Audio sub-fingerprint retrieval method, device and audio inquiry system

An audio fingerprint and audio sub-technology, which is applied in the field of audio file retrieval, can solve problems such as doubts about practicability, no method for extracting key values, and no fast retrieval of audio files.

Pending Publication Date: 2019-02-26
ALIBABA GRP HLDG LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned existing technology only solves the solution of server allocation in audio fingerprint retrieval, and does not provide a specific method for realizing fast retrieval of audio files, w

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  • Audio sub-fingerprint retrieval method, device and audio inquiry system
  • Audio sub-fingerprint retrieval method, device and audio inquiry system
  • Audio sub-fingerprint retrieval method, device and audio inquiry system

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Embodiment Construction

[0135] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0136] The first embodiment of the present application provides an audio sub-fingerprint retrieval method. Please see figure 1 , which is a flowchart of the first embodiment of the present application. Please also see figure 2 , which is a schematic diagram of the relationship among the index table, posting table, mapping table and fingerprint library involved in the audio sub-fingerprint retrieval in the first embodiment of the present application. The following combination figure 1 , figure 2 A method for re...

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Abstract

A retrieval method includes obtaining an audio sub-fingerprint to be retrieved, obtaining an audio sub-fingerprint to be retrieved, and retrieving the audio sub-fingerprint. According to the audio sub-fingerprint, reading an inverted item head address recorded in an index entry corresponding to the audio sub-fingerprint in a pre-generated address index table; Reading an inverted item entry corresponding to the audio sub-fingerprint in a pre-generated inverted table according to the inverted item head address, and obtaining each audio identifier ID recorded under the entry; According to the audio identifier ID, by a pre-generated audio identifier ID-Audio fingerprint database address mapping table, obtains the audio fingerprint file corresponding to each audio identifier ID in the audio fingerprint database storage address. The audio sub-fingerprint retrieval method provided by the present application draws on the inverted table method in text retrieval, and can quickly obtain the audioidentifier ID containing the audio sub-fingerprint. The present application also provides a retrieval method for identifying audio files and an audio inquiry system.

Description

technical field [0001] The present application relates to the field of audio file retrieval, in particular to a method and device for audio sub-fingerprint retrieval. The present application also relates to a retrieval method and device for identifying audio files. The present application also relates to an audio query system. Background technique [0002] Querying audio content for identifying audio files has been widely used. For example, using a mobile phone to collect a song and requesting to query the name of the song, or using an audio file stored in the mobile phone to query the relevant information of the audio file, etc., are all applications for audio file query. [0003] In order to identify audio files, the prior art provides a technical solution for collecting audio fingerprints of audio files. The general audio fingerprint technology is to process audio files as follows: every 11.6ms extracts a 32bit frame reflecting the audio characteristics of this period ...

Claims

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Application Information

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IPC IPC(8): G06F16/63G06F16/61
Inventor 岳席文
Owner ALIBABA GRP HLDG LTD
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