skip to main content
Department of Computer Science University of Colorado Boulder
cu: home | engineering | mycuinfo | about | cu a-z | search cu | contact cu cs: about | calendar | directory | catalog | schedules | mobile | contact cs
home · events · colloquia · 2003-2004 · 

Colloquium - Pellom

ECCR 265

The SONIC Large Vocabulary Speech Recognition System
Center for Speech and Language Research
Bryan Pellom photo

The field of Automatic Speech Recognition (ASR) has a history dating back well over three decades. To-date machine recognition still lags human performance by one to two orders of magnitude. Most systems continue to fail miserably in the presence of noise, speaker accent, young and aging voices, or even conversational speech. For ASR to become a ubiquitous technology, significant research advances will need to be made in a number of key areas ranging from signal processing to data modeling and search.

To overcome these barriers, this talk will introduce SONIC, a large vocabulary continuous speech recognition platform developed at the University of Colorado. SONIC, which is freely distributed to other research labs for non-commercial use, currently achieves state-of-the-art performance on a number of commonly evaluated speech databases while also being computationally efficient, real-time, and rapidly portable to new languages. This talk presents an overview to SONIC and describes approaches used within the system to address major speech recognition problems through improved front-end signal processing, acoustic and language modeling, and search methods. This platform is used for teaching and training at the Center for Spoken Language Research (CSLR) and provides the basis for research within a wide variety of funded programs. The talk will conclude by demonstrating several ways in which this platform is being extended by other commercial and academic institutions and present a vision for the future.

Hosted by Dirk Grunwald.

The Department holds colloquia throughout the Fall and Spring semesters. These colloquia, open to the public, are typically held on Thursday afternoons, but sometimes occur at other times as well. If you would like to receive email notification of upcoming colloquia, subscribe to our Colloquia Mailing List. If you would like to schedule a colloquium, see Colloquium Scheduling.

Sign language interpreters are available upon request. Please contact Stephanie Morris at least five days prior to the colloquium.

See also:
Department of Computer Science
College of Engineering and Applied Science
University of Colorado Boulder
Boulder, CO 80309-0430 USA
Send email to

Engineering Center Office Tower
ECOT 717
FAX +1-303-492-2844
XHTML 1.0/CSS2 ©2012 Regents of the University of Colorado
Privacy · Legal · Trademarks
May 5, 2012 (13:29)