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undergraduate thesis: Perceptual contribution of vowels to Mandarin sentence intelligibility under conditions of spectral degradation
Title | Perceptual contribution of vowels to Mandarin sentence intelligibility under conditions of spectral degradation |
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Authors | |
Issue Date | 2014 |
Publisher | The University of Hong Kong (Pokfulam, Hong Kong) |
Citation | Wong, W. [黃惠筠]. (2014). Perceptual contribution of vowels to Mandarin sentence intelligibility under conditions of spectral degradation. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. |
Abstract | A recent study showed a vowel advantage over consonant to sentence intelligibility in Mandarin. Considering the fact that many important acoustic cues for sentence intelligibility are contained in the vowel segment, the present study investigated the effect of spectral degradation and its interaction effect with vowel duration on Mandarin vowel-only sentence intelligibility. Three types of spectrally degraded stimuli, including fundamental frequency flattened (F0F), sine-wave synthesized (SWS)and noise-vocoded(NV)vowel-only sentences, were generated. Different proportions of vowel centers were preserved by using a noise-replacement paradigm. Listening experiments showed that fundamental frequency contour only had a minimal effect to vowel-only sentence intelligibility, while harmonic cues had a more notable effect. Intelligibility of NV sentences was significantly lower than that of SWS sentences, suggesting other acoustic cues such as formant frequency information contribute to the vowel advantage when harmonic cues are discarded. Discarding vowel edges had a significantly negative effect on vowel-only sentence intelligibility under conditions of spectral degradation. The present study supports emphasis on the preservation of harmonic cues and vowel duration in speech processing strategies. |
Degree | Bachelor of Science in Speech and Hearing Sciences |
Subject | Vowels - Mandarin dialects Speech, Intelligibility of |
Dept/Program | Speech and Hearing Sciences |
Persistent Identifier | http://hdl.handle.net/10722/238945 |
HKU Library Item ID | b5806553 |
DC Field | Value | Language |
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dc.contributor.author | Wong, Wai-kwan | - |
dc.contributor.author | 黃惠筠 | - |
dc.date.accessioned | 2017-02-23T23:30:45Z | - |
dc.date.available | 2017-02-23T23:30:45Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Wong, W. [黃惠筠]. (2014). Perceptual contribution of vowels to Mandarin sentence intelligibility under conditions of spectral degradation. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. | - |
dc.identifier.uri | http://hdl.handle.net/10722/238945 | - |
dc.description.abstract | A recent study showed a vowel advantage over consonant to sentence intelligibility in Mandarin. Considering the fact that many important acoustic cues for sentence intelligibility are contained in the vowel segment, the present study investigated the effect of spectral degradation and its interaction effect with vowel duration on Mandarin vowel-only sentence intelligibility. Three types of spectrally degraded stimuli, including fundamental frequency flattened (F0F), sine-wave synthesized (SWS)and noise-vocoded(NV)vowel-only sentences, were generated. Different proportions of vowel centers were preserved by using a noise-replacement paradigm. Listening experiments showed that fundamental frequency contour only had a minimal effect to vowel-only sentence intelligibility, while harmonic cues had a more notable effect. Intelligibility of NV sentences was significantly lower than that of SWS sentences, suggesting other acoustic cues such as formant frequency information contribute to the vowel advantage when harmonic cues are discarded. Discarding vowel edges had a significantly negative effect on vowel-only sentence intelligibility under conditions of spectral degradation. The present study supports emphasis on the preservation of harmonic cues and vowel duration in speech processing strategies. | - |
dc.language | eng | - |
dc.publisher | The University of Hong Kong (Pokfulam, Hong Kong) | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.rights | The author retains all proprietary rights, (such as patent rights) and the right to use in future works. | - |
dc.subject.lcsh | Vowels - Mandarin dialects | - |
dc.subject.lcsh | Speech, Intelligibility of | - |
dc.title | Perceptual contribution of vowels to Mandarin sentence intelligibility under conditions of spectral degradation | - |
dc.type | UG_Thesis | - |
dc.identifier.hkul | b5806553 | - |
dc.description.thesisname | Bachelor of Science in Speech and Hearing Sciences | - |
dc.description.thesislevel | Bachelor | - |
dc.description.thesisdiscipline | Speech and Hearing Sciences | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.mmsid | 991020913499703414 | - |