[Asterisk-Users] Anybody using Sphinx

[Chris Albertson]

--- Steve Underwood <steveu at coppice.org> wrote:
> Arnold Ligtvoet wrote:
> 
> >Since I would like the user names to be auto-generated by the
> system, I
> >would guess that this could best be done using festival with a
> localized
> >voice. I think there is a Dutch voice for Mbrola with should
> integrate into
> >festival ( note to self : need bigger harddisk :-) )
> >  
> >
> Speech recognition accuracy is not great under ideal conditions.
> Doing 
> what you suggest seems unlikely to achieve any meaningful accuracy. 
> Speech recognition training systems require many occurances of a word
> or 
> phrase, clearly spoken, before their accuracy becomes useful. A one
> shot 
> utterance from Festival seems to fail on both counts :-)
> 
> Bottom line: the very best speech recognition still sucks. As a
> British 
> speaker I never get more than about 40% accuracy speaking into a US 
> trained recogniser. I have never had better than about 70-80%
> accuracy 
> on a British trained recogniser. Strangely, my terrible Cantonese
> gets 
> nearly 100% on SpeechWorks recogniser. :-\

An interresting question might be "How well to humans recognize
words in the same situation?"  I doubt they can score better then 80%.

Sounds low but "same situation" means the human does nt have access
to the grametric or semantic context and must recognize the words
one at a time in radom order over a telphone.

But if you design the application "correctly" and you look not just at
the firt pick but the whole probibility list you can do well.  Well
being maybe 80% or so.  So one in five time you have to ask the use
to press a key or something.

I agree 100%.  You will have to get some people together to train
the system.  

=====
Chris Albertson
  Home:   310-376-1029  chrisalbertson90278 at yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson at aero.org
  KG6OMK

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