Sound source locating method and device based on microphone array

A microphone array and sound source localization technology, which is applied in positioning, measuring devices, instruments, etc., can solve the problems of slow calculation speed and large calculation amount, and achieve the effect of small calculation amount, fast calculation speed and strong practicability

Active Publication Date: 2017-06-20
HAIER YOUJIA INTELLIGENT TECH BEIJING CO LTD +1
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sound source localization method and device based on a microphon...

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  • Sound source locating method and device based on microphone array
  • Sound source locating method and device based on microphone array
  • Sound source locating method and device based on microphone array

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Embodiment Construction

[0074] 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, not all, embodiments of the present invention. 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.

[0075] An embodiment of the present invention provides a sound source localization method based on a microphone array, such as figure 1 As shown, it specifically includes the following steps:

[0076] Step 101, pre-construct a cuboid microphone array in the space to be detected.

[0077] Wherein, the cuboid microphone array includes at least one cuboid array block composed of eight-element microphones. For example, figure 2 The cuboid microphone array in i...

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Abstract

The invention discloses a sound source locating method and device based on a microphone array. The method comprises that a cuboid microphone array, which comprises at least one cuboid array block composed of eight microphones, is constructed in a to-be-detected space in advance; when a sound source is located, a target array block to which a target microphone of the highest sound-source signal intensity belongs is determined; and signal time delay between the target microphone and adjacent and diagonal microphones in the target array block is obtained, and a position of the sound source is calculated according to the signal time delay. According to the invention, the target microphone is determined, and then the concrete position of the sound source is calculated, tedious calculation as square root calculation is not needed, the computational complexity is low, the computing speed is high, and thus, the method and device are highly practical in the field of voice signal processing.

Description

technical field [0001] The present invention relates to the technical field of speech signal processing, in particular to a sound source localization method and device based on a microphone array. Background technique [0002] In recent years, with the increasing demand for positioning applications in industrial, civil and military fields, the research based on sound source detection and positioning systems has become a new research hotspot. Sound source localization technology is one of the important technologies of array signal processing, which has broad application prospects and practical significance. widely used. [0003] The current sound source localization system distributes multiple microphones in different positions in space according to a certain order, processes the voice signals received by each microphone, and finally calculates the final position of the sound source. However, with the richness of the noise environment and the intervention of reverberation, ...

Claims

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Application Information

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IPC IPC(8): G01S5/20
CPCG01S5/20
Inventor 刘海燕高兴龙李宏言其他发明人请求不公开姓名
Owner HAIER YOUJIA INTELLIGENT TECH BEIJING CO LTD
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