week. Ben Kok, an acoustic consultant from the Netherlands, will chair the working group.
Two newly initiated projects have been assigned to this group, developed from an initial proposal presented by the AES Technical Committee on Sound for Digital Cinema and Television, chaired by Brian McCarty.
The first project, AES-X218, is intended to document parameters affecting the audience experience of a sound system in a generalized room, and identify appropriate objective methods of measurements to quantify them. The intent is to find tools and procedures to measure the performance of a loudspeaker system in a room, and support accurate, reliable calibration of this system to a specified performance. The findings of the working group will be published in an AES Standards Information Document.
The rationale for this project considers that the measurement of sound systems in rooms, including but not limited to cinema B-chains, currently relies on empirical measurement techniques developed in the 1970s. Modern methods and equipment should offer simpler and more accurate ways to calibrate rooms with greater precision. This project will review the parameters that affect the audience experience in these rooms, and the objective methods of measurement necessary to quantify them. This will provide a basis for more detailed standardization for measurements and calibration protocols for controllable parameters.
The second project, AES-X219, will specify a method of measurement for frequency and impulse response of sound systems in auditoria. The project is intended to produce a Standard, and the development discussions are expected to draw on modern measurement techniques.
The audience experience of sound reproduced through loudspeakers in an auditorium can vary greatly. In many applications where sound is reproduced in auditoria, a predictable performance is valued. While a number of different electro-acoustic and acoustic parameters contribute to this experience, a standard method of measuring the frequency and impulse response of the sound as presented to the audience by a loudspeaker system will be a necessary part of any more general solution.
The first face-to-face meeting of working group SC-04-08 will be held at the 134th AES Convention in Rome May 4-7, 2013.
For more information on the projects, visit http://www.aes.org/standards/meetings/new-projects.cfm