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Exploration Of Acoustic And Perceptual Predictors Of Speech Intelligibility In Speakers With Amyotrophic Lateral Sclerosis
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Book Synopsis Exploration of Acoustic and Perceptual Predictors of Speech Intelligibility in Speakers with Amyotrophic Lateral Sclerosis by : Robin A. Samlan
Download or read book Exploration of Acoustic and Perceptual Predictors of Speech Intelligibility in Speakers with Amyotrophic Lateral Sclerosis written by Robin A. Samlan and published by . This book was released on 1993 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acoustic Predictors of Speech Intelligibility in Cerebral Palsied-dysarthric Adults by : Beth M. Ansel
Download or read book Acoustic Predictors of Speech Intelligibility in Cerebral Palsied-dysarthric Adults written by Beth M. Ansel and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Acoustic Item-analysis of Speech Intelligibility by : Kate Elizabeth Bunton
Download or read book An Acoustic Item-analysis of Speech Intelligibility written by Kate Elizabeth Bunton and published by . This book was released on 1999 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of a Multi-talker Babble Noise on the Speech Intelligibility of Females with Amyotrophic Lateral Sclerosis by : Amy Lynn Schiltz
Download or read book The Effect of a Multi-talker Babble Noise on the Speech Intelligibility of Females with Amyotrophic Lateral Sclerosis written by Amy Lynn Schiltz and published by . This book was released on 1994 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acoustic Features of Impaired Articulation Due to Amyotrophic Lateral Sclerosis by : Rachelle Laura Horwitz-Martin
Download or read book Acoustic Features of Impaired Articulation Due to Amyotrophic Lateral Sclerosis written by Rachelle Laura Horwitz-Martin and published by . This book was released on 2017 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progressive bulbar motor deterioration resulting from amyotrophic lateral sclerosis (ALS) leads to speech impairment. Despite the devastating consequences of speech impairment to life quality, few options are available to objectively assess speech motor involvement. The overarching goal of this research was to derive objective measures of speech acoustics that can be used to support clinical decision making. To achieve this goal, we obtained 121 speech samples from 33 patients with ALS who repeated the phrase "Buy Bobby a puppy" five times in succession. In total, 342 acoustic features were semi-automatically extracted from each speech recording. Pearson correlations were computed between each feature and three metrics of overall speech severity: sentence intelligibility, speaking rate, and communication efficiency. The findings were grounded within a physiologic framework where acoustic features were grouped into one of three domains that when combined, were hypothesized to broadly characterize articulatory performance: articulatory specification, articulatory coupling, and articulatory consistency. To obtain the most accurate prediction of ALS with the features we extracted, we compared two machine learning algorithms: linear regression and random forest. In shuffle-split cross-validation, the strongest mean Pearson correlations we obtained between actual and predicted intelligibility, speaking rate, and communication efficiency were 0.67, 0.74, and 0.77, respectively (SD=0.077, 0.050, and 0.059, respectively). Of the three domains, the specificity features were the most strongly associated with intelligibility impairments (mean r=0.68), and coupling was the most strongly associated with slower speaking rate (mean r=0.73). Specificity and coupling yielded similar performances in communication efficiency prediction. Other contributions of this thesis are that it is the first to implement a framework of dysarthric speech in terms of three domains: specification, coupling, and consistency; the first to validate automated formant tracking in dysarthric speech; and the first to perform an in-depth investigation into physiologically-inspired acoustic features that describe articulatory impairments of patients with ALS. Novel findings include the presence of abnormal formant coupling patterns, which may suggest greater tonguejaw coupling, in patients with more severe dysarthria due to ALS. Areas of future research involve further feature discovery, improved analysis methods, and a deeper understanding of relations to articulatory kinematics.
Book Synopsis The Effect of Slow Speech on Tongue Movements & Acoustic Vowel Space Distance in Speakers with Amyotrophic Lateral Sclerosis by : Stephanie Entz
Download or read book The Effect of Slow Speech on Tongue Movements & Acoustic Vowel Space Distance in Speakers with Amyotrophic Lateral Sclerosis written by Stephanie Entz and published by . This book was released on 2013 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: With disease progression, the speech of talkers with Amyotrophic Lateral Sclerosis (ALS) becomes increasingly imprecise and unintelligible. Although speaking rate reduction is commonly used as a treatment approach to enhance speech intelligibility in these talkers, its effect on tongue movements and speech acoustics is not well understood. Thus, the purpose of this study was to determine how slow speech affects tongue excursions and speech acoustics in persons with ALS. Further, this study investigated how tongue excursions and speech acoustics differed between persons with ALS and healthy controls. Lastly, this study sought to determine how predictable tongue excursions are based on speech acoustics in persons with ALS. 3D electromagnetic articulography was used to capture tongue movements during speech in five talkers with ALS and five healthy controls. Tongue excursions and the vowel space distance during the production of the vowels /a/ and /i/ in the word "kite" embedded in the sentence "See a kite again" were measured during typical and slow speech. Results showed increased tongue excursions and acoustic vowel space in response to slow speech for persons with ALS and controls; however, the effect was larger in the control group than in the ALS group. These outcomes support the current clinical assumption that slow speech increases tongue excursions and expanded vowel space in persons with speech impairments due to ALS. Although tongue excursions tended to be slightly larger in persons with ALS than controls, vowel space tended to be smaller in persons with ALS than controls. These findings challenged the current assumption that a small vowel space indicate small tongue excursion. The predictability of change in tongue excursions based on change in speech acoustics in response to slow speech was much lower in persons with ALS than controls. Thus, acoustic measures should not be used to infer the underlying speech movements in persons with ALS.
