API Resources
Theme

Choose how MSRBot.io looks on this device.

Auto (match system) Light mode Dark mode

Preference is stored in this browser only.

SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015)
[ACTIVE]

Précis of the TC-25CSS Theater Testing Report

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
SMPTE Mot. Imag J.
Volume
124, No. 5, pp. 43–47
Abstract
In 2014, SMPTE’s B-Chain Study Group Theater Testing Data Report Group released a major report about the acoustical performance of sound systems in four cinemas and two dubbing stages. This paper provides a précis of this B-Chain report, which is probably the most comprehensive in-depth analysis of cinema audio spaces that has ever been undertaken. The report presents numerous frequency and temporal responses for these sound systems, with in depth analysis of the center channel systems. Being based on the measured impulse responses of the systems, the report’s measurement process departed from current SMPTE standardized methods, which are “time blind.” As such, considerable insights have been gained into the behavior of these systems and the way in which frequency responses develop over time. Of particular interest is the minimal contribution that the reverberant sound field makes to the high-frequency responses. The measured responses indicate significant disparity among venues in the responses at low and high frequencies. One of the report’s conclusions is that the commonly-accepted acoustic mechanism for the roll off of high frequencies known as the X curve does not occur. Discussion of the report’s key features such as the analysis methods, trends in the responses, and conclusions is provided in the paper.
Publication Date
2015-07-01
DOI
10.5594/j18575
ISSN
Print: 1545-0279 | Electronic: 2160-2492
Link
https://doi.org/10.5594/j18575
Author(s)
Glenn Leembruggen
bio
Glenn Leembruggen is a principal of the consulting engineering firms Acoustic Directions and ICE Design in Australia and an Associate of Sydney University. Having studied electrical engineering and acoustics, his skills encompass loudspeaker and sound system design, room acoustics and noise control. Much of Leembruggen’s work includes designing sound systems that deliver extremely high quality sound and intelligibility for courtrooms, parliaments, transport terminals, road tunnels, cathedrals and performance spaces. Since 1992, Leembruggen’s team has received many awards for its sound system designs. In 2014, he undertook the editorial duties and the data processing for the substantial B Chain Theatre Testing Report. Underpinning Leembruggen’s work is his passion for sound and music; marrying the physics and engineering with the aural experience and playing saxophone in a Chicago style electric rhythm and blues band. His research interests include Speech Transmission Index (STI) and the differences between subjective and measured speech intelligibility, beam-steered loudspeakers, and acoustic absorption systems. Leembruggen has authored a number of AES and SMPTE Journal papers on sound system design, STI and cinema-screen behavior and is a frequent presenter at IOA and AES conferences on aspects of intelligibility, electro-acoustic design and acoustics. Leembruggen is a Fellow of the Institute of Acoustics, and member of the the Audio Engineering Society, the Acoustical Society of America, the Australian Acoustical Society, and SMPTE and is a member of the Maintenance Team for the STI standard IEC 60268-16.
Keyword(s)
B-Chain
Copyright
© 2015 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-j18575.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree
Reference this Doc

Plain text (ISO 690 compliant)

Preview:
Glenn Leembruggen; Précis of the TC-25CSS Theater Testing Report, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18575
Snippet:
Glenn Leembruggen; Précis of the TC-25CSS Theater Testing Report, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18575

HTML (ISO 690 compliant)

Preview:
Glenn Leembruggen; Précis of the TC-25CSS Theater Testing Report, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18575
Snippet:
<span class="citation">Glenn Leembruggen; <cite>Précis of the TC-25CSS Theater Testing Report</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at <a href="https://doi.org/10.5594/j18575" target="_blank" rel="noopener">https://doi.org/10.5594/j18575</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
Glenn Leembruggen; Précis of the TC-25CSS Theater Testing Report, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015
doi: 10.5594/j18575
url: https://doi.org/10.5594/j18575
Snippet:
<li>
Glenn Leembruggen; <cite id="bib-10-5594-j18575">Précis of the TC-25CSS Theater Testing Report</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015
<span class="doi">10.5594/j18575</span>
</li>

Referenced By