Thesis (B.Sc)--University of Hong Kong, 2007. / "A dissertation submitted in partial fulfilment of the requirements for the Bachelor of Science (Speech and Hearing Sciences), The University of Hong Kong, June 30, 2007." Includes bibliographical references (p. 27-30). Also available in print.

Auditory nerve fiber models provide further insight into the inner workings of the ear and brain. These models have helped us to develop physiologically based speech intelligibility metrics, to assess the difficulty of understanding speech objectively. Several metrics have been developed, but they have been developed using a range of auditory nerve (AN) fiber models. A full comparison of different metrics on even footing should be performed to evaluate the accuracy of their predictions. Speech intelligibility is understood to be dependant on both temporal fine structure and envelope cues in the acoustic speech signal, which are however linked in a way where they are very difficult to split. This makes the evaluation of speech intelligibility metrics tricky, as metrics often aim to analyze mean rate and fine timing information in the auditory nerve representation of the acoustic cues. In this study, a method of phase distortion was developed, with the goal of degrading the fine timing information of a speech signal to the point where only the mean rate representation in the AN is contributing to the speech intelligibility. Also, the neural cross correlation coefficients developed in Heinz & Swaminathan (2009) were adapted from the Zilany & Bruce (2007) auditory nerve model to the Bruce, Erfani & Zilany (2018) AN model. / Thesis / Master of Applied Science (MASc)

published_or_final_version / abstract / Speech and Hearing Sciences / Master / Master of Science in Audiology

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Thesis (M. Sc.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.

Recent research has shifted the focus of pronunciation instruction from achieving native-like speech in learners to correcting issues that affect the intelligibility of the learners’ speech. Research also suggests that suprasegmental features of pronunciation, such as intonation, rhythm, and stress, have a considerable influence on intelligibility. By using Dickerson’s (1989) Covert Rehearsal Model, which includes predictive strategies that encourage learner autonomy, instructors have the tools necessary to effectively help learners improve their intelligibility. However, the question as to which instructional targets should be taught in the classroom still remains. This report outlines one way in which instructors can use a diagnostic assessment in order to discover which instructional targets are most appropriate for their learners. / text

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