The Design of Vehicle Interior Noise Using Binaural Transfer Path Analysis

1999 ◽  
Author(s):  
K. Genuit ◽  
J. Poggenburg
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Transfer Path ◽  
Vehicle Interior Noise ◽  
Transfer Path Analysis

Case study: Separating source contributions of vehicle interior noise by operational transfer path analysis

2021 ◽  
Vol 69 (1) ◽  
pp. 39-52
Author(s):  
Ming-Hung Lu ◽  
Ming Une Jen ◽  
Dennis de Klerk
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Noise Sources ◽  
Tire Noise ◽  
Transfer Path ◽  
Vehicle Interior Noise ◽  
Transfer Path Analysis ◽  
Noise Contribution

The perception of vehicle interior noise is a key quality index to customers and automakers alike. By tracing noise back to key noise sources and paths, one can focus their refinement efforts. Aiming at the most efficient way to identify the primary noise sources in a vehicle cabin, this article establishes a framework of operational transfer path analysis (OTPA) for separating contributions of noise sources by operational measurements only. OTPA model design, measuring essentials and synthesis method used for separating vehicle interior noise contributions from the powertrain, tires andwindwere described in detail. To comprehend the implementation of OTPA on noise source separation, this article also addresses an exemplification study on an electric vehicle. In the case study illustrated, both spectral map and order extractions were used to validate if the OTPA synthesized results of the powertrain noise contribution agreed with the measured results. Tire noise contribution was validated using the tires driven by the dynamometer along with all other systems switched off. With well-validated OTPA model for the powertrain and tires, further individual path breakdown of the powertrain and tire noise then was investigated to identify key contributors to the interior noise. After clearly separating interior noise contributions, one therefore could design effective countermeasures to mitigate the dominant noise sources. With appropriate scheme of measurement and synthesis, the OTPA technique could therefore effectively serve target setting and refinement focus at foremost noise contributors.

Analysis and Optimization of Interior Noise Based on Transfer Path Analysis

2021 ◽  
pp. 542-551
Author(s):  
Wenqiang Liu ◽  
Junfeng Hu ◽  
Fengxin Jiang ◽  
Bing Gong ◽  
Xiaolong Deng ◽  
...  
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Transfer Path ◽  
Transfer Path Analysis

Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

2020 ◽  
Vol 235 (1) ◽  
pp. 273-287
Author(s):  
Ningning Liu ◽  
Yuedong Sun ◽  
Yansong Wang ◽  
Pei Sun ◽  
Wenwu Li ◽  
...  
Keyword(s):  
Path Analysis ◽  
High Speed ◽  
Noise Signal ◽  
Interior Noise ◽  
Analysis Model ◽  
Noise Sources ◽  
Wind Noise ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Path Analysis Model

Owing to the continuous development of the automobile industry, increasingly stringent performance requirements for noise, vibration, and harshness of automobiles are being presented. Interior noise control in high-speed vehicles has not been adequately addressed, owing to the complex mechanism of noise generation. As simulations performed previously focused on vehicle wind noise and tyre noise cannot adequately predict the effect on passenger ear-side noise, these issues are investigated in this study. Their effects on passengers are investigated using transfer path analysis. An anti-noise operational transfer path analysis is proposed to study noise generated in high-speed vehicles. The established anti-noise operational transfer path analysis model can eliminate crosstalks between noise source signals of different transmission paths. The model is validated by comparing the measured and calculated values of the anti-noise operational transfer path analysis model. The coherence of the input noise signal and the ear-side noise signal of the passenger is assessed using coherence analysis. By calculating and categorising the contributions of different noise sources in different locations and types, the main noise sources affecting passenger comfort are determined. The result indicates that the main noise sources affecting the passenger’s ear-side noise change from engine noise to left-A wind noise and tyre radiation noise with increasing vehicle speed, in which the proportion also increase. The proposed anti-noise operational transfer path analysis is suitable for the interior-noise analysis of high-speed vehicles, and this study may serve as a reference for future studies regarding active and passive noise control in high-speed vehicles.

Estimation of interior noise by using hybrid transfer path analysis

2008 ◽  
Vol 56 (4) ◽  
pp. 256 ◽  
Author(s):  
Sung-Jong Kim ◽  
Ki-Gug Og ◽  
Su-Gon Kim ◽  
Sang-Kwon Lee
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Transfer Path ◽  
Transfer Path Analysis

scholarly journals Transfer Path Analysis of Interior Noise above Bogie Area of High-speed Train

2020 ◽  
Vol 56 (4) ◽  
pp. 168
Author(s):  
GAO Yang ◽  
ZHU Ziwei ◽  
XIE Suming ◽  
NIE Jiaxing ◽  
HAN Jian ◽  
...  
Keyword(s):  
Path Analysis ◽  
High Speed ◽  
Interior Noise ◽  
High Speed Train ◽  
Transfer Path ◽  
Transfer Path Analysis
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