An acoustic study of plosives production in Cantonese speakers with Parkinson's disease

Yiting Chen, Min Ney Wong, Crystal Tze Ying Chow, Xuan Wang, Yuhan Lin, Manwa Lawrence Ng, Shirley Y.Y. Pang

Research output: Unpublished conference presentation (presented paper, abstract, poster)PosterAcademic researchpeer-review

Abstract

Articulatory impairment, including consonant imprecision, has been widely studied in patients with Parkinson's disease (PD). However, acoustic investigation of articulatory impairment in Cantonese speakers with PD has been limited. The purpose of this study was to investigate the acoustic characteristics of plosives production in Cantonese speakers with PD. The participants comprised 17 Cantonese speakers with PD and 17 age- and gender-matched healthy controls (HC). Six Cantonese plosives /p, ph, t, th, k, kh/ followed by the vowel /a/ were produced at high-level tone (T1) in the context of word and sentence. All speech samples produced by PD patients were further divided into two subgroups: normal plosive production (PD-NP) and spirantized plosive production (PD-SP). Higher intensity ratio, shorter VOT and shorter closure duration during plosive production were found in both PD-NP and PD-SP subgroups when compared to the HC group. In addition, aspiration and context did affect the intensity ratio, VOT and closure duration while place of articulation only affected the VOT. Furthermore, it was found that the most commonly misarticulated plosives in Cantonese speakers with PD were bilabial stops, followed by alveolar and velar stops. This finding of spirantization of plosives is in agreement with previous studies.
Original languageEnglish
Pages2584
Number of pages1
DOIs
Publication statusPublished - 2 Dec 2021
EventThe 179th Meeting of the Acoustical Society of America: Acoustics Virtually Everywhere (AVE) - Virtually
Duration: 7 Dec 202011 Dec 2020
https://acousticalsociety.org/overview-ave/

Competition

CompetitionThe 179th Meeting of the Acoustical Society of America: Acoustics Virtually Everywhere (AVE)
Abbreviated titleASA Fall 2020 Annual Meeting
Period7/12/2011/12/20
Internet address

Keywords

  • Acoustic analysis
  • plosives
  • spirantization
  • Parkinson's disease
  • Cantonese

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