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Technical Documents

AESTD1004: Recommendation for Loudness of Audio Streaming and Network File Playback

Publication Note: This Technical Document was superseded by AES TD1008, Recommendations for Loudness of Internet Audio Streaming and On-Demand Distribution, published on September 24, 2021.

Editor: Bob Katz
Writers: Rob Byers; James Johnston; John Kean; Thomas Lund; Robert Orban; Adrian Wisbey
Prepared by: Study Group on Streaming Loudness, AES Technical Committee on Transmission and Broadcasting

Abstract

This AES Technical Document provides recommendations for loudness normalization of audio streaming and network file playback. It addresses loudness consistency among and within streams, production targets, mobile listening, short-form content, true-peak control, metadata, and the preservation of audio quality. The recommendations primarily apply to radio-like mono and stereo streams, including continuously transmitted programming and on-demand network audio such as podcasts.

Keywords: audio streaming; network file playback; streaming loudness; loudness normalization; target loudness; LUFS; true peak; short-form content; metadata; podcasts; mobile listening; online audio

Technical Document: AES TD1004.1.15-10
Published: October 19, 2015
Version: 1.0

References: See the PDF for the complete bibliography, technical standards, and definitions.