Newsgroups: comp.speech
Path: pavo.csi.cam.ac.uk!pipex!uunet!munnari.oz.au!manuel!nimbus!tridge
From: tridge@nimbus.anu.edu.au (Andrew Tridgell)
Subject: Re: Speech recognition info wanted
Message-ID: <1992Oct7.040129.9580@newshost.anu.edu.au>
Sender: news@newshost.anu.edu.au
Organization: Comp. Sci. Lab., Australian National Uni.
References:  <1992Oct5.174714.1925@ultb.isc.rit.edu>
Date: Wed, 7 Oct 92 04:01:29 GMT
Lines: 36

In article <1992Oct5.174714.1925@ultb.isc.rit.edu>, ajb8886@ritvax.isc.rit.edu writes:
|> Naturally of course, my primary interest is in the "holy grail", ie. 
|> speaker-independent recognition.  However, I'm also curious as to whether
|> there are any prototype programs that can merely display the the approximate
|> sound for a given syllable (ie "da ap rocks im eight sow and"); such a 
|> program would be very helpful as well.

The state of the art in speech recognition is quite impressive. There
are systems can can produce nearly 80% correct phonetic transcriptions
for an average unseen speaker, after training on hundreds of speakers.
This is for continuous read speech and can operate in real time on a
decent workstation. (see for example Tony Robinsons work with
recurrent neural networks)

Other systems produce word transcriptions with around 95% accuracy for
a relatively unconstrained grammer with the same sort of
"speaker-independant" data. Take a look at some of the recent Sphinx
reports from Carnegie Mellon University for example.

As far as commercially available systems the one that impresses me the
most is the Dragon system, which runs on a 386 with a DSP card. There
is a PhD student in the building next to mine who is writing his
thesis with this system as he is a quadraplegic. Apparently he can
achieve much better word rates than most people can type. Does anyone
from Dragon Systems want to post some more details?

The "holy grail" still hasn't been reached, but a lot of progress has
been made in the right direction.

Andrew

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Andrew Tridgell                 CSLab, Research School of Physical Sciences
Andrew.Tridgell@anu.edu.au      Australian National University (x3064)
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