Reaffirmed 2021

NATIONAL FOREWORD

This Indian Standard (Second Revision) which is identical with ISO 354 : 2003 ‘Acoustics - Measurement of sound absorption in a reverberation room’ issued by the International Organization for Standardization was adopted by the Bureau of Indian Standards on recommendation of the Audio, Video and Multimedia Systems and Equipments Sectional Committee and approval of the Electronics and Information Technology Division Council.

This standard was originally published in 1976 and subsequently revised in 1987. First revision was based on ISO/R 354 : 1963. The second revision of this standard has been undertaken to align it with the latest version of ISO 354 : 2003.

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 Standards. 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’.

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.