Multi-sound source localization method based on distributed microphone arrays in reverberation room

A technology of microphone array and positioning method, which is applied in the field of signal processing and can solve the problem of large number of microphones

Inactive Publication Date: 2018-11-13
DALIAN UNIV
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the number of microphones is greater than the number of sound sources in existing multi-sound source positioning, the present invention proposes the following technical solutions:

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
  • Multi-sound source localization method based on distributed microphone arrays in reverberation room
  • Multi-sound source localization method based on distributed microphone arrays in reverberation room
  • Multi-sound source localization method based on distributed microphone arrays in reverberation room

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] In order to make the technical content, features, etc. of the present invention more obvious and understandable, the following combination figure 1 The implementation steps of the present invention are described. Briefly, the multi-sound source positioning method of the distributed microphone array in the reverberation room of the present invention can be implemented by software, and mainly involves the following steps:

[0051] (1) First determine the size of the room, that is, obtain the length, width, and height values ​​of the room respectively, and at the same time determine the position of the microphone array, all in meters.

[0052] (2) Construct the room impulse response and generate the compressed observation matrix.

[0053] (3) The relationship between the multi-sound source signal, the compressed observation matrix and the microphone observation data is shown by a set of underdetermined linear equations, which is the reverberation multi-sound source localiz...

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 a multi-sound source localization method based on distributed microphone arrays in a reverberation room, and mainly solves the problem that the number of microphone array soundsources in the reverberant room is always larger than that of microphones. The method is mainly implemented by steps as follows: (1) constructing a compressed sensing localization algorithm accordingto characteristics of reverberation multi-sound source signal propagation and signal reception of the microphones; (2) constructing a compressed observation matrix with an Image method on the premisethat size of the room and positions of the microphones are known; (3) performing solution with a multi-sound source localization algorithm based on the microphone arrays with an undetermined number in the reverberation room by block sparsity optimization to obtain positions and number of the multiple sound sources in the space. Multi-sound source localization based on the distributed microphone arrays with an undetermined number in the reverberation room is achieved, the method is not constrained by formation, and compared with current mass arrays with practical value, the array size is greatly reduced, so that the hardware cost is reduced, and the computational burden is also reduced.

Description

technical field [0001] The invention belongs to the field of signal processing, and further relates to a multi-sound source localization method and system based on compressive sensing in a reverberation room with a distributed underdetermined number of microphone arrays. Background technique [0002] With the rapid development of the communication industry, array signal processing has become a research hotspot. Since the 1990s, sound source localization technology based on microphone arrays has made great progress and development in various fields. For example, in the military field, sound source localization technology can be used to determine the position of snipers and estimate the firing position of artillery, etc.; in industrial applications, the microphone array sound source localization technology is used to locate the failure of mechanical equipment; The sound source localization technology can play a good role in compensating for the dead angle and poor vision in t...

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): G01S5/22
CPCG01S5/22
Inventor 张奕
Owner DALIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap