In "D: All Things Digital" 2003:
Audience member: Where are we when it comes to speech as a user interface?
Steve Jobs: Speech has always been five years away. Most of the smart people in the field I know have gotten out of it. Even 1% error drives you nuts. Everyone has groups working on it, but it doesn't look like it will be real anytime soon.
That said... the excitement comes from discovering new uses within the current technology limits. I have seen:
(i) Better IVR (yes, those talking company directory and bank services over the phone). I must say it has improved significantly during the past 2 years. Just barely usable but save company $$$.
How do you like one for your own IVR answering machine though ? It should be not too difficult to do one using VoiceXML. Cell definitely has more than enough horsepower to drive this.
(ii) Instead of speech recognition, focus just on voice recognition. e.g., Since PS3 has multiple user profiles, make it recognize my voice to login (like Mac OS X, say "My voice is my password"). The voice print is stored as an alternative to the usual text password. I hate typing using controller so will go for voice password as a first go.
(iii) When people hurl expletives at each other over voice chat during a Socom session, have PS3 recognize keywords and respond with appropriate pre-recorded voice or text-to-voice (like a mild "Same to you !!!", "Muahahaa !"). The problem is you'll keep losing because PS3 spend so much time analyzing incoming nonsense.
Oh, I don't know. I bet Eyedentify would s*ck. If it's released, I don't mind renting a copy to try out.