標準號：ISO 1996-1-2003
中文標準名稱：聲學 環境噪聲的描述、測量和評價 第1部分:基本參量和評價方法
英文標準名稱：Acoustics - Description, measurement and assessment of environmental noise - Part 1: Basic quantities and assessment procedures
標準類型：Z32
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z32
國際標準分類號：13.140
適用范圍：This part of ISO 1996 defines the basic quantities to be used for the description of noise in communityenvironments and describes basic assessment procedures. It also specifies methods to assess environmentalnoise and gives guidance on predicting the potential annoyance response of a community to long-termexposure from various types of environmental noises. The sound sources can be separate or in variouscombinations. Application of the method to predict annoyance response is limited to areas where peoplereside and to related long-term land uses.Community response to noise can vary differently among sound sources that are observed to have the sameacoustic levels. This part of ISO 1996 describes adjustments for sounds that have different characteristics.The term “rating level” is used to describe physical sound predictions or measurements to which one or moreadjustments have been added. On the basis of these rating levels, the long-term community response can beestimated.The sounds are assessed either singly or in combination, allowing for consideration, when deemed necessaryby responsible authorities, of the special characteristics of their impulsiveness, tonality and low-frequencycontent, and for the different characteristics of road traffic noise, other forms of transportation noise (such asaircraft noise) and industrial noise.This part of ISO 1996 does not specify limits for environmental noise.NOTE 1 In acoustics, several different physical measures describing sound can have their level expressed in decibels(e.g. sound pressure, maximum sound pressure, equivalent continuous sound pressure). The levels corresponding tothese physical measures normally will differ for the same sound. This often leads to confusion. Therefore, it is necessaryto specify the underlying physical quantity (e.g. sound pressure level, maximum sound pressure level, equivalentcontinuous sound pressure level).NOTE 2 In this part of ISO 1996, quantities are expressed as levels in decibels. However, some countries validlyexpress the underlying physical quantity, such as maximum sound pressure in pascals, or sound exposure in pascalsquaredseconds.NOTE 3 ISO 1996-2 deals with the determination of sound pressure levels.