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voice recognition
Last modified: Wednesday, April 07, 2004 

The field of computer science that deals with designing computer systems that can recognize spoken words. Note that voice recognition implies only that the computer can take dictation, not that it understands what is being said. Comprehending human languages falls under a different field of computer science called natural language processing.

A number of voice recognition systems are available on the market. The most powerful can recognize thousands of words. However, they generally require an extended training session during which the computer system becomes accustomed to a particular voice and accent. Such systems are said to be speaker dependent.

Many systems also require that the speaker speak slowly and distinctly and separate each word with a short pause. These systems are called discrete speech systems. Recently, great strides have been made in continuous speech systems -- voice recognition systems that allow you to speak naturally. There are now several continuous-speech systems available for personal computers.

Because of their limitations and high cost, voice recognition systems have traditionally been used only in a few specialized situations. For example, such systems are useful in instances when the user is unable to use a keyboard to enter data because his or her hands are occupied or disabled. Instead of typing commands, the user can simply speak into a headset. Increasingly, however, as the cost decreases and performance improves, speech recognition systems are entering the mainstream and are being used as an alternative to keyboards.

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For pages about voice recognition . Also check out the following links!

Related Links

Speech Research Links 
Excellent collection of speech related resources on the Web.

21st Century Eloquence home page
21st Century Eloquence is a reseller of voice recognition software products. Their site contains information on voice recognition products, comparisons, articles, a newsletter, and downloadable demos.

Article on DragonDictate voice recognition software
A PC Magazine product review of DragonDictate for Windows. (May 1996)

Center for Spoken Language Understanding
The Center for Spoken Language Understanding is a research group dedicated to spoken langauge research. These pages describe current research, the CSLU toolkit, CSLU speech databases, and CSLU publications.

IBM Speech Recognition
Gives an overview of speech recognition technologies and discusses IBM's family of specific speech recognition products including VoiceType Dictation 3.0, Simply Speaking, Simply Speaking Gold and ViaVoice.

References and books on speech
This page lists references and books on speech recognition.

Voice recognition business article
This article, from April 1996, describes the future of personal computing with the use of voice recognition technology.

Voice recognition opinions page
Offers excerpts from various voice recognition experts.

Voice recognition software product reviews
An informative site that provides product reviews of voice recognition software packages.

Yahoo!'s speech recognition page
Yahoo!'s directory of speech recognition.

Yahoo!'s voice recognition page
Yahoo!'s directory of voice recognition.

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Data Exchange, Inc: Interactive Voice Response Services - Better pricing and technology, from the nation's leader in interactive voice response (IVR), Third Party Verification (TPV) service and call centers.

related categories



Pervasive Computing

related terms

artificial intelligence


natural language

pervasive computing


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