Method for evaluating road noise based on masking effect

Abstract

The invention is suitable for the field of noise processing technology improvement, and provides a method for evaluating road noise based on a masking effect. The method comprises the steps: S1, collecting data of howling working conditions of a plurality of vehicles of different types; S2, arranging howling working condition data acquired by a real vehicle, and adding a plurality of virtual samples; S3, subjectively evaluating all sound samples and objectively extracting sound quality objective parameters; S4, obtaining objective parameters with high relevancy with subjective evaluation through correlation analysis; and S5, judging whether the obtained objective parameters meet requirements or not, if YES, establishing a function relation between the subjective score and the objective parameters by using multiple linear regression, calculating the subjective score by inputting the objective parameters to obtain a sound quality evaluation system of the road noise, and if NO, rejecting the data collected this time. Bark1 and total loudness parameters are extracted from the road noise, subjective scores of corresponding samples can be obtained through a calculation formula of subjective and objective scores, and a standard system for evaluating the road noise is formed.

Description

technical field [0001] The invention belongs to the field of noise processing technology improvement, and in particular relates to a method for evaluating road noise based on masking effect. Background technique [0002] With the improvement of people's living standards and the significant increase in the penetration rate of public vehicles, consumers have higher and higher requirements for NVH (Noise Vibration and Harshness, vibration, noise and harshness). The state where customers have the most contact with the vehicle during the use of the vehicle, and the noise level in the process is one of the matters that customers are most concerned about. [0003] Therefore, in the process of vehicle NVH development, road noise test is an indispensable link to verify the NVH performance of the vehicle. The analysis and judgment of vehicle road noise test data in the current technology mainly relies on the experience of NVH engineers to judge and evaluate the noise level of the veh...

AI Technical Summary

Problems solved by technology

[0006] In addition, when the frequency distribution of low-frequency noise (such as 0-100Hz) is different but the A-weighted sound pressure level is the same, the human ear feels different, and it is impossible to unify subjective and objective evaluations.

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