Evaluation of Acoustic Noise Level and Impulsiveness Inside Vehicles in Different Traffic Conditions

Recently, the issue of sound quality inside vehicles has attracted interest from both researchers and industry alike due to health concerns and also to increase the appeal of vehicles to consumers. This work extends the analysis of interior acoustic noise inside a vehicle under several conditions by...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-03, Vol.22 (5), p.1946
Main Authors: Flor, Daniel, Pena, Danilo, Oliveira, Hyago Lucas, Pena, Luan, de Sousa, Jr, Vicente A, Martins, Allan
Format: Article
Language:English
Subjects:
Acoustic noise
Acoustics
alpha-stable noise
Artificial intelligence
Data acquisition
impulsive noise
Multimedia
Noise
Noise control
Noise levels
noise sources
Probability distribution
regression analysis
Severe acute respiratory syndrome coronavirus 2
Signal processing
Sound
Traffic
traffic noise
vehicle interior noise
Vehicles
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Summary:Recently, the issue of sound quality inside vehicles has attracted interest from both researchers and industry alike due to health concerns and also to increase the appeal of vehicles to consumers. This work extends the analysis of interior acoustic noise inside a vehicle under several conditions by comparing measured power levels and two different models for acoustic noise, namely the Gaussian and the alpha-stable distributions. Noise samples were collected in a scenario with real traffic patterns using a measurement setup composed of a Raspberry Pi Board and a microphone strategically positioned. The analysis of the acquired data shows that the observed noise levels are higher when traffic conditions are good. Additionally, the interior noise presented considerable impulsiveness, which tends to be more severe when traffic is slower. Finally, our results suggest that noise sources related to the vehicle itself and its movement are the most relevant ones in the composition of the interior acoustic noise.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22051946