2013 Audio Loudness Management Seminar at HPA

Tuesday, February 19, 2013

8:00 a.m.

Registration Open

9:00 a.m.

Program Overview and ATSC Introduction: Jerry Whitaker (Host)


Loudness Background

  • Loudness background  - Pat Waddell, Harmonic
  • Audio complexity
  • The digital transition’s (unintended) consequences
    Comfort zone

    Enter H.R. 1084, the CALM Act

    ATSC S6-3 highlights:

    The USC Summit

    The LKFS tests
  • What’s in A/85?



  • Considering an update to BS.1770?
  • Regulatory process summary
  • December 2012: FCC calmly enforces CALM.


Measurement and Monitoring – Scott Norcross, Dolby Labs

  • ITU-R BS.1770 algorithm
  • Measuring content
    Real-time production

    Finished long-form


  • Loudness and the monitoring environment
    Lock down the monitor pot

    Mix with your ears, proof with the meter


TV Stations - Jim Starzynski, NBCUniversal

  • Actions required by your station
  • DTV’s audio loudness problem
  • NTSC analog audio vs. ATSC digital audio
  • Establish target loudness
  • DTV loudness compliance practices
    Real-time production

    Short-form content
  • NBC-U network and DTV station loudness theory of operation
  • Optimum DTV station loudness experience

12:00 p.m.

Working Noon Lunch: Ken Hunold, Dolby Labs…..current, real world DTV loudness examples


Content Creation

  • Loudness vs. dynamic range
    Increased loudness via compression is NOT better in an LKFS world

    Increased dynamic range IS better in an LKFS world
  • Short term and infinite metering
    What to use where and why
  • Numeric and histogram readings
    The “loudness speedometer” idea
  • Checking in a remote
    Levels vs. loudness
  • News, sports, entertainment production
    Simple workflow-friendly tricks for controlling image and protecting dialogue
  • Promotional material and advertisements
    What happens when trying to “game” the system
  • Optimizing the mix for the infrastructure of the content recipient
  • The comfort zone




  • What’s required of the MVPD for CALM
  • An overview of a large MVPD’s infrastructure
  • A systematic approach to loudness measurement
    Procedures in the field:
    MVPD interacting with content supplier

    MVPD interacting with subscriber

    Making and Documenting Measurements


Consumer Experiences

  • Explaining the DTV AC-3 distribution system
    5.1 markets

    Stereo markets

    The real-time downmix

  • How Dialnorm works in your decoder
  • How DRC works in:
    A TV with integrated decoder

       Default RF mode

    A/V receiver

       Choose your range

  • Using an LM-100 to monitor ATSC audio in a consumer system



    Channel readout


    Metadata readout

Panel Discussion: "Are We All CALM Now?" Skip Pizzi, NAB

4:00 p.m.

Closing Remarks: Jerry Whitaker, ATSC




The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards for digital television. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries.



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