Speech Perception Laboratory

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Peter Assmann

Peter Assmann
Principal Investigator, Professor, School of Behavioral & Brain Sciences
The University of Texas at Dallas Richardson TX 75083
Tel: (972) 883-2435
Fax: (972) 883-2491
Email: [email protected]
CV
Nature
My research is concerned with the perceptual strategies used by listeners to recognize speech. We are developing a database of speech recordings from adults and children ranging in age from 5 to 18 years to study the acoustic scaling transformations that take place as children grow into adults. These recordings provide materials for designing listening experiments, acoustic parameters for realistic voice synthesis and voice conversion, and normative data for studies of speech perception and production in adults and children. Acoustic measurements from the recorded samples are incorporated into statistical models to predict the responses of listeners to natural and synthesized speech. These models provide a basis for testing and refining hypotheses about the perceptual transformations that listeners apply to cope with acoustic variability, and the processes by which they extract phonetic and indexical information in speech perception.

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Michelle Kapolowicz

Michelle Kapolowicz
Ph.D. 2018 in Cognition and Neuroscience
[email protected]
CV

I am interested in how we are able to adapt to differences in speech production, ranging from variations in indexical properties to understanding speech in distorted listening conditions. My dissertation is focused on exploring the role of spectral information in listeners' ability to adapt to foreign-accented speech. More specifically, I am examining how talker identity cues aid listeners in this adaptation process. I am also involved in ongoing research using vocoded speech to manipulate certain characteristics of the speech signal in children's speech in order to determine which components are most utilized when judging a speaker's age and sex.

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Vahid Montazeri

Vahid Montazeri
Ph.D. student in Communication Sciences and Disorders
[email protected]
CV

While obtaining my M.S., my research was focused on signal processing, specifically speech enhancement algorithms and speech recognizers. Now working towards my Ph.D., my focus has been expanded to investigate potential mechanisms underlying the perception of speech under adverse conditions in normal hearing individuals as well as cochlear implant recipients. The core of my dissertation research is to study models of speech perception in the presence of background noise and to understand their practical implications towards improving speech enhancement techniques. More specifically, I'm interested in ideal binary masking-based speech enhancement in cochlear implant users.

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Olga Peskova

Olga Peskova
Ph.D. student in Communication Sciences and Disorders
[email protected]
CV

I am interested in development of communication in children with cochlear implants (CIs). My research focuses on the association between mechanisms of speech perception and production in children with progressive hearing losses who received cochlear implantation to restore aspects of their hearing. My previous work focused on the development of speech production in CI recipients, including the influence of phonological errors on speech intelligibility.

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Danni Yang

Danni Yang
Undergraduate student in Neuroscience
[email protected]

I am a neuroscience major on the premedical track. I am interested in research regarding how vocal sounds shape a person's perception of the speaker. As an undergraduate research assistant, I help test participants in listening experiments. Currently, we are testing height and age perception of children based on vowel sounds.

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Christina Mai

Christina Mai
Undergraduate student in Cognitive Science
[email protected]

I am interested in language acquisition, particularly to inform language learning achieved through formal education. My goal is to continue in research after my undergraduate studies, and eventually I would also like to find more intersections between machine learning and speech processing. I am currently a research assistant on a project about the perception and adaptation of foreign-accented speech, specifically that of vowels.

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Katelyn Foxworth

Katelyn Foxworth
Undergraduate student in Speech-Language Pathology and Audiology
[email protected]

I am an undergraduate student of speech-language pathology and audiology here at UT Dallas. My research interests include the perception and production of speech both in regards to foreign accent and cochlear implantation. I plan to earn a Master's degree in communication disorders after I graduate in the Spring of 2019.

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Alumni

Daniel Guest - BS, 2017 LinkedIn email
James Kuang -
Dwayne Paschall - PhD, 1995
Ginger Stickney - PhD, 2001
David Massey - MS, 2015
Denise Cardenas - MS, 2014
Shaikat Hossain - PhD, 2016 LinkedIn email
Daniel Hubbard - PhD, 2016 LinkedIn email
Sarah Levitt - MS, 2016 LinkedIn email
Adrian Cho - 2016 LinkedIn email