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Wind noise detection method, device and system

A detection method and wind noise technology, applied in speech analysis, instruments, etc., can solve problems such as inconvenient operation, and achieve the effect of convenient operation

Active Publication Date: 2019-03-05
HANGZHOU HIKVISION DIGITAL TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above solution, it is necessary to collect two channels of audio data at the same time, but in some scenarios that do not meet this condition, for example, in a single microphone scenario, if you want to collect two channels of audio data at the same time, you need to add other acquisition devices, which is inconvenient to operate

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  • Wind noise detection method, device and system
  • Wind noise detection method, device and system
  • Wind noise detection method, device and system

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Embodiment approach

[0162] As an implementation manner, the device may also include: a second judging module and a zeroing module (not shown in the figure), wherein,

[0163] A second judging module, configured to judge whether the spectral centroid is smaller than a second preset threshold when the judging result of the first judging module is yes, and the second preset threshold is smaller than the first preset threshold;

[0164] A zero-setting module, configured to set the frame of audio data to zero when the judgment result of the second judging module is yes.

[0165] As an implementation manner, the device may further include: a third judging module, a filtering module, and a second converting module (not shown in the figure), wherein,

[0166] A third judging module, configured to judge whether the spectral centroid is greater than or equal to a third preset threshold when the judging result of the first judging module is yes, and the third preset threshold is smaller than the first prese...

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Abstract

The invention provides a wind noise detection method, device and system. The method comprises that each frame of audio data is converted into frequency-domain data, and whether the audio data includeswind noise is determined according to the spectral centroid of the frequency-domain data. In one hand, wind noise detection can be realized via one path of audio data instead of collecting two pathsof audio data for comparison, and thus, operation is convenient; and in the other hand, compared with a scheme which needs two collectors to collecting two paths of audio data, only one collector is needed to collect one path of audio data, and the equipment cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of audio processing, in particular to a wind noise detection method, device and system. Background technique [0002] During audio acquisition, wind noise is usually an important factor affecting audio quality. In order to improve the audio quality, it is usually necessary to perform wind noise detection on the collected audio data. [0003] Wind noise detection usually needs to collect two channels of audio data at the same time, and compare the two channels of audio data. For example, compare the peak relationship and signal-to-noise ratio of the two channels of audio data. Whether there is wind noise. [0004] In the above solution, it is necessary to collect two channels of audio data at the same time, but in some scenarios that do not meet this condition, for example, in a single microphone scenario, if you want to collect two channels of audio data at the same time, you need to add other acqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/51G10L25/18G10L25/21G10L21/0232G10L21/0316
CPCG10L21/0232G10L21/0316G10L25/18G10L25/21G10L25/51
Inventor 杨茜
Owner HANGZHOU HIKVISION DIGITAL TECH
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