[Colloquium] REMINDER: Talks at TTIC: Michael Mandel, Ohio State

[Dawn Ellis]

When:     Wednesday, February 12th at 11am

Where:    TTIC, 6045 S Kenwood Avenue, 5th Floor, Room #526

Speaker:  Michael Mandel, Ohio State

Title:
 
 Detailed models for understanding speech in noise

Abstract:

Microphones and headsets are everywhere.  In order to use them to
provide real-world next-generation services, such as conversational
mobile software agents, more detailed and context-dependent models of
speech are necessary. This talk presents two projects towards this
goal, motivated by the fact that human abilities to understand speech
in noise far outstrip current automatic approaches.  It will first
describe a new data-driven approach to building a detailed model of
human speech perception in noise.  By formulating intelligibility
prediction as a classification problem, the model can learn the
important spectro-temporal features of speech utterances from
listening test results. This is in contrast to traditional approaches,
which identify phonetic landmarks by hand.  The talk will then
describe the use of detailed models of speech to perform noise robust
automatic speech recognition.  Posed as an optimization problem, this
system finds the speech features that minimize a combination of the
distance to reliable regions of the noisy observation and the negative
log likelihood under a complete large vocabulary continuous speech
recognizer. It reduces both speech recognition errors and the distance
between the estimated speech and the original clean speech.

Host: Karen Livescu, klivescu at ttic.edu

-- 
*Dawn Ellis*
Administrative Coordinator,
Bookkeeper
773-834-1757
dellis at ttic.edu

TTIC
6045 S. Kenwood Ave.
Chicago, IL. 60637
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