Vehicle sound insulation performance analysis method, system and medium

Abstract

The invention discloses a vehicle sound insulation performance analysis method, system and medium, and relates to the technical field of vehicle sound insulation detection, comprising the following steps: collecting a sound source imaging map and a sound source spectrum map of a vehicle to be tested in a preset state; collecting the The sound insulation contribution of the vehicle to be tested; obtain the weak position of the sound insulation of the vehicle to be tested according to the sound source imaging map and the sound source spectrum; obtain the mapping table of the sound insulation contribution and the sound insulation requirement; according to the sound insulation contribution Quantities and the mapping table to obtain the sound insulation requirement level of the part. The present invention is carried out in a noise-absorbing environment, which avoids most of the sounds caused by the influence of the vehicle glass from being injected into the vehicle through the glass. The package analyzes the contribution of sound insulation, with high work efficiency and good detection accuracy, which realizes lightweight products, low-cost research and development, and ultimately shortens product development cycles and reduces research and development risks.

Description

technical field [0001] The invention relates to the technical field of vehicle sound insulation detection, in particular to a vehicle sound insulation performance analysis method, system and medium. Background technique [0002] At present, in the development process of automobile vibration and noise, the sound insulation test of the whole vehicle is generally carried out to evaluate the level of the acoustic package of the whole vehicle; the traditional sound insulation test method of the whole vehicle is the sound insulation test based on NR, which is carried out in the reverberation room , used to evaluate the overall sound insulation performance of the vehicle. However, due to the influence of the material of the glass, most of the sound can be transmitted through the glass, so the difference in the sound insulation measured by different prototypes is not large, and it is impossible to accurately evaluate the sound insulation of each vehicle. Sound insulation level; at p...

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Problems solved by technology

[0002] At present, in the development process of automobile vibration and noise, the sound insulation test of the whole vehicle is generally carried out to evaluate the level of the acoustic package of the whole vehicle; the traditional sound insulation test method of the whole vehicle is the sound insulation test based on NR, which is carried out in the reverberation room , used to evaluate the overall sound insulation performance of the vehicle. However, due to the influence of the material of the glass, most of the sound can be transmitted through the glass, so the difference in the sound insulation measured by different prototypes is not large, and it is impossible to accurately evaluate the sound insulation of each vehicle. Sound insulation level; at present, the sound insulation test based on the acoustic transfer letter is widely used, which can analyze the sound insulation ability of each plate and be used for setting performance goals in the development of the acoustic package, but there are fewer divided plates, and each plate is specific and weak The parts cannot be captured, and the contribution to the important acoustic package of the car body cannot be analyzed

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