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Distributed speech recognition system and method

A speech recognition and distributed technology, applied in speech recognition, speech analysis, special data processing applications, etc., can solve problems such as no recognition standards are proposed

Inactive Publication Date: 2006-03-15
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The constructed distributed speech recognition system has not yet been able to perform word recognition associated with characteristics of mobile terminals together with narrative natural language recognition, and no standard capable of performing such recognition has been proposed

Method used

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  • Distributed speech recognition system and method

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Embodiment Construction

[0043] The distributed speech recognition system and method thereof according to the present invention will now be more fully described with reference to the accompanying drawings.

[0044] FIG. 1 is a block diagram of a voice recognition system in a wireless terminal according to the present invention.

[0045] With reference to Fig. 1, the speech recognition system of wireless terminal (client end) comprises: microphone 10, speech detection unit 11, channel estimation unit 12, pause detection unit 13, feature extraction unit 14, model adaptation unit 15, speech recognition unit 16 , voice DB17, transmission data construction unit 18 and data transmission unit 19.

[0046] The speech detection unit 11 detects the speech signal cycle from the digital speech signal input through the microphone 10, and provides it to the channel estimation unit 12 and the pause detection unit 13, which can utilize the zero-crossing rate (ZCR) of the speech waveform, the signal energy etc., extr...

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Abstract

A distributed speech recognition system and method thereof in accordance with the present invention enables a word and a natural language to be recognized using detection of a pause period in a speech period in an inputted speech signal, and various groups of recognition vocabulary (for example, a home speech recognition vocabulary, a telematics vocabulary for a vehicle, a vocabulary for call center, and so forth) to be processed in the same speech recognition system by determining the recognition vocabulary required by a corresponding terminal using an identifier of the terminal since various terminals require various speech recognition targets. In addition, various types of channel distortion occurring due to the type of terminal and the recognition environment are minimized by adapting them to a speech database model using a channel estimation method so that the speech recognition performance is enhanced.

Description

technical field [0001] The present invention relates to a distributed speech recognition system and method using wireless communication between a network server and a mobile terminal. More particularly, the present invention relates to a distributed speech recognition system and method capable of recognizing natural language and countless words in a vocabulary in a mobile terminal by receiving assistance from a web server connected to a mobile communication network. Natural language is recognized as a result of processing in a mobile terminal utilizing language information in a web server in order to enable efficient voice recognition for mobile terminals limited in computing power and memory usage. Background technique [0002] In general, speech recognition technology can be divided into two types: speech recognition and speaker recognition. In turn, speech recognition systems are classified into speaker-dependent systems for recognizing only specified speakers and speake...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/26G10L15/00G06F17/30
CPCG10L15/30G10L25/78
Inventor 郑明基尹勉基沈贤植
Owner SAMSUNG ELECTRONICS CO LTD
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