Japanese industrial standards for the determination, declaration, and verification of noise emitted by machinery and equipment - State of the art

In Japan, progress has been made in establishment of national standards for the determination of noise emitted from machinery and equipment, especially during the past several years. These standards are divided into two groups: basic standards and individual standards. Basic standards for the determination of sound power levels and emission sound pressure levels are essentially in conformity with corresponding international standards. This is not necessarily true for individual standards for specific machinery and equipment. In this article, the status of these standards, basic standards, and individual standards, are described in detail.