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Quick-speed audio advertisement recognition method based on layered matching

A recognition method and advertising technology, applied in speech recognition, speech analysis, special data processing applications, etc., can solve problems such as disturbing the viewing and listening mode, affecting program playback, etc., to improve the accuracy rate and recall rate, reduce the amount of calculation and Computational complexity and the effect of reducing the number of matches

Inactive Publication Date: 2008-04-09
BEIJING JIAOTONG UNIV
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For viewers, on the one hand, advertisements affect the broadcasting of programs and disrupt people’s regular viewing and listening mode. Sometimes users have to spend a lot of storage space in the process of recording programs to record information that is of no use to them.

Method used

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  • Quick-speed audio advertisement recognition method based on layered matching
  • Quick-speed audio advertisement recognition method based on layered matching
  • Quick-speed audio advertisement recognition method based on layered matching

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] According to the technical solutions introduced above, we can easily apply the present invention to advertisement monitoring to provide users with accurate advertisement identification services. In conjunction with the accompanying drawings, we describe in detail the specific implementation of the present invention.

[0042] 1. Average zero-crossing rate feature extraction

[0043] In the present invention, the average zero-crossing rate is used to represent the characteristics of the audio segment. The average zero-crossing rate is the number of times the sampling signal in the audio frame passes through the zero point in the time domain divided by the total number of samples in the audio. This type of feature is easy to calculate and can eliminate errors caused by different amplitude signals. The formula for calculating the average z...

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Abstract

The invention relates to a rapid advertisement identification method which can rapidly detect whether TV or broadcast programs have the advertisements in a data base and is based on layered distribution. The invention is characterized in that the method comprises the following steps: construct an off-line data base and detect on-line, wherein the construction of the off-line data base is composed of an off-line preprocessing and a hash table construction; the on-line processing part is composed of the three parts which are an on-line preprocessing, a two-grade match from roughness to fineness and a post-processing.

Description

technical field [0001] The invention belongs to the field of audio advertisement identification methods, and in particular relates to a fast audio advertisement identification method based on hierarchical matching. Background technique [0002] With the advancement of science and information technology, especially the continuous development of computer technology, network technology and large-capacity storage technology, people have used various means to collect and produce a large number of various types of multimedia information data. Multimedia has become the main component of transmitting data on the information superhighway. Most of the various multimedia data contain audio data. How to go beyond traditional text-based retrieval and use physical characteristics such as audio amplitude and frequency spectrum, auditory characteristics such as loudness, pitch, and timbre, and semantic characteristics such as words and melodies to achieve content-based retrieval. Content-B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G10L15/00G10L15/02G10L15/08
Inventor 朱振峰刘楠赵耀
Owner BEIJING JIAOTONG UNIV
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