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Audio fingerprint extracting system

A technology for extracting system and audio fingerprints, applied in speech analysis, instruments, etc., can solve the problem of high fingerprint collision rate, achieve the effects of improving accuracy, speeding up retrieval efficiency, and enriching information

Inactive Publication Date: 2019-09-27
南京信安融慧网络技术有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide an audio fingerprint extraction algorithm in audio retrieval to solve the problem of high fingerprint collision rate in mass audio retrieval

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Embodiment Construction

[0027] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0028] The applicant found through research: audio fingerprint extraction algorithms, the most classic of which are Philips Robust Hash (Philips Robust Hash, PRH) and Shazam algorithms. Most of the follow-up researchers are constantly improving and improving on the basis of these two algorithms, but the main feature of the PRH algorithm is to extract global information from the entire frequency spectrum of the audio, which has a large amount of information and strong distinguishability of features, but it does not The stickiness is not high; the main feature of...

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Abstract

The invention discloses an audio fingerprint extracting system, and belongs to the technical field of information extraction. The audio fingerprint extracting system comprises a data processing module, a feature point selection module and a fingerprint generating module; the data processing module is used for preprocessing audio PCM data; the input end of the feature point selection module is connected with the output end of the data processing module; the input end of the fingerprint generating module is connected with the output end of the feature point selection module; and a fingerprint output module is used for outputting audio fingerprint information. According to an audio fingerprint extracting algorithm, the information quantity of audio fingerprints is increased, the collision rate of the fingerprints is decreased, the accuracy rate of the audio fingerprints is increased, and the retrieval efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of information extraction, in particular to an audio fingerprint extraction system. Background technique [0002] With the development of network technology and multimedia technology, digital multimedia resources are becoming more and more easy to obtain, and multimedia distribution is becoming more and more convenient, and multimedia data is showing explosive growth. In this context, how to manage multimedia resources and realize their automatic labeling, classification and retrieval has gradually become a research hotspot. Among various multimedia resources, audio resources have received special attention from researchers because of their unique forms and uses. [0003] At present, there have been many achievements in the retrieval and identification of audio resources, mainly based on three aspects: time domain analysis, frequency domain analysis or cepstrum domain analysis. The advent of the big data e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/03G10L25/18G10L25/45G10L25/54
CPCG10L25/03G10L25/18G10L25/45G10L25/54
Inventor 任云蔡荣华
Owner 南京信安融慧网络技术有限公司
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