| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1066256 | Transportation Research Part D: Transport and Environment | 2011 | 8 Pages |
Using data from a realistic experiment conducted using recorded traffic sounds, the relationship between indicators of magnitude, spectrum, and temporal evolution of the sonic environment and the reported annoyance are analyzed. The exposure is characterized by the binaurally recorded overall indoor sound. It is found that a series of parameters derived from multiple linear models related to the temporal and spectral structure of the sound pressure level produces better models than the overall indoor A-weighted equivalent noise level. The descriptors thus complement this indicator, at least when exposure is based on overall indoor sound. Principle components amongst the exposure indicators studied relate to the detectability of the sound indoors and to the typical temporal difference between road and rail traffic. Linear models based on these indicators also outperform models based on source related façade.
Research Highlights► By analyzing coefficients of correlation between perceived annoyance and 1/3 octave band levels, a reduced number of 1/3 octave bands (31.5-125 Hz, 315 Hz, and 630-2500 Hz) were confirmed to be relevant for perceived annoyance of road/railway traffic noise. ► A principal components analysis (PCA) was used to group the indicators in two factors. The first factor measures the contribution of intruding road/highway or railway traffic noise to the indoor sound environment. The second factor distinguishes environments with road/highway traffic noise from rail traffic noise. ► The indicators presented here are an inexpensive and efficient alternative for identifying the part of the indoor noise important for perceived annoyance.
