>That's what I was wondering, Judy. I mean they seem theoretically >the same, so I wonder what the technological differences actually >are beyond a matter of (expensive) quality the one Medicaid's using is speaker-independent small-vocabulary, limited vocabulary, will only accept certain input. NaturallySpeaking (and ViaVoice and Windows Vista SR) are trained by the speaker who'll use it (basically) though NaturallySpeaking is now very good 'out of the box', and normally can't be used successfully without a good microphone and sound car and, in most cases, a reasonably good environment. (Some people can get round this to an extent because they have remarkably good voices, some mikes are good enough for rather poor or simply very noisy environments.) 'Phone quality sound is simply not good enough for programs like NaturallySpeaking. (Also NaturallySpeaking etc. are technically different -- analyse sounds in a different way from the speaker-independent programs -- but I don't know anything about that.) Youtube has some NaturallySpeaking videos, e.g. http://www.youtube.com/watch?v=h4RD4sOI-Wg Judy Evans, Cardiff