GB/T 6881.2-2002

This standard specifies an engineering method for determining the sound power levels of small, movable noise sources by comparing their sound pressure levels to a reference source in a hard-walled reverberant test room. It is applied in acoustical testing environments, such as laboratories or quality control facilities, to evaluate the noise emissions of products like household appliances, office equipment, or small machinery. The method is suitable for sources that can be physically moved and positioned within the test room, providing a practical approach for manufacturers and testing bodies to ensure compliance with noise regulations.