Qualis Audio Sentinel

Sentinel Surround Sound Audio Monitor

Comprehensive audio QoE
The Qualis Audio Sentinel surround sound audio monitor measures, monitors and logs loudness and virtually every other parameter necessary to ensure optimum audio reaches your viewers. The electronic equivalent of a human listener, it operates unattended, eliminating continuous aural checks by skilled listeners. This unique ability significantly reduces personnel requirements, and attendant cost, while improving the consistency of audio monitoring.

Notification and logging
When problems are found the Sentinel can send problem specific notifications via email, contact closures or audible alarms. All measurements, alarms and logs are accessible via its network connection using a standard web browser.

The Sentinel logs all measured parameters. It can be configured to preserve this data as a continuous measurement history in your long-term storage repository.

Dual Stream™ loudness measurement
The Sentinel measures loudness to the latest ITU-R BS.1770, ATSC A/85 and EBU R128 standards, ensuring compliance with eventual CALM Act measurement and logging requirements. Patent-pending Dual Stream technology measures interleaved commercial and program segments – when pausing the loudness measurement on a program, it automatically performs a separate loudness measurement of the commercials.

Loudness and QA Forensics™ toolbox
The Loudness and QA Forensics toolbox is a comprehensive set of tools to investigate loudness exceptions and QoE issues. Selected segments of logged data may be analyzed, compared and contrasted, all within the main user interface. Standards compliant loudness measurements may be obtained over any user selected segments. The same displays employed when measuring and reporting errors in real-time are used for logged data.

Quantitative metrics
Using patent-pending technology, quantitative downmix analysis identifies stereo and mono downmix issues using objective quality criteria (such as how many dB individual mix elements may change when downmixed).This eliminates the need to monitor or interpret graphical displays, and allows automatic generation of alarms.

Other parameters the Sentinel measures include channel balance, hum, channel reversal, channel interchange, dead channels and digital interface errors. AES, SDI and Dolby Digital metadata are displayed and analyzed using patent-pending technology to detect intra- and inter-channel errors and inconsistencies.

The Sentinel proves compliance with the CALM Act, and delivers a competitive advantage in improved viewer audio QoE.

About Qualis Audio
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 Sentinel Surround Sound Audio Monitor.