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Robust Sound Source Localization System and Method

A sound source location and sound velocity technology, applied in the field of positioning, can solve problems such as large positioning errors, and achieve the effect of improving universality

Active Publication Date: 2022-05-24
ARMY ENG UNIV OF PLA
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It effectively avoids the errors caused by the time difference positioning method under the sound source positioning in the prior art, and the defect that a large positioning error will be generated in an environment where the microphone has a large noise

Method used

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  • Robust Sound Source Localization System and Method
  • Robust Sound Source Localization System and Method
  • Robust Sound Source Localization System and Method

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Embodiment Construction

[0056] For the problem of time difference localization in the existing sound source localization, a valuable idea is to consider how to improve the convergence performance of the localization algorithm in the case of microphones with large errors on the basis of maintaining the advantages of the Newton iteration method.

[0057] On the premise of linearizing and iteratively solving the nonlinear equation system, the present invention adaptively updates the weights in the weighted least squares, dynamically modifies the weights of the equations, and minimizes the influence of the equations where the microphones with potential errors are located. . First, the initial iteration is determined according to the coarse positioning results of multiple sets of three microphones, so that the global optimal solution can be found with a high probability; secondly, a dynamic weight correction technology is introduced into the weighted least squares, and each iteration gradually reduces the ...

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Abstract

A robust sound source localization system and method thereof, comprising the following steps: Step 1: Establish time difference equations; Step 2: Time difference τ ij Estimation of ; Step 3: Processing method of sound velocity; Step 4: Regularized Newton method to solve the equation; Step 5: Initial solution setting; Step 6: Weight initialization and adaptive update. Combining with other structures or methods effectively avoids the disadvantages of errors caused by the time difference positioning method under sound source positioning in the prior art, and relatively large positioning errors in an environment where the microphone has a large noise.

Description

technical field [0001] The invention relates to the technical field of localization and also to the technical field of sound sources, in particular to a robust sound source localization system and method thereof, in particular to a robust sound source localization system and method based on adaptive weighted least squares. Background technique [0002] Artificial intelligence has received more and more attention in the computer field. And it has been applied in robots, economic and political decision-making, control systems, and simulation systems. In recent years, with the development of artificial intelligence technology, sound source localization technology has been applied in more and more scenarios. And because of its advantages of good concealment, high positioning accuracy and low cost, it occupies an important position in the fields of intelligent voice, sonar and battlefield monitoring. In general, solutions for sound source localization include methods such as be...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 王艺敏苏洋徐智勇周华李建华郑吉林吴传信张宝富
Owner ARMY ENG UNIV OF PLA