One of the fun, if challenging, things about new technology is that the vocabulary is up for grabs. Here's a contribution on "voice" vs. "speech" recognition.
In the technological sense as well as in the neurological sense, voice recognition and speech recognition are not synonyms. A person's ability to recognize a voice helps them answer the question, "Who's talking?" Speech recognition allows them to understand what is being said.
On the technology side:
Voice Recognition is a behavioral biometric modality that is used to distinguish among individuals for identity management purposes.
Speech Recognition is a software set designed to allow users to interact with IT hardware and systems by speaking.
