Acoustic Signs of Supraglottal Constriction in Pathological Voices
Author: Lin, E.; Ormond, T.; Hornibrook, J.; Henderson, N.
Publisher: University of Canterbury. Communication Disorders
Type: Conference poster
Link to this item using this URL: http://hdl.handle.net/10092/5150
Purpose: This study aims to identify the acoustic signs of supraglottal constriction and effects of some vocal manipulation techniques. It is hypothesized that some task-related acoustic contrasts would differ between voice patients with and without supraglottal constriction due to different vocal tract configurations. Method: Classified through videostroboscopic examinations, 30 participants were gender and age-matched to form two comparison groups (“constricted” and “non-constricted”), with five males and ten females in each group. Participants were asked to sustain a vowel (/a/ or /i/) for approximately three seconds in five tasks, including normal-pitch, low-pitch, high-pitch, /m/-onset (i.e., with the consonant /m/ preceding the vowel at normal pitch), and /h/-onset tasks. Acoustic signals were analyzed to extract measures from the mid-portion of the vowel. Results: The “constricted” group showed a lack of task-related contrasts on signal-to-noise ratio, singing power ratio, frequency of the second formant, and the amplitude difference between the first formant and the first harmonic. Conclusion: Further investigations are needed to assess the predictive power of the proposed task-based acoustic approach for detecting supraglottal constriction.
Subjects: Field of Research::20 - Language, Communication and Culture::2001 - Communication and Media Studies::200101 - Communication Studies, Field of Research::20 - Language, Communication and Culture::2004 - Linguistics
Citation: ["Lin, E., Ormond, T., Hornibrook, J., Henderson, N. (2010) Acoustic Signs of Supraglottal Constriction in Pathological Voices. Philadelphia, PA, USA: 2010 American Speech-Language-Hearing Association (ASHA) Convention, 18-20 Nov 2010."]