在工作场所,特别是环境噪声高的工作场所,设立适当的声信号,例如险情听觉信号,用来提示人们防止人身及设备发生事故是十分必要的。然而,在诸多声信号中,在各种不同的工作场所,使用什么样的声信号最实用、最科学?这就需要制订工作场所的险情信号——险情听觉信号的安全要求和设计规范来解决。本标准是在等效采用ISO7731国际标准的基础上制订的。由中国标准化与信息分类编码研究所和煤炭科学院共同负责编制工作。对本标准的编制,有以下三点说明。 (1)人耳的听阈反映了人耳听觉特性,40多年来,许多国家测定的结果表明,听阈 In the workplace, especially in places with high environmental noise, it is imperative to set up appropriate acoustic signals, such as dangerous auditory signals, to prompt people to prevent personal and equipment accidents. However, among the many acoustic signals, what kind of acoustic signals are most practical and scientific in different workplaces? This requires the development of safety signals and design codes for the danger signals in the workplace . This standard is equivalent to the use of ISO7731 international standards developed on the basis of. By the China Institute of Standardization and Information Classification and coding co-responsible for the preparation of the work of the Coal Academy. The preparation of this standard, the following three instructions. (1) The auditory threshold of the human ear reflects the auditory properties of the human ear. For more than 40 years, the results of many national tests show that the hearing threshold