Sound identifying method for geographic information and its application in navigation system

A speech recognition, geographic information technology, applied in speech recognition, navigation, speech analysis and other directions, can solve the problem of low recognition rate

Inactive Publication Date: 2005-09-28
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art, aiming at the low recognition rate of current Chinese speech recognition software in the noise environment, the existing speech recognition module is the basic tool for speech data collection and recognition, For th

Method used

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  • Sound identifying method for geographic information and its application in navigation system
  • Sound identifying method for geographic information and its application in navigation system
  • Sound identifying method for geographic information and its application in navigation system

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Embodiment

[0039] Taking the traffic navigation system under the support of the electronic map as an example, by collecting the urban electronic map database, including the spatial data and place name information of the urban map (especially including urban traffic), the navigation syntax-keyword rule base is set up, and the voice system of the present invention is used. The recognition method is to convert the keyword string of each syntax into a pinyin string as the source string, and match it with the target string of voice input to obtain a set of similar matching degree values, and take the pinyin character corresponding to the largest value The string is used as a keyword, and based on this, the noisy geographical information name string is intercepted. Take the geographical information name string from the electronic map database and convert it into a pinyin string as the source string, and use the noisy geographical information name string as the target string to calculate the sim...

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Abstract

A speech recognition method of geographic data includes utilizing the existed speech recognition module and its calling interface to obtain recognized random character string and to convert it to be phonetic character string, converting geographic data character string picked up form geographic databank to be phonetic character string, calculating degree of matching for the two and using source string with most close degree of matching as result character string i.e geographic data name. The method can be applied in navigation system to raise its intelligent level.

Description

technical field [0001] The invention relates to a speech recognition method, in particular to a speech recognition method for geographic information and its application in a navigation system. Background technique [0002] Speech recognition technology is a high technology that allows machines to convert voice signals into corresponding text or commands through the process of recognition and understanding. It can provide intelligent human-computer interaction interface services for electronic maps and geographic information system (GIS) applications. Geographic information has the characteristics of wide application. For a geographic information product, there are usually many users and frequent changes. The external environment is noisy and random. In addition, Chinese characters are generally used for place name information in our country, and sometimes there is no semantic connection between characters. It directly affects the application of speech re...

Claims

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Application Information

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IPC IPC(8): G01C21/00G10L15/20G10L15/30G10L21/02
Inventor 张亮龙毅
Owner NANJING NORMAL UNIVERSITY
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