Influence of various timbre parameters on the unpleasantness of tyre noise

• Road traffic noise accounts for the majority of perceived urban environmental noise and has important health consequences. The rolling noise of vehicle tyres is a major contributor to perceived road noise. The tread pattern of light vehicle tyres is already designed to minimize the amplitude of the noise emitted, but this is not the case for heavy vehicles. The European LEON-T project aims to minimize the nuisance of heavy vehicle tyres, especially noise. Prior to a study of the effects of tyre noise on sleep, an experiment was conducted to determine the timbre parameters of such noise. It was determined that the loudness, tonality and the frequency balance of the noisy part were the most variable psychoacoustics parameters and were used by listener to discriminate different category of noises. According to those results, tyre noises were synthetized with different combinations of those parameters. These stimuli were presented with headphones and participants were asked to self-assess their unpleasantness. The presentation will show the results of the experiment, i.e. which relationship of the studied parameters influence the most the unpleasantness. Those results will be correlated with future experiments on the physiological stress reaction provoked of the synthetized tyre noises.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

Nyckelord

Psychoacoustics

Tyre noise

Unpleasantness

Urban and Road noise

Publikations- och innehållstyp

vet (ämneskategori)

kon (ämneskategori)