Diane Kewley-Port, Director Diane Kewley-Port Lab Members Tessa Bent Dan Fogerty Jae Hee Lee Bill Mills Eric Oglesbee Alums Zach Burkle Sarah Hargus Ferguson Shawn Goodman Chang Liu Kyoko Nagao Kanae Nishi Carrie Richie
	Research goals in the Speech Psychophysics Laboratory include modeling the basic capabilities of the auditory system to process the acoustic details of speech and then determining the relation of these processes to the perception of speech in normal discourse. The current focus is on the processing of vowels by listeners with normal or impaired hearing.

Kewley-Port, D., Burkle, T.Z. and Lee, J.H. (2007). Contribution of consonant versus vowel information to sentence intelligibility for young normal-hearing and elderly hearing-impaired listeners. J. Acoust. Soc. Am., 122, 2365-2375.

Lee, J.H., Kewley-Port, D.and Humes, L. (2007). Quantitative and qualitative differences in understanding sentences interrupted with noise by young normal-hearing and elderly hearing-impaired listeners. Presentation at the 2007 International Research Conference on Aging and Speech Communication, Indiana, USA.

Click here for sample sentences in .ppt file for above two studies.

Ferguson, S. and Kewley-Port, D. (2007). Talker differences in clear and conversational speech: Acoustic characteristics of vowels. J. Speech-Language-Hearing Res., in press.

Nishi, K. and Kewley-Port, D. (2007). Training Japanese Listeners to Perceive American English Vowels: Influence of Training Sets. J. Speech-Language-Hearing Res., in press.

Liu, C. and Kewley-Port, D. (2007). Factors affecting vowel formant discrimination by hearing-impaired listeners. Accepted to J. Acoust. Soc. Am.

Nishi, K. and Kewley-Port, D. (2007). Nonnative Speech Perception Training Using Vowel Subsets: Effects of Contrast Choice and Order of Training. Submitted to J. Speech-Language-Hearing Res.

Oglesbee, E. and Kewley-Port, D. (2007). Estimating vowel formant discrimination thresholds using a single-interval classification task. Submitted to J. Acoust. Soc. Am.

Kewley-Port, D, Humes, L. E., and Fogerty, D. (2007). Identification of brief vowel sequences by young and elderly listeners. J. Acoust. Soc. Am., 121, No. 5., 3188. Presented in May at the 153rd Meeting of the Acoustical Society of America, Utah.

Nishi, K. and Kewley-Port, D. (2006). Factors affecting the success of non-native vowel perception training. J. Acoust. Soc. Am., 120, No. 5., 3169. Presented in December at the 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, Honolulu.

Presentation by Kewley-Port, D. Topics in Speech Perception. Tutorial and Research Workshop
on Experimental Linguistics, ISCA, 28-30 August 2006, Athens, Greece.

Presentation by Kewley-Port, D. (2005). Perception of vowels by elderly listeners with impaired hearing. Aging and Speech Communication Conference, Oct. 9-12, 2005, Indiana University.

Presentation by Kewley-Port, D., Bohn, O-K, and Nishi, K. (2005). The influence of different native language systems of vowel discimination and identification. J. Acoust. Soc. Am. 117, 2339.

Burkle, T. Z. (2004) Contribution of consonant versus vowel information to sentence intelligibility by normal and hearing-impaired listeners. Unpublished masters thesis, Indiana University.

Last updated on October 16, 2007