Unlock instant, AI-driven research and patent intelligence for your innovation.

Sound source positioning method and device

A sound source localization and sound source location technology, applied in the field of localization, can solve the problems of sound source signal time delay error, inaccurate sound source localization, etc., and achieve the effects of improving accuracy, avoiding adverse effects, and improving accuracy.

Inactive Publication Date: 2017-11-07
GOERTEK INC
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a large error in the time delay difference estimated based on the correlation of each sound source signal, which in turn leads to the problem of inaccurate sound source localization

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
  • Sound source positioning method and device
  • Sound source positioning method and device
  • Sound source positioning method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, Embodiment 1 of a sound source localization method provided by an embodiment of the present invention includes the following steps:

[0032] S101: Obtain the first sound source signal and the second sound source signal received by the microphone array, the first sound source signal is received by the reference microphone in the microphone array, and the second sound source signal is received by M non-reference microphones in the microphone array Any one of M channels of second sound source signals, where M is greater than or equal to 5.

[0033] In the embodiment of the present invention, optionally, multiple microphones may be arranged at different positions in space to form a microphone array, or, optionally, multiple microphones may be installed in an electronic device to form a microphone array. In the application of sound source localization, multiple microphones can receive signals emitted by the same sound source, and then analyze the ...

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 embodiment of the present invention provides a sound source positioning method and device. The sound source positioning method comprises the steps of obtaining the first sound source signals and the second sound source signals received by a microphone array; determining the envelop functions respectively corresponding to the first and second sound source signals; according to the envelop functions respectively corresponding to the first and second sound source signals, determining the increasing characteristic functions respectively corresponding to the first and second sound source signals; according to the correlation between the increasing characteristic functions respectively corresponding to the first and second sound source signals, determining the signal reception time delay differences of the first and second sound source signals; according to the signal reception time delay differences of the first sound source signals and the M second sound source signals, and the position relation of the M non-reference microphones and the reference microphones, determining the position of a sound source. By implementing the embodiment of the scheme, the sound source positioning accuracy can be improved.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a sound source localization method and device. Background technique [0002] Sound source localization is a technology that obtains the position of the sound source through the sound waves emitted by the sound source. The sound source localization technology is helpful for the development of machine intelligence. [0003] The traditional sound source localization technology uses the microphone array to receive the sound source signal, and estimates the time delay difference between the microphones to receive the sound source signal based on the correlation between the sound source signals received by each microphone; then calculates the sound source according to the time delay difference and the sound velocity The distance difference between different microphones, and then according to each distance difference and the distance between each microphone and the sound sou...

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 陈茁张向东朱剑刘文文闫秀英马立刘金玉
Owner GOERTEK INC