Objective quantitative evaluation method for idle noise in automobile

A quantitative evaluation and vehicle technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems that the subjective evaluation of vehicle noise cannot correspond to objective parameters, and the subjective evaluation of vehicle noise can achieve effective testing and Effectiveness of evaluation methods, low cost, and clear thinking

Inactive Publication Date: 2018-10-16
BRILLIANCE AUTO
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an objective quantitative evaluation method for idling noise in automobiles, solve the problem that

Method used

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  • Objective quantitative evaluation method for idle noise in automobile
  • Objective quantitative evaluation method for idle noise in automobile
  • Objective quantitative evaluation method for idle noise in automobile

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Embodiment Construction

[0022] As shown in the figure, the present invention discloses an objective quantitative evaluation method for idling noise inside a car, comprising the following steps:

[0023] S1. Collection of objective parameters

[0024] S1.1. Park the vehicle at idle speed on the site to be tested;

[0025] S1.2. Arrange the acoustic signal acquisition device to collect the data of several vehicles with different idling noise levels; and calculate the objective parameters of the collected idling noise signals of each vehicle;

[0026] S2. Processing of subjective parameters

[0027] S2.1. Select a number of subjective evaluators to replay and evaluate the collected sound signal samples;

[0028] S2.2, and perform statistical processing on the subjective evaluation results according to the following formula:

[0029]

[0030] In the formula: for any score value, is the score value after normalization, The minimum value scored by all valid evaluators in the same acoustic envir...

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Abstract

The invention discloses an objective quantitative evaluation method for idle noise in an automobile. The objective quantitative evaluation method comprises the steps of acquiring objective parametersand processing of subjective parameters, carrying out correlation analysis on the subjective evaluation result and the objective parameters, establishing a correlation model by using a multi-element linear regression, and obtaining an objective quantitative mathematical model of the subjective evaluation of idle speed noises. According to the method, the subjective evaluation condition of the idling noise performance of the automobile can be obtained. The objective quantitative evaluation method is a comprehensive, direct, rapid and effective testing and evaluating method. The test method applied by the method is simple, clear in idea and very high in universality, can be suitable for testing and evaluating the idle speed noise performance of various types of vehicles, and is low in cost.

Description

technical field [0001] The invention relates to the field of performance testing and evaluation of automobile interior noise, in particular to an objective quantitative evaluation method for automobile interior idling noise. Background technique [0002] As consumers have higher and higher requirements for car ride comfort, car interior acoustic comfort has become an important indicator for consumers to evaluate vehicle performance. The car performance that consumers experience most in the process of purchasing a car is the experience of idling noise inside the car. Therefore, the research stage of each vehicle model puts forward higher and higher requirements on the idling noise of the vehicle. [0003] However, people's subjective perception of sound is very complicated, and the quality of vehicle idling noise cannot be judged by simple sound pressure level. In the early and late stage of vehicle NVH performance development, how to correctly evaluate the vehicle interior...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 蓸景攀王晖李静波王昌旭
Owner BRILLIANCE AUTO
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