Sound quality adaptive design method and device based on virtual bridge

Abstract

The invention belongs to the technical field of automobile sound quality, and discloses a sound quality adaptive design method and device based on a virtual bridge. The invention includes: when the sound quality performance of a sound sample is scored, an evaluator is organized to control the driving of a simulated vehicle under a given working condition by using a virtual bridge frame, reproducing a virtual driving environment through a visual reproduction module and an auditory reproduction module in the driving process, and playing the sound sample collected in advance in the virtual driving environment; and establishing a subjective evaluation prediction model based on the relationship between the objective indexes of the sound samples and the subjective scoring results of the sound samples, and adaptively modulating the sound samples of which the sound quality is averagely distributed at each evaluation grade based on the subjective evaluation prediction model. The device comprises a virtual bridge frame, a visual reproduction module, an auditory reproduction module, an evaluation module and a data processing module. The problems that in subjective evaluation, real vehicle evaluation is low in efficiency and high in cost, listening room evaluation does not have universality, and sound quality design is not targeted are solved.

Description

technical field [0001] The invention belongs to the technical field of automobile sound quality, and more specifically relates to a sound quality self-adaptive design method and device based on a virtual driving bench. Background technique [0002] At present, the evaluation methods of automobile sound quality are divided into subjective evaluation and objective evaluation. Objective evaluation is based on the physical parameters of sound and psychological objective parameters, and evaluates the quality of sound by calculating loudness, sharpness, roughness, linearity, fluctuation, etc. The goal is to select objective indicators instead of subjective evaluation tests Obtain an estimated subjective feeling. Subjective evaluation takes the evaluator's feelings as the main body, and let the evaluators feel the car sound through playback in the listening room environment or real car environment. [0003] There is a difference between the subjective evaluation of the listening ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a sound quality self-adaptive design method and device based on a virtual driving platform, which solves the problems of low efficiency and high cost of real vehicle evaluation in subjective evaluation in the prior art, and the lack of universality and sound quality in listening room evaluation. Untargeted problems in quality design

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