Microphone array sound source positioning method and apparatus

Active Publication Date: 2017-12-01
GOERTEK INC
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the direction angle of sound source localization deviates from the actual sound source direction, the effectiveness of subsequent speech processing will be greatly reduced

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 sound source positioning method and apparatus
  • Microphone array sound source positioning method and apparatus
  • Microphone array sound source positioning method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The realization carrier of the sound source localization algorithm is a microphone array composed of multiple microphones. The most common form of microphone array is that four (or more) microphones are evenly distributed in a circle. The current microphone array and most sound source localization technologies require that the microphone array be placed horizontally during hardware design, because when all the microphones in the microphone array are on the same horizontal plane, the azimuth results obtained by the sound source localization algorithm are different from actual ones. The position of the sound source can ensure the smallest error.

[0024] The design concept of the present invention lies in the problem that in the prior art, the sound source localization technology based on the microphone array requires the microphones of the microphone array to be located on the same horizontal plane, which cannot meet the requirements of some products. A sound source positi...

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 microphone array sound source positioning method and apparatus. The method includes: determining a horizontal axis around which a microphone array rotates during rotation as a reference axis; calculating a sound emitted by a sound source acquired by the microphone array, and obtaining a first sound source estimated value of a sound source orientation in a three-dimensional space; obtaining an inclination angle of a rotation axis of the microphone array during rotation relative to a horizontal plane which the reference axis belongs to; and obtaining a second sound source estimated value on a horizontal plane corresponding to the first sound source estimated value through calculation according to the first sound source estimated value and the inclination angle, and regarding the second sound source estimated value as a determined sound source orientation. According to the technical scheme of the method and apparatus, during inclination of the microphone array, the sound source orientation in the horizontal plane corresponding to the sound source orientation in the three-dimensional space is calculated, the error between the sound source located during inclination of the microphone array and the practical sound source orientation is reduced, and the precision of sound source positioning and the performance of audio processing are enhanced.

Description

Technical field [0001] The invention relates to the technical field of acoustic signal processing, in particular to a method and device for locating a microphone array sound source. Background technique [0002] With the development of electronic information technology and acoustic technology, as well as the development of intelligent hardware products such as robots, sound source localization technology based on microphone arrays is increasingly being applied to products such as robots. A microphone array is an array formed by a set of microphones located at different positions in the space, arranged in a certain shape, and used to collect and process the spatial sound signals. Sound source localization technology is the foundation of other sound source processing technologies. Only when the position and horizontal angle of the sound source are judged through the sound source localization technology, can subsequent beamforming, sound source tracking, voice noise reduction, echo ...

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
CPCG01S5/22G01S3/803H04R3/005H04R2430/23G01S5/20H04R1/406H04R2201/401
Inventor 朱剑张向东罗志平严栋陈茁
Owner GOERTEK INC
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