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ISO 21727:2016

Cinematography — Method of measurement of perceived loudness of short duration motion-picture audio material ISO 21727:2016

Publication date:   Apr 25, 2016

General information

90.93 Standard confirmed   Jan 17, 2023

ISO

ISO/TC 36 Cinematography

International Standard

37.060.99   Other standards related to cinematography

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Scope

ISO 21727:2016 specifies a method of measurement of short duration motion-picture sound that allows assessment of the subjective loudness and annoyance of the sound recording when replayed at the recommended replay level in rooms aligned with the characteristics of ISO 2969. The specified method of measurement assesses the entire duration of the sound recording, typically commercials and trailers that do not exceed 3 min in length, with suitable channel summation, frequency weighting and time integration. It does not specify a maximum recommended level for such material and is solely aimed at describing a measurement method.
NOTE Typical recording and replay levels are discussed in Annex A.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 21727:2004

NOW

PUBLISHED
ISO 21727:2016
90.93 Standard confirmed
Jan 17, 2023

CORRIGENDA / AMENDMENTS

ABANDON
ISO 21727:2016/NP Amd 1

IN_DEVELOPMENT
ISO 21727:2016/AWI Amd 1