Audio detection method and device

An audio detection and audio technology, which is applied in voice analysis, instruments, etc., can solve problems such as unproposed solutions, and achieve the effects of high missed detection rate, wide application range, and reduced missed detection rate

Active Publication Date: 2021-07-16
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the above problems, no effective solution has been proposed

Method used

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  • Audio detection method and device
  • Audio detection method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] According to the present application embodiment, an embodiment of an audio detection method is also provided, and it is to be explained that the steps shown in the drawings may be performed in a computer system such as a set of computer executable instructions, and, Although logical sequences are shown in the flowchart, in some cases, the steps shown or described may be performed in the order different from herein.

[0044] The method embodiment of the present application embodiment can be performed in a mobile terminal, a computer terminal, or a similar computing device. Take it in the computer terminal, figure 1 It is a block diagram of a computer terminal for performing an audio detecting method according to an embodiment of the present application. Such as figure 1 As shown, the computer terminal 10 can include one or more (only one shown in the figure) processor 102 (processor 102 can include, but is not limited to, microprocessor MCU or programmable logic device FPGA,...

Embodiment 2

[0142] According to the embodiment of the present application, a device for implementing the above audio detection method, such as Figure 11 As shown, the apparatus includes:

[0143] Gets module 110 for obtaining audio fingerprints to be measured;

[0144] Alternatively, the acquisition module 110 is also used to obtain the above-described number N2 N2 N1 N1 and the number N2 of each of the audio files in the M-audio file in the above-described M-audio file. The similarity of the audio file to each of the audio files in the M-audio file, where N1, N2 and N are natural numbers; wherein the feature points are acquired by the following M-audio files. The anchor points corresponding to each frame of the audio file on the local maximum value of the spectral map are combined with an anchor in the preset matrix target area, and each combination is made as a characteristic point pair; wherein the anchor is The point for the sampling point corresponding to the local maximum value in each ...

Embodiment 3

[0153] Embodiments of the present application may provide a computer terminal that may be any of a computer terminal device in a computer terminal group. Alternatively, in the present embodiment, the computer terminal may replace a terminal device such as a mobile terminal.

[0154] Alternatively, in this embodiment, the computer terminal may be located at least one network device in a plurality of network devices of the computer network.

[0155] In the present embodiment, the computer terminal can perform program code of the following steps in the audio detection method: obtain an audio fingerprint to be measured; for each audio fingerprint to be measured, according to the above audio fingerprint The list of similar audio files to be measured; wherein each record in the above-described inverting list includes: sample fingerprint in the sample audio file identifier and audio fingerprint collection in the sample audio file identifier in the sample audio file The position of the ap...

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PUM

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Abstract

The application discloses an audio detection method and device. Wherein, the method includes: obtaining the audio fingerprint of the audio file to be tested; for each audio fingerprint of the audio file to be tested, searching for similar audio of the audio file to be tested from the inverted list corresponding to the audio fingerprint file; wherein, each record in the inverted list includes: a sample audio file identifier, and the position where the sample fingerprint occurs in the sample audio file, and the sample audio file is the audio file indicated by the sample audio file identifier ; Obtain the similarity between the audio file to be tested and the similar audio file, and determine whether the audio file to be tested is a specified type of audio according to the similarity.

Description

Technical field [0001] The present invention relates to the field of audio detection, and in particular, to an audio detection method and apparatus. Background technique [0002] At present, the detection of illegal audio is generally used by audio retrieval algorithms such as MD5 value, and audio digital watermark. [0003] MD5 value comparison: Any audio file's MD5 value is a text string with a length of 32. The MD5 value of the same audio file is inevitably; even if the two files have only one bit difference, the MD5 value is different. That is, even the same song, the file MD5 value at different sampling rates is also different. We can change whether the two audio files are the same as the problem that the two MD5 values ​​is consistent. The advantage of the MD5 value ratio method is simple, the correct rate is 100%, but the leak detection rate is high, and only the exactly the same audio file is exactly the index. [0004] Audio Digital Watermark: There is a specially design...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L25/54
CPCG10L25/54
Inventor 张荣
Owner ALIBABA GRP HLDG LTD
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