Similarity measurement method for audio-frequency fragments

An audio clip and similarity technology, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of limiting the accuracy of audio retrieval, unable to describe the content change characteristics of audio clips, etc., and achieve the effect of high retrieval accuracy.

Active Publication Date: 2007-11-28
新方正控股发展有限责任公司 +2
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is based on the statistical characteristics of the entire audio clip, so it cannot descri

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Similarity measurement method for audio-frequency fragments
  • Similarity measurement method for audio-frequency fragments
  • Similarity measurement method for audio-frequency fragments

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0045] As shown in Figure 1, the method of the present invention specifically includes the following steps:

[0046] (1) Divide the queried audio fragments and audio fragments in the audio library into audio units with similar sound quality;

[0047] First, using Bayesian Information Criterion (BIC), the audio segment is divided into audio units with similar sound quality. For a detailed description of the Bayesian information standard, you can refer to the document "Efficient Audio Segmentation Algorithms based on the BIC" [M. Cettolo and M. Vescovi, IEEE International Conference on Acoustics, Speech and Signal Processing, 2003].

[0048] (2) Calculate the similarity between the audio unit in the query audio segment and the audio segment in the audio library respectively;

[0049] The feature vector of the audio frame is a 13-dimensional feature vect...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method of measuring similarity degree among the acoustical frequency fragment. The present technique represents the whole acoustical frequency fragment with the acoustical frequency characteristic owing to not considering the difference of the specific content in the acoustical frequency fragment, so the present technique doesn' t measure the similarity degree of the acoustical frequency content effectively. Pointing to the above problem, the invention divides the acoustical frequency fragment in to two layers: the acoustical frequency unit and the acoustical frequency fragment. In the acoustical frequency unit procedure, the acoustical frequency unit is defined series of acoustical frequency frames with similar acoustic fidelity. Firstly, the acoustical frequency fragment is divided into series of the acoustical frequency units and the similar degree of the acoustical frequency unit is measured; what' s more, in the acoustical frequency fragment procedure, the similar degree of two acoustical frequency fragments is measured and modeled a weighted dimidiate graph based on the measuring result of the acoustical frequency unit; at last, the similar degree of two acoustical frequency fragments is measured with optimum matching. The invention provides higher search accuracy, which shows the important effect of the acoustical search technique in the information retrieval.

Description

technical field [0001] The invention belongs to the technical field of audio retrieval, and in particular relates to a method for measuring the similarity between audio clips. Background technique [0002] With the continuous increase of multimedia materials and applications, audio analysis and retrieval technology is becoming more and more important, and audio clip retrieval is an important form of the above technology, that is, how to automatically retrieve an audio clip from the audio library given by the user Find similar audio clips and sort them in descending order of similarity. Existing audio retrieval technologies generally extract audio features from audio clips, and then use these features to measure similarity, and perform retrieval based on the measurement results. Because this method does not consider the difference in the specific content of the audio clips, but uses audio features to represent the entire audio clip, it cannot effectively measure the similari...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/30
Inventor 彭宇新房翠华陈晓鸥吴於茜
Owner 新方正控股发展有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap