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https://www.readbyqxmd.com/read/27916330/epidemiology-of-voice-disorders-in-latvian-school-teachers
#1
Baiba Trinite
OBJECTIVES: The prevalence of voice disorders in the teacher population in Latvia has not been studied so far and this is the first epidemiological study whose goal is to investigate the prevalence of voice disorders and their risk factors in this professional group. METHODS: A wide cross-sectional study using stratified sampling methodology was implemented in the general education schools of Latvia. The self-administered voice risk factor questionnaire and the Voice Handicap Index were completed by 522 teachers...
December 1, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27914393/influence-of-vocal-tract-geometry-simplifications-on-the-numerical-simulation-of-vowel-sounds
#2
Marc Arnela, Saeed Dabbaghchian, Rémi Blandin, Oriol Guasch, Olov Engwall, Annemie Van Hirtum, Xavier Pelorson
For many years, the vocal tract shape has been approximated by one-dimensional (1D) area functions to study the production of voice. More recently, 3D approaches allow one to deal with the complex 3D vocal tract, although area-based 3D geometries of circular cross-section are still in use. However, little is known about the influence of performing such a simplification, and some alternatives may exist between these two extreme options. To this aim, several vocal tract geometry simplifications for vowels [ɑ], [i], and [u] are investigated in this work...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27912151/euclidean-distances-as-measures-of-speaker-similarity-including-identical-twin-pairs-a-forensic-investigation-using-source-and-filter-voice-characteristics
#3
Eugenia San Segundo, Athanasios Tsanas, Pedro Gómez-Vilda
There is a growing consensus that hybrid approaches are necessary for successful speaker characterization in Forensic Speaker Comparison (FSC); hence this study explores the forensic potential of voice features combining source and filter characteristics. The former relate to the action of the vocal folds while the latter reflect the geometry of the speaker's vocal tract. This set of features have been extracted from pause fillers, which are long enough for robust feature estimation while spontaneous enough to be extracted from voice samples in real forensic casework...
November 17, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27900487/lipoid-proteinosis-unveiled-by-oral-mucosal-lesions-a-comprehensive-analysis-of-137-cases
#4
Boaz Frenkel, Marilena Vered, Shlomo Taicher, Noam Yarom
OBJECTIVES: Lipoid proteinosis (LP) is a rare autosomal recessive disorder characterized by deposits of hyaline material within skin and mucous membranes of the upper aerodigestive tract, especially the vocal cords. We aimed to investigate possible associations between oral LP (oLP) manifestations and demographic data and extra-oral lesions. MATERIAL AND METHODS: Cases of oLP were collected following a systematic search of Medline's PubMed and Google Scholar (1948-2014)...
November 29, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27896423/long-term-outcomes-following%C3%A2-h-type-tracheoesophageal-fistula%C3%A2-repair-in-infants
#5
Augusto Zani, Luai Jamal, Giovanni Cobellis, Justyna M Wolinska, Samuel Fung, Evan J Propst, Priscilla P L Chiu, Agostino Pierro
PURPOSE: To evaluate outcomes following repair of H-type tracheoesophageal fistula (TEF). METHODS: Retrospective chart review of infants with H-type TEF treated at our institution between 2000 and 2014. Patient demographics, surgical management, and postoperative function were evaluated. RESULTS: Of the 268 patients with esophageal atresia/TEF treated at our center, 16 (6%) had an H-type TEF (10 males). Thirteen (81%) had associated anomalies...
November 28, 2016: Pediatric Surgery International
https://www.readbyqxmd.com/read/27876268/vocal-changes-accompanying-the-descent-of-the-larynx-during-ontogeny-from-neonates-to-adults-in-male-and-female-goitred-gazelles-gazella-subgutturosa
#6
Ilya A Volodin, Kseniya O Efremova, Roland Frey, Natalia V Soldatova, Elena V Volodina
The pronouncedly enlarged and descended larynx in male goitred gazelles (Gazella subgutturosa), Mongolian gazelles (Procapra gutturosa) and fallow deer (Dama dama) represents an interesting parallel to the 'Adam's apple' of human males. Goitred gazelles, as humans, are not born with a descended larynx. Therefore the sexual dimorphism of larynx size and position develops during ontogeny. In this study, the vocal ontogeny of male and female goitred gazelles was investigated across five age classes from neonates to adults...
