Feeds

PCs learn to lip read

Software boosts accuracy of speech recognition

  • alert
  • submit to reddit

Providing a secure and efficient Helpdesk

Scientists are teaching computers to lip read as part of research into improving speech recognition software at Carnegie Mellon University in Pittsburgh. The problem is that just like us, computers have trouble following speech in a noisy room. Whether we realise it or not, we compensate for reduced hearing by lip reading, and the idea is that computers can do this too. Alex Waibel, a computer scientist at the US university, has developed software that can do just that. Called NLips, the software improves the accuracy of speech recognition software to about 93 per cent. And it boosts the accuracy when there is a lot of background noise. Correct recognition falls to about 60 per cent if there is background noise. Waibel's software boosts this to 85 per cent. The software breaks sounds down into chunks called phonemes, like most speech recognition programs. Computer mounted cameras record lip movements and adjust for slight head movements. The footage is monitored by a neural network for 50 visual phoneme equivalents. The two streams of information are combined to produce the final text. Waibel told the New Scientist that the visual technology was hopeless on its own. It works so well because it is "looking at all these signals and capturing the perceptual world in its entirety, just as humans do." So far the research has demonstrated correct spelling of words, letter by letter, but the team hopes to move onto continuous speech soon and says that the transition should be uncomplicated. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Phones 4u slips into administration after EE cuts ties with Brit mobe retailer
More than 5,500 jobs could be axed if rescue mission fails
Apple CEO Tim Cook: TV is TERRIBLE and stuck in the 1970s
The iKing thinks telly is far too fiddly and ugly – basically, iTunes
Huawei ditches new Windows Phone mobe plans, blames poor sales
Giganto mobe firm slams door shut on Microsoft. OH DEAR
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
Forget silly privacy worries - help biometrics firms make MILLIONS
Beancounter reckons dabs-scanning tech is the next big moneypit
Microsoft's Office Delve wants work to be more like being on Facebook
Office Graph, social features for Office 365 going public
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.