GB/T 3222.1-2022
Acoustics—Description, measurement and assessment of environmental noise—Part 1: Basic quantities and assessment procedures (English Version)
- Standard No.
- GB/T 3222.1-2022
- Language
- Chinese, Available in English version
- Release Date
- 2022
- Published By
- 国家市场监督管理总局、中国国家标准化管理委员会
- Latest
- GB/T 3222.1-2022
- Replace
- GB/T 3222.1-2006
- Scope
- This document specifies the basic parameters used to describe the noise of the social environment and describes the basic evaluation process. At the same time, it stipulates the method of evaluating environmental noise, and gives a guideline for predicting the public's potential annoyance response to long-term exposure to various environmental noises. The sound source can be a single one or a combination of various sound sources. Methods for predicting annoyance responses are limited to areas of human habitation and associated long-term land use. People's noise responses to different sound sources with the same sound level have large differences. This document describes corrections to sounds of different characteristics. The term "evaluated sound level" is used to describe a predicted or measured value of objective sound to which one or more corrections have been added. Long-term social responses can be assessed in terms of these evaluation levels. Noise is evaluated as individual or combined sounds. When the competent authorities deem it necessary, their pulse characteristics, modulated characteristics and low-frequency characteristics, as well as different characteristics of road traffic noise, other forms of transportation noise (such as aircraft noise) and industrial noise may be considered. This document does not specify limits for ambient noise. Note 1: In acoustics, several different physical quantities used to describe sound (such as sound pressure, maximum sound pressure and equivalent continuous sound pressure) can be expressed in decibels (dB) of sound level. For the same sound, these The sound level of the physical quantity is usually different. This often causes confusion. Therefore, it is necessary to specify basic physical quantities (such as sound pressure level, maximum sound pressure level and equivalent continuous sound pressure level). Note 2: The physical quantities in this document are expressed in sound levels in decibels (dB). However, some countries use other effective forms to express basic physical quantities, such as expressing the maximum sound pressure in Pascal (Pa), or expressing the noise exposure in Pascal square second (Pa2s). Note 3: ISO1996 2 involves the determination of sound pressure level.
GB/T 3222.1-2022 Referenced Document
- IEC 61672-1 Electroacoustics - Sound level meters - Part 1: Specifications
GB/T 3222.1-2022 history
- 2022 GB/T 3222.2-2022 Acoustics—Description, measurement and assessment of environmental noise—Part 2: Determination of sound pressure levels
- 2009 GB/T 3222.2-2009 Acoustics-Description,measurement and assessment of environmental noise-Part 2: Determination of environmental noise levels
- 1994 GB/T 3222-1994 Acoustics--Measurement method of environmental noise
