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Adjustable response time-frequency spectrum sound source positioning method and system

A technology of sound source localization and time spectrum, applied in localization, radio wave measurement systems, instruments, etc., can solve the problems of low positioning accuracy and slow positioning speed.

Active Publication Date: 2021-04-16
ZHONGBEI UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for locating sound source with frequency spectrum with adjustable response, so as to overcome the technical defects of low positioning accuracy and slow positioning speed in existing positioning methods, and improve positioning accuracy and positioning speed

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  • Adjustable response time-frequency spectrum sound source positioning method and system
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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] The purpose of the present invention is to provide a frequency spectrum sound source location method and system with adjustable response time, so as to overcome the technical defects of low positioning accuracy and slow positioning speed in the existing positioning methods, and improve the positioning accuracy and positioning speed.

[0046] In order to make the above objects, features and advantages of the present invention more comprehens...

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Abstract

The invention provides an adjustable response time-frequency spectrum sound source positioning method and system, and the method comprises the steps: carrying out the time-frequency conversion of a cross correlation coefficient, obtaining the positioning space energy distribution containing signal frequency information through employing a delay summation beam forming principle, carrying out the constraint maximum likelihood estimation, and constructing a positioning feature matrix; and further adopting a clustering and weighting fusion mode to improve the positioning precision and speed, and therefore, the technical defect of inaccurate positioning caused by no consideration of frequency information is overcome.

Description

technical field [0001] The invention relates to the technical field of sound source localization, in particular to a frequency spectrum sound source localization method and system with adjustable response time. Background technique [0002] Sound source localization is widely used in many fields. The current sound source localization methods can be divided into two categories in terms of localization principles. One is a two-step localization method based on arrival / time difference estimation, and the other is a one-step localization method based on beamforming. positioning method. The positioning accuracy of the two-step positioning method is limited by the time difference estimation accuracy and the positioning algorithm performance. High-precision time difference / arrival time difference estimation requires high-quality data, so the two-step positioning method has poor anti-interference ability. The one-step positioning method can make full use of the time, energy and fr...

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Application Information

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IPC IPC(8): G01S5/18G06K9/62
Inventor 聂鹏飞贾彩琴刘宾王黎明韩焱余尚江陈晋央周会娟
Owner ZHONGBEI UNIV
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