A/85, Techniques for Establishing and Maintaining Audio Loudness for Digital TelevisionApproved: 11 February 2021

This Recommended Practice provides guidance to broadcasters and creators of audio for high-definition (HD) or standard-definition (SD) television content. It recommends production, distribution, and transmission practices needed to provide the highest quality audio soundtracks to the digital television audience. This RP focuses on audio measurement, production, and postproduction monitoring techniques, and methods to effectively control loudness for content delivery or exchange. It recommends methods to effectively control program-to-interstitial loudness, discusses metadata systems and use, and describes modern dynamic range control.

Download Current Version: A/85:2013, “Techniques for Establishing and Maintaining Audio Loudness for Digital Television, with Corrigendum No. 1”, 11 February 2021.

Previous Version

Download A/85:2013, “Techniques for Establishing and Maintaining Audio Loudness for Digital Television”, approved 12 March 2013.

Download A/85:2013 Corrigendum No. 1, “SPL”, approved 11 February 2021.

A/85 French Translation

The French translation of “ATSC Recommended Practice: Techniques for Establishing and Maintaining Audio Loudness for Digital Television (A/85)” is provided as a convenience. The translation has not been approved by the ATSC. Implementers of the Recommended Practice are urged to confirm the details in the official version of A/85. Note that this translation is of the 26 June 2011 version of A/85. The current version is A/85:2013 with Corrigendum No. 1 (above). It is available only in English.

La traduction française de la Pratique recommandée par l’ATSC : Techniques d’établissement et de maintien de l’intensité sonore pour la télévision numérique (A/85) est offerte à des fins de courtoisie. La traduction n’a pas été approuvée par l’ATSC. Les responsables de la mise en œuvre de la Pratique recommandée doivent confirmer les détails de la version officielle de l’A/85. Pratique recommandée par l’ATSC : Techniques d’établissement et de maintien de l’intensité sonore pour la télévision numérique.

Download French Translation