September 12, 2016: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/27865877/cough-in-the-athlete-chest-guideline-and-expert-panel-report
#7
Louis-Philippe Boulet, Julie Turmel, Richard S Irwin
BACKGROUND: Cough is a common symptom experienced by athletes, particularly after exercise. We performed a systematic review to assess in this population: 1) the main etiologies of acute and recurrent cough, either exercise-induced or not; 2) how it is assessed; and 3) how cough is treated in this population. From the systematic review, suggestions for management were developed. METHOD: ology: This review was done according to the CHEST methodological guidelines and GRADE framework up to April 2015...
November 16, 2016: Chest
https://www.readbyqxmd.com/read/27859573/intra-and-inter-observer-reliability-estimates-for-identification-and-grading-of-upper-respiratory-tract-abnormalities-recorded-in-horses-at-rest-and-during-overground-endoscopy
#8
C L McGivney, J Sweeney, F David, J M O'Leary, E W Hill, L M Katz
BACKGROUND: Previous studies support good intra- and inter-observer agreements for endoscopic evaluation of various upper respiratory tract (URT) diseases in horses. However, these studies mainly assessed resting endoscopic examination videos and/or focussed on a single URT abnormality. OBJECTIVES: To estimate intra- and inter-observer agreement for identification and grading of all URT abnormalities from resting and overground endoscopy (OGE) videos of Thoroughbreds...
November 14, 2016: Equine Veterinary Journal
https://www.readbyqxmd.com/read/27849247/immediate-effects-of-the-semi-occluded-vocal-tract-exercise-with-laxvox%C3%A2-tube-in-singers
#9
Congeta Bruniere Xavier Fadel, Ana Paula Dassie-Leite, Rosane Sampaio Santos, Celso Gonçalves Dos Santos, Cláudio Antônio Sorondo Dias, Denise Jussara Sartori
Purpose: The purpose of this study was to analyze the immediate effects of the semi-occluded vocal tract exercise (SOVTE) using the LaxVox® tube in singers. Methods: Participants were 23 singers, classical singing students, aged 18 to 47 years (mean age = 27.2 years). First, data was collected through the application of a demographic questionnaire and the recording of sustained emission - vowel /ε/, counting 1-10, and a music section from the participants' current repertoire...
September 2016: CoDAS
https://www.readbyqxmd.com/read/27833745/advances-in-real-time-magnetic-resonance-imaging-of-the-vocal-tract-for-speech-science-and-technology-research
#10
Asterios Toutios, Shrikanth S Narayanan
Real-time magnetic resonance imaging (rtMRI) of the moving vocal tract during running speech production is an important emerging tool for speech production research providing dynamic information of a speaker's upper airway from the entire mid-sagittal plane or any other scan plane of interest. There have been several advances in the development of speech rtMRI and corresponding analysis tools, and their application to domains such as phonetics and phonological theory, articulatory modeling, and speaker characterization...
2016: APSIPA Transactions on Signal and Information Processing
https://www.readbyqxmd.com/read/27826938/using-leap-motion-to-investigate-the-emergence-of-structure-in-speech-and-language
#11
Kerem Eryilmaz, Hannah Little
 In evolutionary linguistics, experiments using artificial signal spaces are being used to investigate the emergenceof speech structure. These signal spaces need to be continuous, non-discretized spaces from which discrete unitsand patterns can emerge. They need to be dissimilar from-but comparable with-the vocal tract, in order tominimize interference from pre-existing linguistic knowledge, while informing us about language. This is a hardbalance to strike. This article outlines a new approach that uses the Leap Motion, an infrared controller that canconvert manual movement in 3d space into sound...
