Minimum requirements for noise protection in construction are predominantly determined by single number values. Since construction methods change regularly and noise protection against "new" sources must also be ensured, people's perception of noise must also be examined again and again. These investigations are carried out with so-called subjective listening tests and can lead to new design values and minimum requirements. In this project, first the software and hardware as well as the premises for subjective listening tests will be modified and implemented. Furthermore, listening tests for the assessment of noise events will be conducted and analysed. These results will be compared with results from the partner research institution, National Research Council Canada (NRC).
By carrying out and analysing the listening test as part of the measurement campaign, it was possible to confirm that the A-weighted outside level has little significance for the sound pressure level that ultimately prevails in the building and the noise annoyance there. Rather, the excitation spectrum of the traffic noise and the typical sound insulation of double--glazed insulated windows results in a maximum in the interior spectrum around approx. 200 Hz. In addition, hearing tests were carried out with the real measured interior noise levels, which allow further important conclusions to be drawn about the annoyance caused by these noises. Software applications were developed by using the mathematical-scientific software Matlab® and the results to date were presented and discussed at a scientific conference (DAGA 2023) and discussed there.
In addition to the results, this will expand the competence in listening tests at HFT Stuttgart. In this way, even closer cooperation with the research group of business psychologists on the topic of human judgement could be sought.
Further details can be found in the final report.
|Prof. Dr.-Ing. Berndt Zeitler
|National Research Council Canada
|Carl Zeiss Stiftung (Carl Zeiss foundation)
|CZS Special Fund Ukraine
|Call for proposal