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https://www.readbyqxmd.com/read/29184336/speech-signal-analysis-and-pattern-recognition-in-diagnosis-of-dysarthria
#1
Minu George Thoppil, C Santhosh Kumar, Anand Kumar, John Amose
Background: Dysarthria refers to a group of disorders resulting from disturbances in muscular control over the speech mechanism due to damage of central or peripheral nervous system. There is wide subjective variability in assessment of dysarthria between different clinicians. In our study, we tried to identify a pattern among types of dysarthria by acoustic analysis and to prevent intersubject variability. Objectives: (1) Pattern recognition among types of dysarthria with software tool and to compare with normal subjects...
October 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/29165085/a-speech-recognition-based-solution-for-the-automatic-detection-of-mild-cognitive-impairment-from-spontaneous-speech
#2
Laszlo Toth, Ildiko Hoffmann, Gabor Gosztolya, Veronika Vincze, Greta Szatloczki, Zoltan Banreti, Magdolna Pakaski, Janos Kalman
BACKGROUND: Even today the reliable diagnosis of the prodromal stages of Alzheimer's disease (AD) remains a great challenge. Our research focuses on the earliest detectable indicators of cognitive decline in mild cognitive impairment (MCI). Since the presence of language impairment has been reported even in the mild stage of AD, the aim of this study is to develop a sensitive neuropsychological screening method which is based on the analysis of spontaneous speech production during performing a memory task...
November 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29104329/voice-onset-time-vot-at-50-theoretical-and-practical-issues-in-measuring-voicing-distinctions
#3
Arthur S Abramson, D H Whalen
Just over fifty years ago, Lisker and Abramson proposed a straightforward measure of acoustic differences among stop consonants of different voicing categories, voice onset time (VOT). Since that time, hundreds of studies have used this method. Here, we review the original definition of VOT, propose some extensions to the definition, and discuss some problematic cases. We propose a set of terms for the most important aspects of VOT and a set of Praat labels that could provide some consistency for future cross-study analyses...
July 2017: Journal of Phonetics
https://www.readbyqxmd.com/read/29097046/detection-of-voice-changes-due-to-aspiration-via-acoustic-voice-analysis
#4
Young Ae Kang, Jaeock Kim, Sung Ju Jee, Cheol Woo Jo, Bon Seok Koo
OBJECTIVE: Aspiration can occur during swallowing. The present study investigated the feasibility of identifying aspiration risk (AR) via acoustic voice parameters. MATERIALS AND METHODS: In total, 165 patients scheduled for a videofluoroscopic swallowing study (VFSS) were included. The patients were divided into two groups (AR and non-AR) based on their VFSS results. The AR group, which had ingested materials on or below the vocal folds, included 59 patients (42 males and 17 females)...
October 30, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29033256/acoustic-analysis-of-normal-voice-patterns-in-pakistani-adults
#5
Saira Ambreen, Nazia Bashir, Sharmeen Aslam Tarar, Rukhsana Kausar
This study was designed to find out normative acoustic measures of adults in Pakistan. Age and gender differences in these parameters were also studied. The study variables include fundamental frequency, absolute jitter, relative jitter, relative average perturbation, 5-point period perturbation quotient perturbation quotient, jitter average absolute difference between consecutive periods, divided by the average period, shimmer local, shimmer decibel, three-point amplitude perturbation quotient, five-point amplitude perturbation quotient, average absolute difference of consecutive differences between the consecutive periods' amplitudes, and harmonics-to-noise ratio...
October 12, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29033255/how-do-voice-perceptual-changes-predict-acoustic-parameters-in-persian-voice-patients
#6
Shamim Hosseinifar, Farhad Torabinezhad, Leila Ghelichi, Masoud Roudbari, Erin Pearson Silverman, Maryam Faham
INTRODUCTION: Perceptual and acoustic analyses are essential tools that help voice therapists comprehensively assess voice quality. While perceptual evaluations are subjective and are influenced by external and culturally driven factors, acoustic analysis is an objective and reliable means of evaluating voice. The goals of this study were (1) to determine which acoustic parameters were predicted by perceptual voice quality and (2) to assess the effect of a short period of training on the reliability of perceptual voice analyses for Persian speakers...
October 12, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29029830/responsiveness-of-persian-version-of-consensus-auditory-perceptual-evaluation-of-voice-cape-v-persian-version-of-voice-handicap-index-vhi-and-praat-in-vocal-mass-lesions-with-muscle-tension-dysphonia
#7
Hassan Khoramshahi, Ahmad Reza Khatoonabadi, Seyyedeh Maryam Khoddami, Peyman Dabirmoghaddam, Noureddin Nakhostin Ansari
OBJECTIVES: This study was aimed at determining the internal and external responsiveness of the Persian version of the Consensus Auditory-Perceptual Evaluation of Voice (called ATSHA), Persian version of the Voice Handicap Index (VHI), and Praat scales among patients with vocal mass lesions and secondary muscle tension dysphonia. STUDY DESIGN: Prospective, within-participant repeated measures. METHOD: Thirty patients with vocal fold nodules, polyps, and cysts related to secondary muscle tension dysphonia participated in the study...
