Fractal-feature-based intelligent wheelchair voice identification control method and system

A fractal feature, speech recognition technology, applied in speech recognition, speech analysis, instruments, etc., can solve the problem that the performance of speech recognition technology is difficult to further improve.

Inactive Publication Date: 2011-09-14
CHONGQING UNIV OF POSTS & TELECOMM
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the speech signal is a complex nonlinear process, it is difficult to further improve the

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
  • Fractal-feature-based intelligent wheelchair voice identification control method and system
  • Fractal-feature-based intelligent wheelchair voice identification control method and system
  • Fractal-feature-based intelligent wheelchair voice identification control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0087] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0088] image 3 It is a flowchart of an embodiment of the present invention; the intelligent wheelchair voice recognition control method based on fractal features provided by the present invention comprises the following steps:

[0089] S1: Voice signal command word input;

[0090] S2: Preprocessing the voice signal;

[0091] S3: extracting the characteristic parameters of the preprocessed speech signal;

[0092] S4: Pattern matching the characteristic parameters with the templates of the template library;

[0093] S5: Select the template with the highest matching similarity as the recognition result;

[0094] S6: converting the recognition result into a motion comm...

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 fractal-feature-based intelligent wheelchair voice identification control method, and relates to a voice identification method. The method comprises the following steps of: first, inputting a voice signal; then, performing preprocessing and feature parameter extraction; and finally, performing matching judgment with a template in a template library to acquire a command to control an intelligent wheelchair. A mixed feature parameter obtained by organically combining a fractal feature parameter of the voice signal and a conventional Mel frequency ceptral coefficient (MFCC) feature parameter improves the identification rate of a system, is used for the voice identification in a voice control system, realizes the precise control of the intelligent wheelchair, and fulfils the aim of voice interaction between a user and the wheelchair; and simultaneously, the mixed feature parameter extraction method is also suitable for other voice identification systems. In addition, the invention also discloses a fractal-feature-based intelligent wheelchair voice identification control system. The method comprises a voice signal input module, a preprocessing module, a feature parameter extraction module, a matching module, a judgment module, a command conversion module and a control module.

Description

technical field [0001] The invention relates to the field of computer voice recognition control, in particular to a fractal feature-based voice recognition intelligent wheelchair control method. Background technique [0002] With the development of society and the improvement of human civilization, the service needs of people, especially the elderly and the disabled, will increase day by day. They increasingly need to use modern high-tech to improve their quality of life and freedom of life. No matter in the world or in our country, the process of population aging is accelerating. In addition, due to various traffic accidents, natural and man-made disasters and various diseases, tens of thousands of people lose one or more abilities (such as walking, hands-on, etc.) every year. ability, etc.), this social reality has promoted the application of intelligent service robots in helping the elderly and the disabled. Therefore, as an important research field in the series of prod...

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
IPC IPC(8): G10L15/02G10L15/04G10L15/28G10L17/22
Inventor 张毅罗元李敏蔡军谢颖林海波黄璜李艳花
Owner CHONGQING UNIV OF POSTS & TELECOMM
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