Voice recognition software attempts to identify "who" is
speaking, whereas speech recognition software deals mainly with the
meaning of what is being said.
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There are three different types of speech recognition software.
The first type is discrete word recognition. The next one is
connected word recognition. The Last one is continuous speech.
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Speech-recognition software or (voice-recognition software)
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There are some speech recognition softwares available for
download for free trials but if you need a good one, you should
look into professional speech recognition software such as the ones
on nuance.com