October 10, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28965662/correlation-of-the-iranian-voice-quality-of-life-profile-ivqlp-with-acoustic-measurements-across-three-common-voice-disorders
#8
Ali Dehqan, Ronald C Scherer, Fariba Yadegari, Gholamali Dashti
OBJECTIVES: The Iranian Voice Quality of Life Profile (IVQLP) is a recent culture-based developed tool for assessing the quality of life of dysphonic patients. The research questions addressed here are as follows: (1) Are the correlations between IVQLP scores and values of objective voice measures? (2) Do the correlations differ across the three different voice disorders? METHODS: The subjects were divided into three groups: muscle tension dysphonia (MTD) (n = 62), benign midmembranous vocal fold lesions (n = 56), and unilateral vocal fold paralysis (UVFP) (n = 32)...
September 28, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28964276/a-comparison-of-speech-intonation-production-and-perception-abilities-of-farsi-speaking-cochlear-implanted-and-normal-hearing-children
#9
COMPARATIVE STUDY
Narges Moein, Seyyedeh Maryam Khoddami, Mohammad Rahim Shahbodaghi
INTRODUCTION: Cochlear implant prosthesis facilitates spoken language development and speech comprehension in children with severe-profound hearing loss. However, this prosthesis is limited in encoding information about fundamental frequency and pitch that are essentially for recognition of speech prosody. The purpose of the present study is to investigate the perception and production of intonation in cochlear implant children and comparison with normal hearing children. METHOD: This study carried out on 25 cochlear implanted children and 50 children with normal hearing...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28943107/analyses-of-sustained-vowels-in-down-syndrome-ds-a-case-study-using-spectrograms-and-perturbation-data-to-investigate-voice-quality-in-four-adults-with-ds
#10
Tracy Jeffery, Stuart Cunningham, Sandra P Whiteside
OBJECTIVES: Automatic acoustic measures of voice quality in people with Down syndrome (DS) do not reliably reflect perceived voice qualities. This study used acoustic data and visual spectral data to investigate the relationship between perceived voice qualities and acoustic measures. STUDY DESIGN: Participants were four young adults (two males, two females; mean age 23.8 years) with DS and severe learning disabilities, at least one of whom had a hearing impairment...
September 21, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28886973/vocal-tract-morphology-in-inhaling-singing-characteristics-during-vowel-production-a-case-study-in-a-professional-singer
#11
Mieke Moerman, Françoise Vanhecke, Lieven Van Assche, Johan Vercruysse
BACKGROUND: A professional singer produced various vowels on a comfortable loudness and pitch in an inspiratory and expiratory phonation manner. The present study investigates the morphological differences and tries to find a link with the acoustical characteristics. OBJECTIVES/HYPOTHESIS: We hypothesize that features, constantly present over all vowels, characterize inhaling phonation and that the formant frequencies reflect the morphological findings. STUDY DESIGN: A prospective case study was carried out...
September 5, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28878734/speech-and-voice-response-to-a-levodopa-challenge-in-late-stage-parkinson-s-disease
#12
Margherita Fabbri, Isabel Guimarães, Rita Cardoso, Miguel Coelho, Leonor Correia Guedes, Mario M Rosa, Catarina Godinho, Daisy Abreu, Nilza Gonçalves, Angelo Antonini, Joaquim J Ferreira
BACKGROUND: Parkinson's disease (PD) patients are affected by hypokinetic dysarthria, characterized by hypophonia and dysprosody, which worsens with disease progression. Levodopa's (l-dopa) effect on quality of speech is inconclusive; no data are currently available for late-stage PD (LSPD). OBJECTIVE: To assess the modifications of speech and voice in LSPD following an acute l-dopa challenge. METHOD: LSPD patients [Schwab and England score <50/Hoehn and Yahr stage >3 (MED ON)] performed several vocal tasks before and after an acute l-dopa challenge...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28867553/cepstral-analysis-of-normal-and-pathological-voice-in-spanish-adults-smoothed-cepstral-peak-prominence-in-sustained-vowels-versus-connected-speech
#13
Jonathan Delgado-Hernández, Nieves M León-Gómez, Laura M Izquierdo-Arteaga, Yanira Llanos-Fumero
INTRODUCTION AND OBJECTIVES: In recent years, the use of cepstral measures for acoustic evaluation of voice has increased. One of the most investigated parameters is smoothed cepstral peak prominence (CPPs). The objectives of this paper are to establish the usefulness of this acoustic measure in the objective evaluation of alterations of the voice in Spanish and to determine what type of voice sample (sustained vowels or connected speech) is the most sensitive in evaluating the severity of dysphonia...
