How low frequency sound is measured
Under the title "Low-frequency immissions in leisure noise", a research project has been launched at the Technical University of Central Hesse (THM) to create the conditions for measuring low-frequency sound in a practical manner and evaluating it in a meaningful way.
The project, which runs until February 2027, envisages various steps. The first step is to create a comprehensive database. To this end, low-frequency immissions in particular will be measured in the vicinity of at least 200 music events and, at the same time, the hearing impressions will be subjectively assessed on site by sound experts. In addition, a three-digit number of building facades will be analyzed for their transmission characteristics in the bass range.
To date, there is a lack of more precise findings on this because the building acoustics standards do not adequately take this aspect into account. Extensive psychoacoustic experiments are also planned in order to investigate the specific disruptive effect of such event-typical noises on people and to derive suitable correction factors. To this end, complex test designs must first be developed and a suitable listening test environment set up.
