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Pau Sellés
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Miércoles, 29 de enero 2025, 13:30
Acknowledging the fact that electric cars emit significantly less noise than their fuel-powered counterparts, it might seem advantageous for reducing noise pollution. However, this reduced acoustic detectability also increases the risk of accidents.
This is why a team of researchers from the Miguel Hernández University of Elche (UMH) is developing technical solutions to improve the detectability of these vehicles in urban environments that are particularly sensitive, such as parking exits or limited traffic zones.
To achieve this, the group is working on designing elements that allow for control over the rolling noise emitted by vehicles as they move over pavement. The aim is to enhance the vehicle's detectability from a specific position relative to it, where a potential pedestrian might be located, while controlling its noise levels in other areas around the vehicle.
Electric vehicles are equipped with what are known as warning sounds, intended to alert other road users, such as pedestrians or cyclists, of the vehicle's presence. However, this research is motivated by the low detectability these sounds may have in certain situations, such as having a sound emission lower than the noise levels in certain urban environments or being a sound that is not easily recognizable to pedestrians.
The group's most recent work focuses on studying acoustic barrier-type elements that allow for this control over sound propagation around the vehicle, improving its detectability at certain points around the vehicle without increasing noise levels in the rest of the environment.
The research is conducted by the research group of the Laboratory of Acoustic Engineering and Vibrations (LIAV) at UMH, which is part of the Institute of Research in Engineering of Elche (I3E). Among its leaders are Professor Nuria Campillo Davó and professors and researchers Ramón Peral Orts, Héctor Campello Vicente, Miguel Fabra Rodríguez, and David Abellán López.
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