Method for obtaining motion acoustic field video based on random microphone array and binocular vision

A technology of microphone array and binocular vision, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., and can solve problems such as the limitation of the accuracy of the sound field and the influence of the popularization and application of measurement methods.
CN101414000BInactive Publication Date: 2011-04-27TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2011-04-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for acquiring motion sound field video based on a random microphone array and binocular vision, and belongs to the technical field of noise analysis and control. Firstly, sound filed information is obtained by the random microphone array, 3D measurement and automatic tracking of a moving body in the sound field space are performed by the binocular stereo vision technology, a space-time relation between the sound field space and signals is established, the sound field measurement result is matched with 3D video images of a camera to visually display the motionprocess of the object and the dynamic change process of the sound field by dynamic video and obtain positions of various noise sources. The method causes the existing sound field visualization methodto be more accurate and practical, and causes the measurement and identification of motion noise to be easier, thus providing more accurate reference for the further sound source identification and noise reduction work.
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Description

technical field

[0001] The invention relates to a method for acquiring motion sound field video based on a random microphone array and binocular vision, and belongs to the technical field of noise analysis and control. Background technique

[0002] Noise in modern society has become a major source of environmental pollution. In order to deal with noise in a targeted manner, it is first necessary to obtain the sound field of the noise source more accurately and distinguish each sound source. The visualization of the sound field can make the positioning and analysis of the noise source more intuitive, thus providing a basis for further noise control work, which is of great significance to noise measurement and control work.

[0003] In traditional research, sound field visualization is generally realized by matching and displaying sound field contour maps or three-dimensional sound image maps with images of the measured object. This method needs to manually superimpose the m...

Claims

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