Noise online diagnosis and sound quality evaluating method and system based on wireless-connected and portable client

Abstract

The invention provides a noise online diagnosis and sound quality evaluating method and a system based on a wireless-connected and portable client. The patent of the invention is provided on the basisof testing and analyzing noise in a vehicle. The method comprises the following steps: firstly developing an in-vehicle wireless-connected system, building a real-time information flow related to noise diagnosis evaluation, transmitting to a terminal and acquiring a signal feature of an energy entropy; based on the portable client, extracting a sound quality objective parameter and building an adaptive neural network compensation model, self-defining a neural network structure, enabling an error compensation model to have better operational precision, and guaranteeing adaptability and stability of each working condition of the model at the same time, wherein the model uses a software technology to replace a huge hardware system of a professional testing system (an artificial head) for compensation, and is low in cost, and convenient and rapid to use; and finally, combining online and offline sound quality subjective and objective evaluation data based on targeted preference, and building a whole system and a standard of the in-vehicle sound quality evaluation by using a fuzzy comprehensive evaluating method.

Description

technical field [0001] The patent of the present invention relates to the field of sound quality of noise testing technology, and specifically relates to a method and system for online noise diagnosis and sound quality evaluation, which can diagnose the noise level in the car online and evaluate the sound quality. Background technique [0002] With the development of industry in modern society, new technologies, new means and new methods in the automobile industry are constantly being introduced. The noise inside the car is an important factor that affects the comfort of drivers and passengers, the degree of hearing impairment, the intelligibility of speech, and the ability to identify various sound signals outside the car. The acoustic quality of the car interior has become an important decision factor that affects customers' purchase of models. How to comprehensively obtain the evaluation index of vehicle interior noise is a research hotspot at this stage. [0003] The c...

AI Technical Summary

Problems solved by technology

The research on remote automotive diagnosis and the development of corresponding technologies are mainly focused on the detection of specific components, the construction of the overall architecture, and the research on diagnostic methods. There is a lack of mature cases of using comprehensive technologies to build a diagnostic platform and realize remote diagnosis.

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