Method for evaluating road noise based on masking effect

A technology of masking effect and subjective evaluation, which is applied in vehicle testing, data processing applications, and testing of machine/structural components, etc. It can solve the problems of different human ears and inability to perform subjective and objective evaluations.

Pending Publication Date: 2021-10-29
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Abstract
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  • Application Information

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 ...

Method used

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  • Method for evaluating road noise based on masking effect
  • Method for evaluating road noise based on masking effect
  • Method for evaluating road noise based on masking effect

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Embodiment Construction

[0025] like Figure 1-3 As shown, the flow chart of the method for evaluating low-frequency road noise with the Bark1 characteristic loudness of the Zwicker loudness and the total loudness provided by the present invention is described in detail as follows:

[0026] Step S1, data collection is performed on the whistling conditions of several different types of vehicles; first, data collection is performed on the whistling conditions of various types of vehicles, and at the same time, multiple vehicles for each type of vehicles are also selected for whistling work. The more data of each type collected, the more accurate the later evaluation will be.

[0027] Step S2, sorting out the howling working condition data collected by the real vehicle and adding a plurality of virtual samples; sorting out the whistling working condition data collected by the real vehicle in a way of editing, and editing the irrelevant data information at the head and tail. Delete, and perform noise red...

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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...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01H17/00G06Q10/06
CPCG01M17/007G01H17/00G06Q10/0639
Inventor 常光宝杨丽刘杰昌韦进镰罗德洋梁卓梁文昌
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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