> I actually doubt that; you're talking about the one with the painting, 
> right?  Most likely, they only have to recognize a few dozen words 
> (certainly less than a hundred!), and you can improve accuracy 
> dramatically by reducing the dictionary size.
>
> Dragon NaturallySpeaking has already demonstrated that a modern PC has 
> more than enough memory and processing power to reliably interpret 
> thousands of words.  Even the recent game EndWar used voice recognition to 
> control your troops.

Also things like voice recognition in cars work very well with a wide range 
of voice types and no training (and they typically have some low power cheap 
CPU).  My understanding was that if you only need to recognise a limited set 
of words then it's much easier.

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