Objective quantization method for subjective evaluation of electromobile steady noise

Abstract

The invention discloses an objective quantization method for the subjective evaluation of electromobile steady noise. A psychoacoustic parameter is adopted to serve as the objective evaluation parameter of electromobile idle speed noise so as to solve the problem that a sound pressure level can not fundamentally a noise signal. In the method, people of different genders, different age groups, different driving years and different specialization levels are adopted for the subjective evaluation people of the electromobile idle speed noise so as to effectively solve the problem that subjective evaluation people can not represent market consumers. The subjective evaluation way of the electromobile idle speed noise is subjected to subjective scoring under a real vehicle state, and therefore, the problem that real vehicle environment can not be completely simulated when a sound sample playback way is used for scoring is solved. By use of the method, a situation that the subjective and objective evaluation of noise in the vehicle is inconsistent in an electromobile research and development process can be solved, a reference is formulated for NVH target decomposition in electromobile development, and an evaluation thought is provided for improving the sound quality of the electromobile.

Description

technical field [0001] The invention relates to a quantification method, in particular to an objective quantification method for subjective evaluation of electric vehicle steady-state noise. Background technique [0002] With the increasing pressure of environmental protection and national support, the development of the electric vehicle industry has grown significantly. At the same time, with the development of society, consumers have also put forward higher and higher requirements for the comfort of cars. Although the sound pressure level of the interior noise of electric vehicles is significantly lower than that of traditional vehicles, the noise components of electric vehicles contain more electromagnetic noise and high-order noise, which makes the noise frequency of electric vehicles significantly higher, giving people a sense of An uncomfortable feeling. This also puts forward higher NVH performance requirements for electric vehicle manufacturers. However, the human...

AI Technical Summary

Problems solved by technology

Due to the complexity of people's subjective feelings, there will be inconsistencies between the subjective and objective results when evaluating the noise performance in the car, especially the idling noise sound pressure level of electric vehicles is very low, but due to high Very bad, so the subjective feeling of electric vehicle idling noise is quite different from the sound pressure level

In addition, subjective evaluation is a time-consuming and labor-intensive process, which not only requires a large number of subjective evaluators, but also requires certain professional level of evaluators

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