Audio analysis system based on content

A technology of audio analysis and content, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as not being able to complete tasks well

Inactive Publication Date: 2007-08-22
北京新岸线网络技术有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, audio retrieval is mostly based on manually input attributes and descriptions. However, with the abundance of audio resource...

Method used

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  • Audio analysis system based on content
  • Audio analysis system based on content
  • Audio analysis system based on content

Examples

Experimental program
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Embodiment Construction

[0012] Referring to Figure 1, for an audio analysis system, the audio stream acquisition module is the basis of the entire audio analysis and is a process of preprocessing data. The decoder will adopt different decoding methods for different audio stream sources. There are many sources of audio streams, asf / wma / wmv / avi / wav / mpeg / mp3 / aiff / pcm / raw / vox are all possible sources of audio streams, and the sampling frequency and sampling bit of the audio in each source The numbers are different: for example, the sampling frequency of telephone audio is generally 8000Hz, while the sampling frequency of CD is generally 44100Hz; the number of sampling bits will also vary from 8 bits to 24 bits due to different sources. After the audio stream acquisition module is used, the audio streams from various sources are unified into one format. The audio streams in this unified format have the same sampling frequency and number of sampling bits, and only contain the information of the digitized a...

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Abstract

An audio analysis system for contents including: an audio flow obtaining module, an audio flow segment module, an audio flow type judgment module, a phone flow analysis module and a key word search module based on spelling sequences, in which, the audio flow obtaining module gets an audio flow from outside and sends it to the segment module to segment it to enable each section has a single acoustic character, and the audio flow with a single character is sent to the audio flow judgment module for analysis to get its character kind, the segment determined to be non-phonetic is cast away and the phone audio segments are sent to the phone analysis module to get a spelling pattern and then the key word search module based on the spelling sequence searches the key words to get the position in the audio flow.

Description

technical field [0001] The invention provides a content-based automatic audio analysis system and method thereof. More specifically, an audio analysis system and method thereof for determining location information of specific content from audio clips are provided. Background technique [0002] As technology has advanced, more and more audio information has been stored digitally in recent years. In order to enable these information to be effectively used and enable people to quickly and accurately find the information they need, it is necessary to establish an effective audio retrieval system. [0003] Audio retrieval refers to the process of finding specific audio that meets user needs from audio resources. At present, audio retrieval is mostly based on manually input attributes and descriptions. However, with the abundance of audio resources and the increase in people's demand for audio search, the retrieval system built in this way can no longer fulfill the required task...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 张弛苏磊鲍东山
Owner 北京新岸线网络技术有限公司
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