A Study on BSR Noise and Sound Quality Property for Vehicle Interior Module

We consider the automotive gearbox rattle noise resulting from vibro-impacts that can occur between the idle gears under excessive velocity fluctuations of the shaft-driving gears imposed by engine torque fluctuation. Even if the rattling phenomenon has no consequence on reliability, it may be particularly annoying for vehicle interior sound quality and acoustic comfort. The main parameters governing such kind of vibrations are the excitation source associated with engine torque fluctuation which can be modeled by an imposed displacement of the driveline, the inertia of the idle gear, the drag torque acting during the free flight motion, and the impact laws. In the case of rattle, it is reasonable to assume that duration of impacts between teeth is very short compared to the excitation period. Then, these impacts are modeled by a coefficient of restitution law. The excitation source is not composed only with fundamental component but also with other harmonic components. This study presents some effects of these additional components on the dynamic response of the idle gear.

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Subjective Analysis and Objective Evaluation of Vehicle Sound Quality

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.716.674 ◽

2013 ◽

Vol 716 ◽

pp. 674-679 ◽

Cited By ~ 1

Author(s):

Yan Yan Zuo ◽

Shuai Li Zhou ◽

Wen Feng Zhou

Keyword(s):

Constant Velocity ◽

Paired Comparison ◽

Subjective Evaluation ◽

Objective Evaluation ◽

Sound Quality ◽

Comparison Method ◽

Acoustical Parameters ◽

Vehicle Interior ◽

Subjective Analysis ◽

Evaluation Test

The interior noise samples from four cars at different positions and different speeds were selected as the evaluation objects. The subjective evaluation test of sound quality preference was carried out with paired comparison method. Several objective psycho-acoustical parameters of these samples were calculated. By way of linear correlation and multi-dimensional regression analysis, an equation between the subjective evaluation of noise preference and the objective psycho-acoustical parameters was established. The results indicate that the vehicle interior sound quality preference under the good highway and the constant-velocity driving conditions is affected mainly by two psycho-acoustical parameters Loudness and Sharpness.

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Sound quality prediction and improving of vehicle interior noise based on deep convolutional neural networks

Expert Systems with Applications ◽

10.1016/j.eswa.2020.113657 ◽

2020 ◽

Vol 160 ◽

pp. 113657

Author(s):

Xiaorong Huang ◽

Haibo Huang ◽

Jiuhui Wu ◽

Mingliang Yang ◽

Weiping Ding

Keyword(s):

Neural Networks ◽

Convolutional Neural Networks ◽

Sound Quality ◽

Interior Noise ◽

Quality Prediction ◽

Deep Convolutional Neural Networks ◽

Vehicle Interior ◽

Vehicle Interior Noise

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A New Method of Sound Quality Analysis Based on Design of Experiment

International Journal of Pattern Recognition and Artificial Intelligence ◽

10.1142/s0218001416580015 ◽

2016 ◽

Vol 30 (05) ◽

pp. 1658001

Author(s):

Gangping Tan ◽

Gang Jie ◽

Ming Cao

Keyword(s):

Active Noise Control ◽

Objective Evaluation ◽

Sound Quality ◽

Interior Noise ◽

Quality Analysis ◽

Optimum Level ◽

Optimization Strategy ◽

Vehicle Interior ◽

Band Noise ◽

Vehicle Interior Noise

An optimization strategy of sound quality was proposed to improve sound quality inside a vehicle. The frequency of vehicle interior noise was divided into sub-bands by equivalent rectangular bandwidth (ERB) in the frequency domain, and the intensity of sub-band noise located in the mid-low frequency can be modified by using the measure of active noise control (ANC) in order to analyze its influence on the sound quality of original noise. Orthogonal experiments of vehicle interior noise were conducted according to experimental design. A model of sound quality objective evaluation (SQOE) was proposed as an experimental index. The role of sub-band on the model of SQOE was analyzed at different speeds so as to achieve the optimum level, optimum combination of sound quality and main factors. The results, obtained by implementing the optimization strategy of sound quality, were verified by means of tests. By validation, it showed that optimum sound quality can be achieved by changing the intensity of sub-band noise.

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Radiated Noise from Tire/Wheel Vibration

Tire Science and Technology ◽

10.2346/1.2137528 ◽

1997 ◽

Vol 25 (1) ◽

pp. 29-42 ◽

Cited By ~ 9

Author(s):

E-J. Ni ◽

D. S. Snyder ◽

G. F. Walton ◽

N. E. Mallard ◽

G. E. Barron ◽

...

Keyword(s):

Sound Pressure ◽

Sound Quality ◽

Vehicle Body ◽

Body Structure ◽

Vehicle Interior ◽

Noise Sources ◽

Airborne Noise ◽

Total Vehicle ◽

Noise Vibration ◽

Wheel Vibration

Abstract As a general trend, vehicle sound quality has significantly improved in recent years. This is primarily due to improved body structure and powertrain design. As demand for better vehicle sound quality increases, it is important to study all possible noise sources contributing to noise, vibration, and harshness (NVH). Tire vibration has long been recognized as a source of airborne noise. Some effects of wheel design on tire noise have also been well understood for sometime. But the dynamic interaction between tire and wheel designs and its effect on vehicle NVH, although frequently observed for many years, has only recently been identified in the 200–350 Hz frequency range. Different wheels can produce perceptible differences in vehicle interior sound pressure levels in a road test. Hence, the authors have developed a process to quantify and reduce noise caused by a vibrating tire/wheel assembly. This paper discusses the general flow of the process, which begins with the identification of NVH issues on a total vehicle level. Modeling and optimization of the aluminum wheel was chosen as the focus of this project for two reasons. First, the interior sound pressure level (SPL) around 285 Hz is about 5–7 dBA higher in a vehicle equipped with aluminum wheels rather than a steel design. Second, modifying the wheel is far more economical and faster due to its simplicity of design than the complexity of either the vehicle body structure or a tire.

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