SOUND INFILTRATION IN VEHICLES: QUANTITATIVE ANALYSIS OF INTERIOR–EXTERIOR NOISE

Bianca CĂȘERIU, Petruța BLAGA

Abstract


This study investigates the transmission of noise from the vehicle exterior into the cabin using a quantitative approach based on real acoustic measurements conducted under both stationary and dynamic conditions, across varied terrain. Statistical correlation and linear regression methods were applied to identify significant relationships between engine speed and the equivalent continuous sound pressure levels (Leq(A)) measured inside and outside the vehicle. Results indicate a robust acoustic dependency, with a coefficient of determination (R²) of 0.646, confirming the validity of the proposed model. The study provides a relevant tool for evaluating vehicle acoustic performance and supports engineering design decisions aimed at reducing interior noise levels perceived by occupants.

Full Text:

PDF

References


Chivu, A. I. (2013). Contribuții privind reducerea zgomotului în cabinele mașinilor mobile cu impact asupra confortului uman. Teză de doctorat, Universitatea „Eftimie Murgu” Reșița, Facultatea de Mecanică și Ingineria Materialelor, Departamentul de Mecanică. Nr. Decizie Senat din 26.02.2013.

Bartel, L., Mosabbir, A., Possible Mechanisms for the Effects of Sound Vibration on Human Health, Healthcare, ISSN 2227-9032, Basel, 2021.

Fahy, F., Foundations of Engineering Acoustics, Academic Press, ISBN 978-0-12-247665-5, Southampton, 2003.

Acharya, R., Chapter 8 – Noise, multipath and interference, in: Acharya, R. (Ed.), Satellite Signal Propagation, Impairments and Mitigation, Academic Press, ISBN 978-0-12-809732-8, pp. 247–278, 2017.

Xin, Q., 11 – Noise, vibration, and harshness (NVH) in diesel engine system design, in: Xin, Q. (Ed.), Diesel Engine System Design, Woodhead Publishing, ISBN 978-1845697150, pp. 759–821, 2013.

Li, Z., Kiyotaki, R., Terashima, O., Poddar, V., Murakami, T., On the resonance sound generated in a vehicle cabin moving at low speed due to braking force, Proceedings of the INTER-NOISE and NOISE-CON Congress and Conference, InterNoise21, Washington, D.C., USA, August 2021, Institute of Noise Control Engineering, pp. 3817–3823.

Masri, J., Amer, M., Salman, S., Ismail, M., Elsisi, M., A survey of modern vehicle noise, vibration, and harshness: A state-of-the-art, Ain Shams Engineering Journal, ISSN 2090-4479, 2024.

Wentzel, R., Development Strategies for Creating Quiet Vehicles: Insights from a 35-Year Veteran, Proceedings of the SAE Technical Paper Series, SAE International (Ed.), pp. –, ISBN –, Detroit, April 2023, SAE International, Warrendale.

Song, D., Hong, S., Seo, J., Lee, K., Song, Y., Correlation Analysis of Noise, Vibration, and Harshness in a Vehicle Using Driving Data Based on Big Data Analysis Technique, Sensors, ISSN 1424-8220, 2022.

Zakri, K.W., Sarwono, R.S.J., Santosa, S.P., Soelami, F.X.N., Modeling and Validation of Acoustic Comfort for Electric Vehicle Using Hybrid Approach Based on Soundscape and Psychoacoustic Methods, World Electric Vehicle Journal, ISSN 2032-6653, 2025.

Xue, H., Previati, G., Gobbi, M., Mastinu, G., Research and Development on Noise, Vibration, and Harshness of Road Vehicles Using Driving Simulators—A Review, SAE International Journal of Vehicle Dynamics, Stability, and NVH, Vol. 7, No. 4, pp. 555–577, ISSN 2380-2162, e-ISSN 2380-2170, 2023.

Yu, B., Chai, Y., Wang, C., Effect of the Exterior Traffic Noises on the Sound Environment Evaluation in Office Spaces with Different Interior Noise Conditions, Applied Sciences, Vol. 14, Article 3017, ISSN 2076-3417, 2024.

Flor, D., Pena, D., Pena, L., de Sousa, V.A., Jr., Martins, A., Characterization of Noise Level Inside a Vehicle under Different Conditions, Sensors, Vol. 20, Article 2471, ISSN 1424-8220, 2020.

Cășeriu, B. B. (2024). Studii și cercetări privind îmbunătățirea unor parametrii de confort în sistemele de transport. Teză de doctorat, Universitatea de Medicină, Farmacie, Științe și Tehnologie „George Emil Palade” din Târgu Mureș, Școala Doctorală de Litere, Științe Umaniste și Aplicate.


Refbacks

  • There are currently no refbacks.


JOURNAL INDEXED IN :