Abstract
This paper describes the result of study and survey about working environment in the manufacturing industry by means of the quantitative evaluation method to acoustic environment, human impression. Main contents are summarized as follows: (1) The stress of worker was evaluated by original method (ChAIM) that modifies NASA-TLX. (2) In all factors about working environments, it was confirmed the noise influences to the worker. (3) The stress and efficiency of the worker with the knowledge base has a relation with the noise in working environment. (4) The improvement of the working environment by the optimum acoustic design based on the quantitative evaluation methods is important to administrate the manufacturing industries.
