国家标准局最近又批准发布了7个声学国家标准,这些标准是由全国声学标准化技术委员会归口和审查通过的,其编号、名称及发布、实施日期如下: GB 3833-83 窄带噪声在扩散和正射自由场中等响度时声压级之间的关系 83-08-23发布,84-07-01实施; GB 3947-83 声学名词术语 83-11-26发布, National Bureau of Standards has recently approved the issuance of seven acoustic national standards, these standards by the National Acoustic Standardization Technical Committee and approved by the centralized passage, its number, name and release, the implementation date is as follows: GB 3833-83 Narrowband noise in the proliferation and orthophotos Free field equal loudness sound pressure level 83-08-23 release, 84-07-01 implementation; GB 3947-83 acoustic terminology 83-11-26 release,