IS 19052 : 2024/ISO 2969 : 2015 Cinematography - B-Chain Electro-Acoustic Reponse of Motion-Picture Control Rooms and Indoor Theatres - Specifications and Measurements
NATIONAL FOREWORD
This Indian Standard which is identical to ISO 2969 : 2015 'Cinematography - B-chain electro-acoustic reponse of motion-picture control rooms and indoor theatres - Specifications and measurements' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Photographic Equipment Sectional Committee and approval of the Mechanical Engineering Division Council.
This standard specifies the measurement methods and characteristic electroacoustic frequency response of the B-chain of motion-picture dubbing theatres (mixing rooms), screening rooms, and indoor theatres whose room volume exceeds 125 m3 (4 414 ft3). It is intended to assist in standardization of monitoring and reproduction of motion-picture sound in such rooms. The goal is to have constant perceived loudness and frequency response from installation to installation, and from position-to-position within an installation.
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standard. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear, referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.