Traffic noise spectrum analysis: Dynamic modeling vs. experimental observations

Can, Arnaud; Leclercq, Ludovic; Lelong, Joël; Botteldooren, Dick

doi:10.1016/j.apacoust.2010.04.002

Cited by 107 publications

(60 citation statements)

References 17 publications

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“…These models predict the instantaneous contribution of single vehicles to the sound level at a receiver location over time, and account for dynamic effects of vehicular traffic, such as the excess noise emission due to acceleration of vehicles (although limitations still exist because of the relative scarcity of measurement data on emissions during acceleration, and because of the limited accuracy of the estimated traffic variables, in particular acceleration, within dynamic traffic models). This dynamic approach can be used to estimate more advanced indicators, such as indicators that assess the impact of traffic light cycles [26][27][28] or indicators that assess the temporal structure of the sound [29]. Clearly, this…”

Section: Introductionmentioning

confidence: 99%

A road traffic noise pattern simulation model that includes distributions of vehicle sound power levels

Coensel¹,

Brown²,

Tomerini³

2016

Applied Acoustics

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Annoyance, sleep disturbance and other health effects of road traffic noise exposure may be related to both level and number of noise events caused by traffic, not just to energy equivalent measures of exposure. Dynamic traffic noise prediction models that include instantaneous vehicle noise emissions can be used to estimate either of these measures. However, current state-of-the-art vehicle noise emission models typically consider a single emission law for each vehicle category, whereas measurements show that the variation in noise emission between vehicles within the same category can be considerable. It is essential that the influence of vehicles that are producing significantly more (or less) noise than the average vehicle are taken into account in modelling in order to correctly predict the levels and frequency of occurrence of road traffic noise events, and in particular to calculate indicators that characterize these noise events. Here, an approach for predicting instantaneous sound levels caused by road traffic is presented, which takes into account measured distributions of sound power levels produced by individual vehicles. For the setting of a receiver adjacent to a dual-lane road carrying free flow traffic, the effect of this approach on estimated percentile levels and sound event indicators is investigated. • The software is freely available as a Python plugin to the Aimsun microscopic traffic simulator.• Simulations show that this refined approach affects estimated percentile sound levels by up to 4 dB.• The influence of the approach on indicators for the number of noise events is illustrated.

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Section: Introductionmentioning

confidence: 99%

A road traffic noise pattern simulation model that includes distributions of vehicle sound power levels

Coensel¹,

Brown²,

Tomerini³

2016

Applied Acoustics

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“…The higher levels within the frequency range [400, 3000] Hz may have been judged unpleasant by participants. These levels are likely to be linked to higher vehicle speeds [22] for the crossroads with traffic lights than for the roundabout, for which vehicles have to slow down when approaching. levels around 16 kHz indicate the presence of braking noise with a shrill character [10], which may have been judged negatively by participants.…”

Section: Discussionmentioning

confidence: 98%

Impact of urban road traffic on sound unpleasantness: A comparison of traffic scenarios at crossroads

Trollé¹,

Terroir²,

Lavandier³

et al. 2015

Applied Acoustics

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“…Such low frequency waves can be practically measured in urban environments as being produced by either heavy industrial machineries, intense impulse noise, or, for a part, the traffic noise, 9,10 and they may propagate over long distances, compared with higher frequency waves.…”

Section: Introductionmentioning

confidence: 99%

Low frequency acoustic resonances in urban courtyards

Molerón

Félix

Pagneux

et al. 2014

The Journal of the Acoustical Society of America

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Urban courtyards can be regarded as open cavities in the urban area, in which resonances can be excited by waves generated in the neighboring streets. The aim of the present work is to experimentally and numerically investigate low frequency resonance phenomena in these configurations. Experiments are carried out in a scale model and a numerical study is performed with a coupled modal-finite elements method. The method enables the three-dimensional modeling of the acoustic field and thus to take into account the interactions between the courtyard and the street canyon that occur above the roof level, a particular characteristic of wave propagation in urban areas. The attention is focused on two aspects, the amplification of the sound level inside the courtyard and the acoustic attenuation in the street due to resonances. Experimental and numerical results are in good agreement and show a strong resonant behavior of these configurations.

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Traffic noise spectrum analysis: Dynamic modeling vs. experimental observations

Cited by 107 publications

References 17 publications

A road traffic noise pattern simulation model that includes distributions of vehicle sound power levels

A road traffic noise pattern simulation model that includes distributions of vehicle sound power levels

Impact of urban road traffic on sound unpleasantness: A comparison of traffic scenarios at crossroads

Low frequency acoustic resonances in urban courtyards

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