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一、前 言 最近,随着空气机械应用范围之日益扩大,其中为主的送风机、压缩机,迅速趋向于大型化和高速化,所产生的噪声也显著增加。因此,从噪声公害或工厂内工作环境的认识观点出发,研究噪声控制的措施,成了当务之急。不言而喻,空气机械的噪声声功率级是防止噪声工作的出发点。 过去,空气机械的噪声测量法,基本是采用测试机器周围的噪声声级方法。ISO（国际标准化组织）将噪声声功率级测量工作,纳人有关机器的标准规范的趋向日益明显。根据这样情况,想介绍一下还不大普及的噪声声功率级测量工作,供作参考。
I. INTRODUCTION Recently, with the expanding application of air machinery, air blowers and compressors, which are the main ones, rapidly tend to be large-scale and high-speed, resulting in a significant increase in noise. Therefore, it is imperative to study noise control measures from the perspective of noise pollution or the working environment in the factory. It goes without saying that the noise power level of air machinery is the starting point for preventing noise work. In the past, air machinery noise measurement method, the basic method is to test the noise level around the machine. ISO (International Organization for Standardization) The noise power level measurement work, including people on the standard specifications of the machine increasingly obvious trend. According to such a situation, would like to introduce the not-so-popular noise power level measurement work for reference.