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Qualis Audio CALM Act and Loudness Information
http://www.qualisaudio.com/calm_act_loudness.htm
In November 2009, the ATSC released recommended practice A/85: Techniques for Establishing and Maintaining Audio Loudness for Digital Television. It “focuses on audio measurement, production, and postproduction monitoring techniques, and methods to effectively control loudness for content delivery or exchange.” ... Qualis Audio's position.
Loudness Measurements and the CALM Act - Qualis …
http://www.qualisaudio.com/documents/TechNote-1.pdf
audio level measurements can be found in the Qualis Audio tech note “Loudness Measurement”. CALM Act requirements The CALM Act mandates the FCC to write rules enforcing “the ‘‘Recommended Practice: Techniques for Establishing and Maintaining Audio Loudness for Digital Television’’ (A/85), and any
Loudness Measurements and the CALM Act ... - Qualis Audio
http://www.qualisaudio.com/documents/TechNote-1-5-31-2011.pdf
between loudness measurements and subjective loudness is not perfect, but is generally good enough to make them practical and useful. A detailed explanation of BS.1770 loudness measurement and a comparison to conventional audio level measurements can be found in the Qualis Audio tech note “Loudness Measurement”. CALM Act requirements
Loudness Variation When Downmixing, 2013/05/06 - …
http://www.qualisaudio.com/documents/TechNote-4-5-6-2013.pdf
to this is provided by the Qualis Audio Sentinel downmix compatibility display. If severe enough, loudness will be affected. The result will always be a level reduction, further reducing the loudness of surround programs when reproduced in stereo. The loudness of surround and stereo presentation of various channel combinations was modeled.
Automated Control of Loudness Measurements 2011/07/13
http://www.qualisaudio.com/documents/TechNote-8-7-13-2011.pdf
The Qualis Audio Sentinel performs loudness measurements conformant to ITU BS.1770. One aspect of this standard is the requirement that measurements start and stop coincident with the beginning and end of the program or commercial being measured. It also requires that measurements of a program
Sentinel - Qualis Audio Home Page
http://www.qualisaudio.com/documents/Sentinel1P-120409.pdf
The Qualis Audio Sentinel has all your loudness measure-ment and logging requirements covered. Moreover, it measures virtually every parameter necessary to ensure optimum audio reaches your viewers. It operates unat-tended, reducing personnel requirements, and gives
Qualis Audio upgrades Sentinel loudness, surround …
https://www.tvtechnology.com/equipment/qualis-audio-upgrades-sentinel-loudness-surround-monitor-at-nab
Qualis Audio upgrades Sentinel loudness, surround monitor at NAB. By TVTechnology published 23 April 10. At the 2010 NAB Show, Qualis Audio showed AES/EBU and SDI versions of Sentinel, its network-based automated surround-sound monitor. The AES/EBU digital input version is available now; the SDI input version will be available in May.
Qualis Audio Home Page
http://www.qualisaudio.com/
Qualis Audio Home Page. comprehensive analysis alerts you to problems, helps you fix them. > overview > features > specifications.
Qualis Audio's Sentinel | TV Tech
https://www.tvtechnology.com/opinions/qualis-audios-sentinel
The Qualis Audio Sentinel is best described as an electronic listener that reports QoE judgments over a network connection. It measures loudness, downmix compatibility, intelligibility, levels, balance, hum, metadata and other relevant parameters.
Prism Sound: Qualis Audio Sentinel Overview
https://www.prismsound.com/test_measure/products_subs/qualis/products_sentinel_overview.php
Qualis Audio develops professional audio measurement and monitoring instruments for the broadcast industry with an emphasis is on 5.1, loudness, and QoE. Qualis Audio are the only company in this market with audio measurement as a central focus and with roots in test and measurement. Prism Sound is the European distributor for the Qualis Audio ...
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