August 31, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28714530/acoustic-changes-in-the-speech-of-children-with-cerebral-palsy-following-an-intensive-program-of-dysarthria-therapy
#14
Lindsay Pennington, Eftychia Lombardo, Nick Steen, Nick Miller
BACKGROUND: The speech intelligibility of children with dysarthria and cerebral palsy has been observed to increase following therapy focusing on respiration and phonation. AIMS: To determine if speech intelligibility change following intervention is associated with change in acoustic measures of voice. METHODS & PROCEDURES: We recorded 16 young people with cerebral palsy and dysarthria (nine girls; mean age 14 years, SD = 2; nine spastic type, two dyskinetic, four mixed; one Worster-Drought) producing speech in two conditions (single words, connected speech) twice before and twice after therapy focusing on respiration, phonation and rate...
July 17, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/28712601/the-effects-of-uvulopalatal-flap-operation-on-speech-nasalance-and-the-acoustic-parameters-of-the-final-nasal-consonants
#15
Soo Kyoung Park, Yong Soo Lee, Young Ae Kang, Jun Xu, Ki Sang Rha, Yong Min Kim
OBJECTIVE: The acoustic characteristics of voice are determined by the source of the sound and shape of the vocal tract. Various anatomical changes after uvulopalatal flap (UPF) operation can change nasalance and/or other voice characteristics. Our aim was to explore the possible effects of UPF creation on speech nasalance and the resonatory features of the final nasal consonants, and thus voice characteristics. METHODS: A total of 30 patients (26 males, 4 females) with obstructive sleep apnea who underwent UPF operation were recruited...
July 13, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28554825/contact-quotient-of-female-singers-singing-four-pitches-for-five-vowels-in-normal-and-pressed-phonations
#16
Kendrich Graemer Ong Tan
OBJECTIVES: The present study aimed to investigate the contact quotient (CQ) values of breathy, normal, and pressed phonation types in four different sections of the female singing range. METHODS: Electroglottography (EGG) and acoustic signals were recorded from 10 female singing teachers. Five vowels were sung for 1-3 seconds each, in three phonation types-normal, breathy, and pressed, in four pitches representing registration change points in the singing range...
May 26, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28545946/body-mass-index-and-acoustic-voice-parameters-is-there-a-relationship
#17
Lourdes Bernadete Rocha de Souza, Marquiony Marques Dos Santos
INTRODUCTION: Specific elements such as weight and body volume can interfere in voice production and consequently in its acoustic parameters, which is why it is important for the clinician to be aware of these relationships. OBJECTIVE: To investigate the relationship between body mass index and the average acoustic voice parameters. METHODS: Observational, cross-sectional descriptive study. The sample consisted of 84 women, aged between 18 and 40years, an average of 26...
May 6, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28528786/acoustic-perturbation-measures-improve-with-increasing-vocal-intensity-in-individuals-with-and-without-voice-disorders
#18
M Brockmann-Bauser, J E Bohlender, D D Mehta
OBJECTIVE: In vocally healthy children and adults, speaking voice loudness differences can significantly confound acoustic perturbation measurements. This study examines the effects of voice sound pressure level (SPL) on jitter, shimmer, and harmonics-to-noise ratio (HNR) in adults with voice disorders and a control group with normal vocal status. STUDY DESIGN: This is a matched case-control study. METHODS: We assessed 58 adult female voice patients matched according to approximate age and occupation with 58 vocally healthy women...
May 18, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28403279/acoustic-analysis-of-speech-intonation-pattern-of-individuals-with-autism-spectrum-disorders
#19
Ana Gabriela Olivati, Francisco Baptista Assumpção, Andréa Regina Nunes Misquiatti
Purpose: This study aimed to analyze prosodic elements of speech segments of students with Autism Spectrum Disorders (ASD) and compare with the control group, using an acoustic analysis. Methods: Speech recordings were performed with a sample of individuals with ASD (n = 19) and with typical development (n = 19) of the male gender, age range: 8-33 years. The prosody questionnaire ALIB (Brazilian Linguistic Atlas) was used as script, which contains interrogative, affirmative and imperative sentences...
April 10, 2017: CoDAS
https://www.readbyqxmd.com/read/28317356/-effects-of-hawley-retainer-and-vacuum-formed-retainer-on-articulation-of-chinese-speech-of-adult-orthodontic-patients-a-randomized-controlled-trial
#20
RANDOMIZED CONTROLLED TRIAL
Wan Jia, You Lun, Chen Junyu, Chen Zhiqiang, Wang Tong
OBJECTIVE: This study investigated the influence of Hawley retainer and vacuum-formed retainer on the articu-lation of Chinese speech of adult orthodontic patients. METHODS: A total of 20 volunteers were recruited in this randomized controlled trial in accordance with the inclusion criteria. Participants were randomly distributed into two groups, namely, the Hawley retainer group and the vacuum-formed retainer group. Speech performance was evaluated at the following time inter-vals: before wearing retainers (T0), immediately after wearing both upper and lower retainers (T1), 24 h later (T2), 1 week later (T3), and 1 month later (T4)...
August 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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