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

Author:

Tan Gangping1,Jie Gang2,Cao Ming1

Affiliation:

1. Nanchang University, Xuefu Avenue 999#, Nanchang City, P. R. China

2. Jiangling Chassis Co., Ltd, Jingni Avenue 168, Fuzhou City, P. R. China

Abstract

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.

Funder

Jiangxi Province Department of Education Science and Technology research project

Publisher

World Scientific Pub Co Pte Lt

Subject

Artificial Intelligence,Computer Vision and Pattern Recognition,Software

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