Book Synopsis A Computational Model of the Relationship Between Speech Intelligibility and Speech Acoustics by : Yishan Jiao
Download or read book A Computational Model of the Relationship Between Speech Intelligibility and Speech Acoustics written by Yishan Jiao and published by . This book was released on 2019 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speech intelligibility measures how much a speaker can be understood by a listener. Traditional measures of intelligibility, such as word accuracy, are not sufficient to reveal the reasons of intelligibility degradation. This dissertation investigates the underlying sources of intelligibility degradations from both perspectives of the speaker and the listener. Segmental phoneme errors and suprasegmental lexical boundary errors are developed to reveal the perceptual strategies of the listener. A comprehensive set of automated acoustic measures are developed to quantify variations in the acoustic signal from three perceptual aspects, including articulation, prosody, and vocal quality. The developed measures have been validated on a dysarthric speech dataset with various severity degrees. Multiple regression analysis is employed to show the developed measures could predict perceptual ratings reliably. The relationship between the acoustic measures and the listening errors is investigated to show the interaction between speech production and perception. The hypothesize is that the segmental phoneme errors are mainly caused by the imprecise articulation, while the sprasegmental lexical boundary errors are due to the unreliable phonemic information as well as the abnormal rhythm and prosody patterns. To test the hypothesis, within-speaker variations are simulated in different speaking modes. Significant changes have been detected in both the acoustic signals and the listening errors. Results of the regression analysis support the hypothesis by showing that changes in the articulation-related acoustic features are important in predicting changes in listening phoneme errors, while changes in both of the articulation- and prosody-related features are important in predicting changes in lexical boundary errors. Moreover, significant correlation has been achieved in the cross-validation experiment, which indicates that it is possible to predict intelligibility variations from acoustic signal.
Book Synopsis Acoustics Predictors of Speech Intelligibility in Cerebral Palsied-dysarthric Adults by : Beth M. Ansel
Download or read book Acoustics Predictors of Speech Intelligibility in Cerebral Palsied-dysarthric Adults written by Beth M. Ansel and published by . This book was released on 1987 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Multiple Subsystem Approach to Predicting Speech Intelligibility Declines in Older Adults by : Jacob McKinley
Download or read book A Multiple Subsystem Approach to Predicting Speech Intelligibility Declines in Older Adults written by Jacob McKinley and published by . This book was released on 2017 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Given the significant impact of progressive dysarthrias on individuals' communication abilities and the increasing prevalence of progressive dysarthrias in the United States, it is becoming imperative to develop prediction models of speech intelligibility decline. As a first step, the present study focused on healthy older adults and specifically, on determining age-related effects on the respiratory, phonatory, and articulatory subsystems and their impact on speech intelligibility. For this purpose, we used a multiple subsystem approach similar to that used in the extant literature on cerebral palsy (Lee, Hustad, & Weismer, 2013) and amyotrophic lateral sclerosis (ALS; Rong et al., 2016). The aims of the present study were to (1) determine age-related changes to the respiratory, phonatory, and articulatory subsystems and (2) investigate whether speech intelligibility decline is observed in healthy older adults and if so, to determine which variables from each subsystem are predictive of intelligibility decline. Method: Fifteen healthy, older adults and fifteen younger adults participated in instrument-based assessments of the phonatory, respiratory, and articulatory subsystems. Respiratory, acoustic, aerodynamic, and kinematic measures were obtained during syllable, sentence, word, and nonspeech tasks. Speech intelligibility for each speaker was determined by naïve listeners during multi-talker babble. Contributions of selected subsystem variables on speech intelligibility were determined using a multiple linear regression analysis. Results: Age-related differences were detected across phonatory and articulatory subsystem measures including maximum phonation time and cepstral peak prominence (phonatory subsystem) and spatiotemporal variability index and maximum speed of tongue movements (articulatory subsystem). Selected variables in the phonatory and articulatory subsystem were significant predictors of speech intelligibility in older adults including laryngeal airway resistance (39%), airflow during voicing (35%), maximum phonation time (9%; phonatory subsystem) and duration (10%) and maximum speed (5%) of tongue movements (articulatory subsystem). Collectively, 98% of speech intelligibility variance in older adults could be explained by the phonatory (83%) and articulatory (15%) subsystem models. Discussion: Significant subsystem differences between older and younger adults were found indicating age-related speech decline. Measures representing phonatory and articulatory subsystems predicted speech intelligibility differences in older adults suggesting that age-related speech declines such as breathy voice quality and age-related articulatory slowing contributed to intelligibility decline. Subsystem measures were more sensitive to age-related speech differences in older adults than intelligibility, which is a finding consistent in ALS literature (Ball, Willis, Beukelman, & Pattee, 2001; Green et al., 2013).
