BS 7445-1:2003 PDF

Description and measurement of environmental noise - Part 1: Guide to quantities and procedures Executive summary Guidance on quantities and procedures for description and measurement of noise in community environments. Abstract This part of BS 7445 defines the basic quantities to be used for the description of noise in community environments and describes basic procedures for the determination of these quantities. The methods and procedures described in this British Standard are intended to be applicable to sounds from all sources, individually and in combination, which contribute to the total noise at a site. At the present stage of technology this requirement is best met by adopting the equivalent continuous A-weighted sound pressure level as a basic quantity. Based on the principles described in this British Standard, acceptable limits of noise can be specified and compliance with these limits can be controlled. This British Standard does not specify limits for environmental noise. History and related standards This British Standard supersedes BS 7445-1:1991, which is withdrawn. This standard includes the following cross references: BS 5727, BS 7445-2, BS EN 61672-1, BS EN 61672-2, ISO 1999.