Some Applications of the Sound Intensity Technique to Noise Control in the Workplace

Abstract

Over a decade has elapsed since com m ercial sound intensity m easurem ent systems became available. A literature search has shown th a t the sound intensity technique has fou nd increasing applications in recent years. In this article, the principle and errors o f the sound intensity technique are briefly described. Four case studies are given to illustrate how the sound intensity technique can be applied to determ ine sound pow er under both laboratory and field conditions, to identify noise source and to measure sound transm ission loss o f com posite partitions "in situ." It has been shown that, provided the lim itations o f the sound intensity technique are understood, results obtained by the sound intensity technique enable effective noise control to be im plem ented in the workplace.sound intensity sound pow er sound transm ission loss noise source identification noise control

Particle Velocity Sensor and Its Application in Near-Field Noise Scanning Measurement

“…Sound intensity scanning is a near-field noise measurement method with high precision and efficiency, which can be used to measure sound power, identify and the position of noise source, etc. It is an effective means of monitoring and controlling of industrial vibration and noises [1].…”