The Audio Communication and Technical Acoustics Groups of the Technical University of Berlin, together with the company HFC Human-Factors-Consult GmbH, are devoting themselves to the "Testing of psychoacoustic parameters for innovative noise reduction strategies" (FE 02.0431/2019/IRB) on behalf of the Federal Highway Research Institute (BASt).
In three successive experiments, we address the questions of which perceptual qualities people associate with road traffic noise and how they evaluate it overall in terms of annoyance. In particular, we are interested in how conventional and new noise control measures change the evaluation of recipients and which psychoacoustic parameters play a role in this process. Psychoacoustic parameters are technical measures that can be used to describe auditory sensations inherent in noise sources, such as 'loudness', 'sharpness', 'roughness', 'fluctuation strength' and 'tonality'. The sum of these sensations has an influence on how annoying we perceive a (traffic) noise.
A new approach to noise control is acoustic masking, in which sounds are added to existing sound sources. These can be, for example, natural sounds such as the sound of rivers, birds chirping or fountains splashing. In the project, we want to find out whether these and other new noise abatement measures can reduce the annoyance of traffic noise and which new psychoacoustic parameters and models can make a significant contribution to this.
The studies in the project are conducted together with our partners in the Mixed Reality Design Lab of TU Berlin and UdK Berlin.
This report is based on parts of the research work carried out on behalf of the Bundesministerium für Verkehr und digitale Infrastruktur, represented by the Bundesanstalt für Straßenwesen, under FE-Nr. 02.0431/2019/IRB. Responsibility for the content lies solely with the author..