Time domain dynamic characteristic analysis-based intra-vehicle sound quality prediction method

Abstract

The invention belongs to the technical field of sound quality prediction in vehicle vibration and noise analysis and control and relates to a time domain dynamic characteristic analysis-based intra-vehicle sound quality prediction method. With the method adopted, the problem of incapability of current intra-vehicle sound quality analysis researches to describe the time domain dynamic characteristics of intra-vehicle sound environment in vehicle regular driving can be solved. The method includes the following steps that: 1, a sound acquisition device is utilized to acquire an intra-vehicle sound signal sample; 2, framing and windowing processing is performed on the intra-vehicle sound signal sample; 3, a subjective evaluation test is performed on the intra-vehicle sound signal sample; 4, sound quality objective psychological acoustic parameters are calculated; 5, the time domain dynamic characteristic indexes of the objective psychological acoustic parameters are calculated, wherein the indexes include the variances of the objective psychological acoustic parameters and the ranges of the objective psychological acoustic parameters; 6, an intra-vehicle sound quality objective comprehensive evaluation model is established; 7, the output value of the sound quality objective comprehensive evaluation model is compared with a subjective evaluation value; and 8, a test sample is utilized to verify the model.

Description

technical field [0001] The invention belongs to the technical field of sound quality prediction in automobile vibration and noise analysis and control, and relates to a method for predicting sound quality inside a car based on time-domain dynamic characteristic analysis. More specifically, the present invention is an in-vehicle sound quality prediction method based on time-domain dynamic characteristic analysis, which is applicable to the prediction of sound quality in an unsteady-state in-vehicle sound environment caused by various factors during normal driving of the vehicle. . Background technique [0002] With the rapid development of the automobile industry, people have higher and higher requirements for automobile comfort, and the role of interior sound quality in evaluating the overall quality of automobiles is becoming more and more important. The quality of the sound inside the car reflects people's perception of the sound environment inside the car, and is the com...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem existing in the prior art that the time-domain dynamic characteristics of the sound environment in the vehicle cannot be described when the vehicle is normally running, and to provide a method for predicting the sound quality in the vehicle based on the analysis of the time-domain dynamic characteristics

Images