Fundamental Frequency as a Perceptual Cue for Vowel Identification in Speakers with Parkinson’s Disease

Bunton, Kate

doi:10.1159/000094567

Cited by 24 publications

(20 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Intelligibility is a complex construct reflecting at minimum the combined influence of segmental, suprasegmental, linguistic and listener variables. F 0 -or prosodic variation -appears to interact with segmental integrity to impact on intelligibility in ways that are only beginning to be understood [e.g., 6,9 ]. A variety of studies suggest that a slower-than-normal articulatory rate and increased vocal loudness may impact segmental characteristics in dysarthria.…”

Section: Discussionmentioning

confidence: 99%

“…Phrases for which the intonation contour had been flattened were less intelligible compared to the original phrases for which the F 0 contour was unaltered. Relatedly, Bunton [9] explored the contribution of F 0 to vowel identity for speakers with Parkinson's disease (PD) and healthy controls. Speech resynthesis was used to flatten or enhance F 0 contours.…”

Section: Introductionmentioning

confidence: 99%

“…As illustrated by Bunton [9] , one approach to investigating the contribution of F 0 to intelligibility in dysarthria is to manipulate F 0 using speech resynthesis [3,9,10] . These types of controlled studies have yielded much valuable information, but it also would seem important to pursue parallel studies investigating the extent to which speakers with dysarthria actually produce the kinds of F 0 adjustments that have been linked to intelligibility in studies employing speech resynthesis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Impact of Rate Reduction and Increased Loudness on Fundamental Frequency Characteristics in Dysarthria

Tjaden¹,

Wilding

2010

Folia Phoniatr Logop

View full text Add to dashboard Cite

Objective: This study examined the extent to which articulatory rate reduction and increased loudness were associated with adjustments in utterance-level measures of fundamental frequency (F₀) variability for speakers with dysarthria and healthy controls that have been shown to impact on intelligibility in previously published studies. More generally, the current study sought to compare and contrast how a slower-than-normal rate and increased vocal loudness impact on a variety of utterance-level F₀ characteristics for speakers with dysarthria and healthy controls. Patients and Methods: Eleven speakers with Parkinson’s disease, 15 speakers with multiple sclerosis, and 14 healthy control speakers were audio recorded while reading a passage in habitual, loud, and slow conditions. Magnitude production was used to elicit variations in rate and loudness. Acoustic measures of duration, intensity and F₀ were obtained. Results and Conclusions: For all speaker groups, a slower-than-normal articulatory rate and increased vocal loudness had distinct effects on F₀ relative to the habitual condition, including a tendency for measures of F₀ variation to be greater in the loud condition and reduced in the slow condition. These results suggest implications for the treatment of dysarthria.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Impact of Rate Reduction and Increased Loudness on Fundamental Frequency Characteristics in Dysarthria

Tjaden¹,

Wilding

2010

Folia Phoniatr Logop

View full text Add to dashboard Cite

show abstract

“…However, this result is not surprising, as the primary cues for vowel recognition are manifested by a well-defined formant structure (Stevens, 1998a). Furthermore, the vowel tokens were spoken by a normal talker and did not contain any superimposed suprasegmental cues, such as stress or intonation where the T F0-env signal may have helped (Bunton, 2006;Ladefoged, 1982). It should be noted that the T F0-env signal extracted for the present study contains information not only about pitch variations, but also the onset/offset timing of the talker's voice and amplitude envelope in the F0 range.…”

Section: A Effect Of Residual Acoustic Hearing On CI Vowel Perceptionmentioning

confidence: 99%

The relative phonetic contributions of a cochlear implant and residual acoustic hearing to bimodal speech perception

Sheffield

Zeng

2012

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The addition of low-passed (LP) speech or even a tone following the fundamental frequency (F0) of speech has been shown to benefit speech recognition for cochlear implant (CI) users with residual acoustic hearing. The mechanisms underlying this benefit are still unclear. In this study, eight bimodal subjects (CI users with acoustic hearing in the non-implanted ear) and eight simulated bimodal subjects (using vocoded and LP speech) were tested on vowel and consonant recognition to determine the relative contributions of acoustic and phonetic cues, including F0, to the bimodal benefit. Several listening conditions were tested (CI/Vocoder, LP, T F0-env , CI/Vocoder þ LP, CI/Vocoder þ T F0-env ). Compared with CI/Vocoder performance, LP significantly enhanced both consonant and vowel perception, whereas a tone following the F0 contour of target speech and modulated with an amplitude envelope of the maximum frequency of the F0 contour (T F0-env ) enhanced only consonant perception. Information transfer analysis revealed a dual mechanism in the bimodal benefit: The tone representing F0 provided voicing and manner information, whereas LP provided additional manner, place, and vowel formant information. The data in actual bimodal subjects also showed that the degree of the bimodal benefit depended on the cutoff and slope of residual acoustic hearing.

show abstract

“…Dysarthria studies to date have largely focused on the contribution of segmental variables to intelligibility. How segmental and suprasegmental variables interact to impact intelligibility is only beginning to be understood (e.g., Bunton, 2006; Spitzer et al, 2007). Importantly, rate modulation affords the opportunity for an examination of segmental and suprasegmental characteristics associated with variations in intelligibility (e.g.…”

Section: Introductionmentioning

confidence: 99%

Acoustic and perceptual correlates of faster-than-habitual speech produced by speakers with Parkinson's disease and multiple sclerosis

Kuo

Tjaden

Sussman

2014

Journal of Communication Disorders

View full text Add to dashboard Cite

Acoustic-perceptual characteristics of a faster-than-habitual rate (Fast condition) were examined for speakers with Parkinson's disease (PD) and Multiple Sclerosis (MS). Judgments of intelligibility for sentences produced at a habitual rate (Habitual condition) and at a faster-than-habitual rate (Fast condition) by 46 speakers with PD or MS as well as a group of 32 healthy speakers revealed that the Fast condition was, on average, associated with decreased intelligibility. However, some speakers' intelligibility did not decline. To further understand the acoustic characteristics of varied intelligibility in the Fast condition for speakers with dysarthria, a subgroup of speakers with PD or MS whose intelligibility did not decline in the Fast condition (No Decline group, n = 8) and a subgroup of speakers with significantly declined intelligibility (Decline group, n = 8) were compared. Acoustic measures of global speech timing, suprasegmental characteristics, and utterance-level segmental characteristics for vocalics were examined for the two subgroups. Results suggest acoustic contributions to intelligibility under rate modulation are complex. Potential clinical relevance and implications for the acoustic bases of intelligibility are discussed.

show abstract

Fundamental Frequency as a Perceptual Cue for Vowel Identification in Speakers with Parkinson’s Disease

Cited by 24 publications

References 68 publications

The Impact of Rate Reduction and Increased Loudness on Fundamental Frequency Characteristics in Dysarthria

The Impact of Rate Reduction and Increased Loudness on Fundamental Frequency Characteristics in Dysarthria

The relative phonetic contributions of a cochlear implant and residual acoustic hearing to bimodal speech perception

Acoustic and perceptual correlates of faster-than-habitual speech produced by speakers with Parkinson's disease and multiple sclerosis

Contact Info

Product

Resources

About