Method and device for audio information retrieval

An audio information and audio technology, applied in the field of data processing, can solve the problems of low efficiency and long time spent in audio information retrieval, and achieve the effect of ensuring normal Internet experience

Active Publication Date: 2018-09-07
SHENZHEN TENCENT COMP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the method of manually reviewing audio information takes a long time, and the retrieval efficiency of audio information is low

Method used

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  • Method and device for audio information retrieval
  • Method and device for audio information retrieval
  • Method and device for audio information retrieval

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Through the analysis of the uploaded audio information, it is found that the data in each malicious audio information has a large number of repetitions with each other. For example, the user may upload a single audio information containing malicious information multiple times, or upload the audio information after simple editing, etc. We can call such audio information with a large amount of repeated content as homologous information. For example, for a piece of audio information A, the user can insert some other audio data into its audio information, and then recompress to obtain audio information B, then audio information B is the same source information of audio information A. That is to say, when the audio information A has been determined to contain malicious information, the audio information A can be stored as a sample audio in the audio feature library, and the homologous information with the sample audio is determined to contain malicious information. The audio...

Embodiment 2

[0103] refer to image 3 , image 3 A structural diagram of an audio information retrieval device provided in this embodiment, the device may include:

[0104] The first acquiring module 301 is configured to acquire audio information to be processed;

[0105] The second acquiring module 302 is configured to acquire the audio data of the audio information to be processed;

[0106] An extraction module 303, configured to extract a feature group of the audio data, the feature group including no less than one feature;

[0107] The extraction module may include:

[0108] A framing submodule, configured to divide the audio data into frames to obtain frame data;

[0109] The transformation sub-module is used to perform short-time Fourier transform on the frame data to obtain transformed frame data;

[0110] The frequency division sub-module is used to divide the converted frame data into frequency to obtain a spectrum diagram;

[0111] The extraction submodule is used to extract ...

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Abstract

The invention discloses a method and a device for audio information retrieval. The method comprises the steps of obtaining audio information to be treated; obtaining audio data of the audio information to be treated; extracting a feature group of the audio data, wherein the feature group comprises at least one feature; according to the feature group, determining homological information of the audio information to be treated in a preset audio feature library. As malignant information contained in the audio information can be retrieved, the audio information containing the malignant information is prevented from being transmitted at the internet, and the normal net surfing experience of a user is ensured.

Description

technical field [0001] The invention relates to the field of data processing, in particular to an audio information retrieval method and device. Background technique [0002] With the development of the Internet, there are more and more multimedia information on the network. At the same time, business models that can provide multimedia information services emerge in an endless stream, such as Weibo, podcast, etc., which support users to upload audio information through the network. However, it is unavoidable that the audio information uploaded by users may contain content that does not comply with existing laws and regulations, such as pornography, obscenity, reactionary, feudal superstition, murder violence, terror, abetting crimes, etc. Copyright-protected information may also be advertisements for the purpose of seeking commercial benefits. These audio information that maliciously damage the user experience need to be screened and deleted in a timely manner to ensure the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/683
Inventor 黄亮
Owner SHENZHEN TENCENT COMP SYST CO LTD
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