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

Microphone Array Speech Enhancement Method Based on Cooperative Nonlinear Adaptive Filtering

A technology of microphone array and self-adaptive filtering, applied in voice analysis, instruments, etc., can solve problems such as noise reduction of voice signals

Active Publication Date: 2022-02-01
NANJING UNIV OF INFORMATION SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a microphone array speech enhancement method based on cooperative nonlinear adaptive filtering technology to solve the problem of noise reduction of speech signals

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
  • Microphone Array Speech Enhancement Method Based on Cooperative Nonlinear Adaptive Filtering
  • Microphone Array Speech Enhancement Method Based on Cooperative Nonlinear Adaptive Filtering
  • Microphone Array Speech Enhancement Method Based on Cooperative Nonlinear Adaptive Filtering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

[0045] The microphone array speech enhancement method based on cooperative non-linear adaptive filtering provided by the present invention, the enhancement process is as follows figure 2 As shown, it specifically includes the following steps:

[0046] (1) Input the noisy speech signal into the microphone array as X(n)=A(θ)S(n)+N(n), wherein the noisy speech signal X(n)=A(θ)S(n) θ in +N(n) is the incoming wave direction of the target signal, A(θ) is the array flow pattern of the target signal, S(n) is the target voice signal, N(n) is directional interference noise or random noise ; The microphone array performs delay estimation and delay compensation to the received noisy speech signal, so that the signals in each microphone channel are consistent in time, and the bands of each microphone channel after delay estimation and delay compensation a...

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 relates to a microphone array speech enhancement method based on cooperative nonlinear adaptive filtering, and the specific steps are: (1) inputting a noisy speech signal into a microphone array, and the microphone array performs time delay estimation and time delay on the received noisy speech signal Compensate to obtain the aligned noisy speech signal; (2) divide the aligned noisy speech signal into two parts for processing, one part uses a linear filter to process through the LMP adaptive algorithm; (3) the other part is processed by nonlinear filtering (4) The voice output of the microphone array depends on the voice output of the linear filter and the nonlinear filter respectively. The microphone array voice enhancement method based on the cooperative nonlinear adaptive filtering technology proposed by the present invention, through the combination of the linear filter and the nonlinear filter, coordinately adjusts the output of the voice signal, thereby filtering out the noise interference signal to the greatest extent, Realize the adaptive speech enhancement for the speech signal.

Description

technical field [0001] The invention relates to the technical fields of electronic communication and information engineering, in particular to a microphone array speech enhancement method based on cooperative non-linear adaptive filtering technology. Background technique [0002] Voice is an important way for human beings to communicate information and express emotions. It is the most direct and effective way for people to communicate with each other. It is also the main tool for control and communication between humans and machines. The 21st century is the era of information technology. With the popularization of artificial intelligence, remote voice technology is more and more used in the needs of human life. Coupled with the rapid development of the mobile phone smart industry, it also promotes the progress of voice enhancement technology. Speech signal processing has high requirements on the quality of the speech signal. However, the picked-up speech signal contains noi...

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 Patents(China)
IPC IPC(8): G10L21/0208G10L21/0216
CPCG10L21/0208G10L21/0216G10L2021/02166
Inventor 赵益波杨蕾严涛陆浩志
Owner NANJING UNIV OF INFORMATION SCI & TECH
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