How the reliable environmental noise measurement is ensured

- Development of acoustic standards and a new calibration service system -

Abstract

To ensure the reliable results in acoustic measurement such as environmental noise measurement, NMIJ/AIST has developed essential calibration techniques and established a traceability system based on the Japanese Measurement Law with acoustic standards at the highest level of accuracy. A new calibration service for reliable acoustic measurements under this system realized a minimum uncertainty in the environmental noise measurements, indispensable to sustain high quality of our daily life.