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随着工业、交通运输、城市建设事业的发展以及社会公共活动、家用电器的增长,噪声源亦在急剧增长,城市环境噪声已成为主要的社会公害之一.关于环境噪声的允许标准,早先有ISO(国际标准化组织)R(建议标准)1996(1971年),后来又被一组新标准所代替.本文先介绍一些由上述标准所推荐的描述环境噪声的最基本量,以及不同国家所用的另外一些评价量.接着叙述B&K公司1985年新产品4427(老型号为4426)型噪声级分析器对许多实际测量场合的应用.
With the development of industry, transportation and urban construction, as well as the growth of social public activities and household appliances, the source of noise is also increasing sharply, and urban environmental noise has become one of the major social hazards. Regarding the allowable standard of environmental noise, ISO (International Organization for Standardization) R (Proposed Standard) 1996 (1971), later replaced by a new set of standards This article first introduces some of the most basic quantities recommended by the above-mentioned standards to describe environmental noise and what countries Other evaluations Next, the B & K 1985 new product 4427 (old model 4426) noise level analyzer for many practical measurement applications.