Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Acoustic coupling method of coupling acoustic fields

A sound field and acoustic technology, applied in the field of acoustic coupling of coupled sound fields, can solve problems such as limitations, and achieve the effects of fast prediction results, simple processing procedures, and high output results

Active Publication Date: 2015-09-16
HARBIN ENG UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the assumption that sound travels along a straight line in geometrical acoustics limits the application of this method to high-frequency calculations and analysis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Acoustic coupling method of coupling acoustic fields
  • Acoustic coupling method of coupling acoustic fields
  • Acoustic coupling method of coupling acoustic fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] The invention discloses an acoustic coupling technology method that can be used to solve the difficult problem of analyzing the acoustic characteristics of the coupled sound field. The specific steps are: extracting the shape information and boundary condition information of the sound field space; coupling two adjacent sound fields through the coupling interface, and extracting the corresponding coupling information; obtaining the characteristic equation of the coupled sound field through the energy variation method, and establishing a solver based on matlab; Finally, the predicted acoustic characteristic information such as the natural frequency and mode of the coupled sound field is output. The method of the invention does not need to put forward additional assumptions on the coupling structure, has clear physical meaning, simple processing process, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an acoustic coupling method of coupling acoustic fields. The method comprises setting a coupling interface impedance of two coupling acoustic fields, selecting a sound pressure function of each acoustic field, determining a Lagrange functional of each acoustic field according to a variational method, determining coupling energy of the two coupling acoustic fields, determining a coupling rigidity matrix of a coupling acoustic space coupling interface and a rigidity matrix corresponding to each acoustic field and a quality matrix corresponding to each acoustic matrix, performing combinations according to the rigidity matrixes of the two acoustic fields, the quality matrixes of the two acoustic fields and the coupling rigidity matrix, determining a coupling acoustic field characteristic equation, and obtaining coupling acoustic field acoustic forecast information. The acoustic coupling method has the advantages of rapid convergence of a forecast information and less resources needed by calculation.

Description

technical field [0001] The invention belongs to an acoustic coupling analysis method in the field of acoustics, and in particular relates to an acoustic coupling method for coupling a sound field, which is used to solve the problem of the acoustic characteristics of a coupled sound field. Background technique [0002] Coupling space refers to a space form composed of multiple independent acoustic systems connected through openings, which is commonly found in general buildings, concert halls and opera houses. Therefore, the research on the acoustic characteristics of coupled spaces has important engineering background and research significance. In general, research methods on coupled spatial acoustic fields are divided into two categories, namely geometrical acoustics and wave acoustics. The former includes statistical acoustic model, scattering equation model and computational geometric acoustics, while the latter mainly refers to the mode superposition method. However, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 靳国永陈跃华马相龙石双霞张春雨刘志刚
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com