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Factors Influencing the Prediction of Speech Intelligibility

Leopold, Sarah Yoho
http://rave.ohiolink.edu/etdc/view?acc_num=osu1460464847

Abstract Details

2016, Doctor of Philosophy, Ohio State University, Speech and Hearing Science.
The three manuscripts presented here examine the relative importance of various `critical bands’ of speech, as well as their susceptibility to the corrupting influence of background noise. In the first manuscript, band-importance functions derived using a novel technique are compared to the standard functions given by the Speech Intelligibility Index (ANSI, 1997). The functions derived with the novel technique show a complex `microstructure’ not present in previous functions, possibly indicating an increased accuracy of the new method. In the second manuscript, this same technique is used to examine the effects of individual talkers and types of speech material on the shape of the band-importance functions. Results indicate a strong effect of speech material, but a smaller effect of talker. In addition, the use of ten talkers of different genders appears to greatly diminish any effect of individual talker. In the third manuscript, the susceptibility to noise of individual critical bands of speech was determined by systematically varying the signal-to-noise ratio in each band. The signal-to-noise ratio that resulted in a criterion decrement in intelligibility for each band was determined. Results from this study indicate that noise susceptibility is not equal across bands, as has been assumed. Further, noise susceptibility appears to be independent of the relative importance of each band. Implications for future applications of these data are discussed.
Eric Healy, Ph.D. (Advisor)
Rachael Frush Holt, Ph.D. (Committee Member)
DeLiang Wang, Ph.D. (Committee Member)
203 p.
Audiology
Speech; Hearing; Intelligibility; Hearing Loss; Speech Intelligibility Index, Articulation Index, Band Importance Functions

Recommended Citations

Citations

  • Leopold, S. Y. (2016). Factors Influencing the Prediction of Speech Intelligibility [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460464847

    APA Style (7th edition)

  • Leopold, Sarah. Factors Influencing the Prediction of Speech Intelligibility . 2016. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1460464847.

    MLA Style (8th edition)

  • Leopold, Sarah. "Factors Influencing the Prediction of Speech Intelligibility ." Doctoral dissertation, Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460464847

    Chicago Manual of Style (17th edition)

osu1460464847
651
© 2016, some rights reserved.Creative Commons License Factors Influencing the Prediction of Speech Intelligibility by Sarah Yoho Leopold is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by The Ohio State University and OhioLINK.