Duration measurements are increasingly used to monitor noise levels. The goal is to measure it over a longer period of time. There are different reasons for this. Often, people are not constantly bothered by a certain sound source, but on a regular basis. This makes it more desirable to measure the sound over a certain period of time. This is possible by installing advanced measurement equipment. KGI is specialized in these types of noise researches and it results in the most reliable measurement results. These are desirable in order to be able to take steps, for example in the case of noise nuisance from neighbours.