https://github.com/drammock/dissertation

https://github.com/drammock/dissertation

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• Host: GitHub
• URL: https://github.com/drammock/dissertation
• Owner: drammock
• Created: 2020-06-25T16:25:43.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-06-25T17:07:40.000Z (almost 5 years ago)
• Last Synced: 2025-01-14T13:27:12.524Z (5 months ago)
• Language: TeX
• Size: 3.18 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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dissertation

====

my dissertation. Abstract:

> This thesis concerns the relationship between speech intelligibility and

  speech prosody, and the role that speech prosody plays in the perceptual

  advantage that occurs when listening to a familiar talker.  A parallel corpus

  of 90 sentences (each spoken by three talkers of varying intelligibility) was

  used to create resynthesized stimuli in which fundamental frequency (ƒ₀),

  intensity, and patterns of syllable duration were swapped between all

  possible pairs of talkers.  An additional 90 sentences were reserved for use

  as training stimuli.

> Findings from speech-in-noise tasks suggest that the contribution of prosody

  to intelligibility varies considerably across talkers, evidenced by

  differences in sentence intelligibility after prosodic replacement from

  different prosodic donors. In particular, high-intelligibility talkers need

  not have particularly “good” or “helpful” prosody if their intelligibility

  rests on articulatory strategies that emphasize robust segmental cues, while

  talkers with relatively good prosody may nonetheless have low intelligibility

  (due to non-prosodic factors).

> Post hoc acoustic analyses of the stimuli (interpreted in light of the

  behavioral results) suggest that many acoustic measures index both prosodic

  and non-prosodic aspects of the speech signal, whereas acoustic measures that

  reflect only the prosodic component of intelligibility are harder to find.

  Mean ƒ₀ range and mean ƒ₀ dynamicity appear to be the most promising measures

  in this regard, but utterance-final creaky voicing presents a challenge to

  interpretation due to its exaggeration of ƒ₀-related measures.

> Results of the familiarization experiments were inconclusive; listeners

  trained on different talkers showed different degrees of task adaptation

  during familiarization/training, but were unable to generalize to a testing

  phase involving multiple talkers presented in random order.  Thus the

  contribution of prosody to the familiar talker advantage remains unclear.