There are two main types of noise monitoring: workplace monitoring and environmental noise monitoring, each depending on the location of the sound source. Environmental noise monitoring is one of the most common kinds of environmental monitoring and is most often carried out using a monitoring system.
Noise monitoring should occur whenever there is a risk of exceeding these noise levels limits. As a result of studies on noise and health connections, as well as policy-making procedures in various countries, governments have established national limit values and regulations for environmental noise.