Listener Perception of Monopitch, Naturalness, and Intelligibility for Speakers With Parkinson's Disease

Anand, Supraja; Stepp, Cara E.

doi:10.1044/2015_jslhr-s-14-0243

Cited by 61 publications

(22 citation statements)

References 54 publications

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“…This may have implications for future software development and advances in the widely used computerized SIT. Last, other perceptual metrics, such as perception of monopitch and naturalness as well speech comprehension are gaining traction (Anand & Stepp, 2015;Fontan, Tardieu, Gaillard, Woisard, & Ruiz, 2015). Their relationship to various intelligibility metrics or tasks is worth further examination.…”

Section: Directions For Future Researchmentioning

confidence: 99%

Comparison of Intelligibility Measures for Adults With Parkinson's Disease, Adults With Multiple Sclerosis, and Healthy Controls

Stipancic

Tjaden

Wilding

2016

J Speech Lang Hear Res

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Purpose This study obtained judgments of sentence intelligibility using orthographic transcription for comparison with previously reported intelligibility judgments obtained using a visual analog scale (VAS) for individuals with Parkinson's disease and multiple sclerosis and healthy controls (K. Tjaden, J. E. Sussman, & G. E. Wilding, 2014). Method Speakers read Harvard sentences in habitual, clear, loud, and slow conditions. Sentence stimuli were equated for peak intensity and mixed with multitalker babble. A total of 50 listeners orthographically transcribed sentences. Procedures were identical to those for a VAS reported in Tjaden, Sussman, and Wilding (2014). Results The percent correct scores from transcription were significantly higher in magnitude than the VAS scores. Multivariate linear modeling indicated that the pattern of findings for transcription and VAS was virtually the same with respect to differences among groups and speaking conditions. Correlation analyses further indicated a moderately strong, positive relationship between the two metrics. The majority of these correlations were significant. Last, intrajudge and interjudge listener reliability metrics for the two intelligibility tasks were comparable. Conclusion Results suggest that there may be instances when the less time-consuming VAS task may be a viable substitute for an orthographic transcription task when documenting intelligibility in mild dysarthria.

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Section: Directions For Future Researchmentioning

confidence: 99%

Comparison of Intelligibility Measures for Adults With Parkinson's Disease, Adults With Multiple Sclerosis, and Healthy Controls

Stipancic

Tjaden

Wilding

2016

J Speech Lang Hear Res

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“…However, as mentioned previously, the majority of speakers with PD reported speech changes postdiagnosis and/or having received speech therapy postdiagnosis. Thus, the systematic study of a variety of speakers with PD, regardless of the degree of perceived dysarthria, should be considered in future studies (see also Anand & Stepp, 2015).…”

Section: Discussionmentioning

confidence: 99%

Clear Speech Variants: An Acoustic Study in Parkinson's Disease

Lam

Tjaden

2016

J Speech Lang Hear Res

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Purpose The authors investigated how different variants of clear speech affect segmental and suprasegmental acoustic measures of speech in speakers with Parkinson's disease and a healthy control group. Method A total of 14 participants with Parkinson's disease and 14 control participants served as speakers. Each speaker produced 18 different sentences selected from the Sentence Intelligibility Test (Yorkston & Beukelman, 1996). All speakers produced stimuli in 4 speaking conditions (habitual, clear, overenunciate, and hearing impaired). Segmental acoustic measures included vowel space area and first moment (M1) coefficient difference measures for consonant pairs. Second formant slope of diphthongs and measures of vowel and fricative durations were also obtained. Suprasegmental measures included fundamental frequency, sound pressure level, and articulation rate. Results For the majority of adjustments, all variants of clear speech instruction differed from the habitual condition. The overenunciate condition elicited the greatest magnitude of change for segmental measures (vowel space area, vowel durations) and the slowest articulation rates. The hearing impaired condition elicited the greatest fricative durations and suprasegmental adjustments (fundamental frequency, sound pressure level). Conclusions Findings have implications for a model of speech production for healthy speakers as well as for speakers with dysarthria. Findings also suggest that particular clear speech instructions may target distinct speech subsystems.

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“…Monopitch is the most common and deviant prosodic correlate in hypokinetic dysarthria [5,9,10]. Monopitch is manifestated as lack of normal pitch variability.…”

Section: Introductionmentioning

confidence: 99%

Prosodic and Segmental Correlates of Spontaneous Dutch Speech in Patients with Parkinson's Disease: A Pilot Study

Verkhodanova¹,

Coler²

2018

Speech Prosody 2018

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This study investigates the acoustic correlates of prosody and vowel articulation in Dutch individuals with Parkinson's Disease (PD). We compared prosodic and segmental acoustic measures in spontaneous monologues in PD patients to those in elderly healthy controls matched for age and gender. For the prosodic measurements of pitch variability, span and speech rate, we analysed fundamental frequency and intensity. For articulation measurements, the first two formants were calculated from Dutch corner vowels extracted from the speech signal. Results show a monopitch trend, reduced speech rate, centralization of the formant frequencies and reduced first formant variability in individuals with PD compared to control group.

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Listener Perception of Monopitch, Naturalness, and Intelligibility for Speakers With Parkinson's Disease

Cited by 61 publications

References 54 publications

Comparison of Intelligibility Measures for Adults With Parkinson's Disease, Adults With Multiple Sclerosis, and Healthy Controls

Comparison of Intelligibility Measures for Adults With Parkinson's Disease, Adults With Multiple Sclerosis, and Healthy Controls

Clear Speech Variants: An Acoustic Study in Parkinson's Disease

Prosodic and Segmental Correlates of Spontaneous Dutch Speech in Patients with Parkinson's Disease: A Pilot Study

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