Tektronix’s Audio Test solutions can ensure audio loudness monitoring and compliance from Post Production, through to Broadcasters and Cable Operators. Our consistent Audio test and measurement approach makes Audio Loudness measurements the same way, regardless of signal or file format. This consistency enables traceability across the workflow and transmission chain.

Audio Test

Featured Content

Post Production And Broadcast: Audio Loudness Correction On Your File Based Content

Go beyond audio checks by automatically correcting audio loudness in the audio essence(s). Working with a variety of container types, audio level correction can be applied to the entire essence duration, and can be triggered by non-compliance to EBU R128 or ITU-1770-3 Audio Loudness Recommendations. Automated loudness correction works for Dolby Digital, Dolby Digital Plus, Dolby-E, PCM audio formats.

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Broadcast: Learning To Live With Audio Loudness Standards

New changes to the ITU-R BS.1770-3 standard for measuring and controlling Audio Loudness now allow operators and engineers to easily monitor the audio loudness of their programs. Learn more about these important changes through this Tektronix webinar. Part 1 provides information on the basics of the standards.

  • Managing audio loudness using the updated ITU-R BS.1770-3 standards
  • ATSC recommended practice A/85 that provide techniques for establishing and maintaining audio loudness (CALM Act)

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Part 2 describes how to use a Tektronix Waveform Monitor or Rasterizer to measure and monitor audio loudness.

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Cable Monitoring: The Storm Before the CALM: Quieting Loud Commercials On Cable

Cable operators have a tough job ahead: they must monitor the audio volume of commercials on many channels, not just one, and confirm that they have taken steps to control excessive loudness. This is a daunting task but help is on the way: the Sentry Video Content Monitor automates the process, 24/7, and keeps its own records. Download this Application Note to find out more.

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Recommended Equipment

Product Description
Cerify Cerify is a content analysis system for quality control of file based video and audio, ingested from a variety of different file formats and wrappers. That performs full automated verification and checking of syntax, video and audio parameters.
  • File Based Video and Audio Content Analysis
  • Supports Variety of video file formats
  • Supports Variety of audio file formats
  • MPEG-1/2, AAC, HE AAC, PCM (AES, BWF, AIFF, WAV), DV, WMA, Dolby D / AC-3, Dolby E, SMPTE 302M
  • Audio Loudness Measurement
  • Audio Loudness Correction
VQS1000 VQS1000 Video Quality Analysis Software is a reliable and sophisticated analysis algorithms applied to decoded MPEG-2 or H.264 video to identify stuck, black, macro-blocking, and compression artifacts. This enables operators to distinguish between impairments resulting from network distribution versus artifacts resulting from compression.
  • Trending of video and audio metrics
  • Analysis of decoded MPEG-2, AC-3, MPEG-2 AAC, and MPEG-4 AAC audio to
  • Identifies loudness problems in accordance with ITU-R BS.1770/1771
  • Triggered-capture of streams and logging of live data enable offline analysis
Sentry Ensure the quality of the viewing experience for your cable subscribers, increase uptime and reduce operational expenditures. Sentry® is a comprehensive video and audio quality monitoring solution for advanced video networks. It enables video service providers to deliver services with optimum quality.
  • Audio and Video Quality of Experience Scoring System
  • CALM Compliance Monitoring
  • Monitoring and reporting on audio volume level issues
  • Historical Reporting and Graphing
Waveform Monitors Tektronix provides a wide range of waveform monitors and rasterizers that support Analog Composite, Standard Definition(SD-SDI) to High Definition (HD-SDI) and 3G SDI video. With support a variety of support for Analog, Digital and Dolby audio formats.