Synergistic and dominant source effect of two simultaneous combined traffic sounds in outdoor settings

초록

This study is concerned with annoyance resulting from a of combination transportation noise, namely, aircraft-road noises and railway-road noises. Eighty four listeners participated in a jury test in the laboratory and evaluated the annoyance from individual noise and combined noises. Each stimulus reflected the actual outdoor conditions. When there is road traffic background noise, the annoyance from aircraft and railway noise decreased owing to sound masking effects. The total annoyance from combined sources is equivalent to the annoyance from a single dominant source; however, when the two combined sources are of equal annoyance levels, the experienced overall annoyance is higher than that of either of the individual noises. Data from the laboratory experiment are used in an equivalent annoyance model, with slightly different results compared to those of prior research. In this study, annoyance summation (total annoyance) is similar to acoustic pressure summation in outdoor conditions. (C) 2019 Elsevier Ltd. All rights reserved.

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