Book Synopsis Acoustic Analysis of Voice in Amyotrophic Lateral Sclerosis Patients with Perceptually Normal Vocal Quality by : Alice Klain Silbergleit
Download or read book Acoustic Analysis of Voice in Amyotrophic Lateral Sclerosis Patients with Perceptually Normal Vocal Quality written by Alice Klain Silbergleit and published by . This book was released on 1993 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Acoustic Analysis of Speech by : Raymond D. Kent
Download or read book The Acoustic Analysis of Speech written by Raymond D. Kent and published by Singular. This book was released on 2002 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Acoustic Analysis Of Speech presents essential information on modern methods for the acoustic analysis of speech. It assumes only a modest technical background and is intended for the reader who wants to know the basic issues in speech analysis but does not have an extensive background in engineering, physics or mathematics. The book discusses the basic methods for the acoustic analysis of speech in relation to (a) the acoustic theory of speech production and (b) measures of primary interest to speech scientists, speech-language pathologists, linguists, psychologists or others who are interested in the acoustic signal of speech. Readers will gain an understanding of theory, methods and databases pertaining to speech acoustics. The book offers a simple and straightforward explanation of all aspects of acoustic analysis from recording the signal, to analysis methods, to sources of data on phonetic and suprasegmental aspects of speech. Includes reference to acoustic data for several languages in addition to English. The book is written at a general introductory level for course in Speech Science; Speech Acoustics; Experimental Phonetics and Laboratory Instrumentation for Speech and Hearing.
Book Synopsis Linguistics and Language Behavior Abstracts by :
Download or read book Linguistics and Language Behavior Abstracts written by and published by . This book was released on 2007-02 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Dysarthrias by : Malcolm Ray McNeil
Download or read book The Dysarthrias written by Malcolm Ray McNeil and published by . This book was released on 1984 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ending Parkinson's Disease by : Ray Dorsey
Download or read book Ending Parkinson's Disease written by Ray Dorsey and published by PublicAffairs. This book was released on 2020-03-17 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this "must-read" guide (Lonnie Ali), four leading doctors and advocates offer a bold action plan to prevent, care for, and treat Parkinson's disease-one of the great health challenges of our time. Brain diseases are now the world's leading source of disability. The fastest growing of these is Parkinson's: the number of impacted patients has doubled to more than six million over the last twenty-five years and is projected to double again by 2040. Harmful pesticides that increase the risk of Parkinson's continue to proliferate, many people remain undiagnosed and untreated, research funding stagnates, and the most effective treatment is now a half century old. In Ending Parkinson's Disease, four top experts provide a plan to help prevent Parkinson's, improve care and treatment, and end the silence associated with this devastating disease.
Book Synopsis The Handbook of Language and Speech Disorders by : Nicole Müller
Download or read book The Handbook of Language and Speech Disorders written by Nicole Müller and published by John Wiley & Sons. This book was released on 2012-07-10 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Speech and Language Disorders presents a comprehensive survey of the latest research in communication disorders. Contributions from leading experts explore current issues, landmark studies, and the main topics in the field, and include relevant information on analytical methods and assessment. A series of foundational chapters covers a variety of important general principles irrespective of specific disorders. These chapters focus on such topics as classification, diversity considerations, intelligibility, the impact of genetic syndromes, and principles of assessment and intervention. Other chapters cover a wide range of language, speech, and cognitive/intellectual disorders.
Book Synopsis Speech Motor Control by : Ben Maassen
Download or read book Speech Motor Control written by Ben Maassen and published by Oxford University Press. This book was released on 2010-02-25 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest theoretical developments in the area of speech motor control, offering new insights by leading scientists and clinicians into speech disorders. The scope of this book is broad, presenting research in the areas of modelling, genetics, brain imaging, behavioral experimentation, and clinical applications.
Book Synopsis The Behavioral and Cognitive Neurology of Stroke by : Olivier Godefroy
Download or read book The Behavioral and Cognitive Neurology of Stroke written by Olivier Godefroy and published by Cambridge University Press. This book was released on 2007-01-18 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: The care of stroke patients has changed dramatically. As well as improvements in the emergency care of the condition, there have been marked advances in our understanding, management and rehabilitation of residual deficits. This book is about the care of stroke patients, focusing on behavioural and cognitive problems. It provides a comprehensive review of the field covering the diagnostic value of these conditions, in the acute and later phases, their requirements in terms of treatment and management and the likelihood and significance of long-term disability. This book will appeal to all clinicians involved in the care of stroke patients, as well as to neuropsychologists, other rehabilitation therapists and research scientists investigating the underlying neuroscience.
