Low-frequency broadband sound absorber inverse design method based on GP-BM

Abstract

The invention discloses a low-frequency broadband sound absorber inverse design method based on GP-BM, and the method comprises the steps of firstly building a to-be-optimized sound absorber model, and determining the m-dimensional characteristic parameters of the to-be-optimized sound absorber model and a to-be-optimized acoustic performance target; randomly generating q groups of characteristic parameters, calculating the acoustic performance of the characteristic parameters by using a finite element method, and constructing an n * (m + 1)-dimensional initial data set; then predicting a next group of characteristic parameters by using a UCB function based on GP-BM; finally, judging whether the predicted characteristic parameters meet the acoustic target or not, if not, expanding the predicted characteristic parameters to a data set, and performing cyclic prediction; and if so, outputting the characteristic parameter. The invention does not depend on a theoretical model and a large sample data set of the sound absorber, and the optimal acoustic performance target is obtained by performing probability description on the prediction process; according to the invention, the acoustic target can be quickly optimized by means of the small sample data set, the characteristic parameters of the low-frequency broadband sound absorber are efficiently and inversely designed, and the method has important application value in the fields of noise control, architectural acoustics and the like.

Description

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AI Technical Summary

Benefits of technology

This technology allows for quick optimization of an audio device's characteristics without relying solely upon its mathematical models or assumptions about how it works at lower frequencies than usual. It also uses smaller samples from different sources instead of continuously updating all possible configurations that are used during designing process.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving the acoupling between two different materials without requiring significant calculations or expensive equipment. This involves developing a new way to make it easier to create effective noise reduction devices called absorbents.

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