November 8, 2016: Behavior Research Methods
https://www.readbyqxmd.com/read/27816358/real-time-visual-feedback-of-airflow-in-voice-training-aerodynamic-properties-of-two-flow-ball-devices
#12
Filipa M B Lã, Greta Wistbacka, Pedro Amarante Andrade, Svante Granqvist
OBJECTIVES: Flow ball devices have been used as teaching tools to provide visual real-time feedback of airflow during singing. This study aims at exploring static back pressure and ball height as function of flow for two devices, marketed as flow ball and floating ball game. STUDY DESIGN: This is a comparative descriptive study. METHODS: A flow-driven vocal tract simulator was used to investigate the aerodynamic properties of these two devices, testing them for four different ball sizes...
November 2, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27816356/formant-tuning-and-feedback-in-the-male-passaggio
#13
Wim G J Ritzerfeld, Donald G Miller
It has been suggested that traversing the male (secondo) passaggio requires two important adjustments. When singing up the scale, first of all, the second harmonic (H2) needs to pass over the first formant (F1). After that, the timbre of the voice takes on a different, slightly "darker" quality. This is the pitch where, in singers' jargon, the voice reaches secondo passaggio. Above secondo passaggio, in the optimal arrangement, the second formant (F2) is tuned close to one of the higher harmonics, or, sometimes alternatively, the singer's formant cluster induces a dominant resonance in the approximate range of 2...
November 2, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27801867/towards-contactless-silent-speech-recognition-based-on-detection-of-active-and-visible-articulators-using-ir-uwb-radar
#14
Young Hoon Shin, Jiwon Seo
People with hearing or speaking disabilities are deprived of the benefits of conventional speech recognition technology because it is based on acoustic signals. Recent research has focused on silent speech recognition systems that are based on the motions of a speaker's vocal tract and articulators. Because most silent speech recognition systems use contact sensors that are very inconvenient to users or optical systems that are susceptible to environmental interference, a contactless and robust solution is hence required...
October 29, 2016: Sensors
https://www.readbyqxmd.com/read/27777057/perturbation-measurements-on-the-degree-of-naturalness-of-synthesized-vowels
#15
Rosiane Yamasaki, Arlindo Montagnoli, Emi Z Murano, Eloisa Gebrim, Adriana Hachiya, Jorge Vicente Lopes da Silva, Mara Behlau, Domingos Tsuji
OBJECTIVE: To determine the impact of jitter and shimmer on the degree of naturalness perception of synthesized vowels produced by acoustical simulation with glottal pulses (GP) and with solid model of the vocal tract (SMVT). STUDY DESIGN: Prospective study. METHODS: Synthesized vowels were produced in three steps: 1. Eighty GP were developed (20 with jitter, 20 with shimmer, 20 with jitter+shimmer, 20 without perturbation); 2. A SMVT was produced based on magnetic resonance imaging (MRI) from a woman during phonation-/ε/ and using rapid prototyping technology; 3...
October 21, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27768174/a-modeling-study-of-the-effects-of-vocal-tract-movement-duration-and-magnitude-on-the-f2-trajectory-in-cv-words
#16
Kimberly D Neely, Kate Bunton, Brad H Story
Purpose: This study used a computational vocal tract model to investigate the relationship of diphthong duration and vocal tract movement magnitude to measures of the F2 trajectory in CV words. Method: Three words (bough, boy, and buy) were simulated on the basis of an adult female vocal tract model, in which the model parameters were estimated from audio recordings of a female talker. Model parameters were then modified to generate 35 simulations of each word corresponding to 7 different durations and 5 movement magnitude settings...
October 20, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27708541/analysis-of-direct-simultaneous-measurement-of-glottal-airflow-velocity-subglottal-pressure-and-high-speed-imaging-using-flexible-transnasal-endoscope-in-a-human-subject
#17
Hideyuki Kataoka, Shiro Arii, Takahiro Fukuhara, Kazunori Fujiwara, Yasuomi Kunimoto, Kensaku Hasegawa, Hiromi Takeuchi
It is difficult to directly observe glottal airflow velocity just above the glottis due to sensor size requirements and limited accessibility. We developed a miniature hot-wire probe and flexible fiberscopic high-speed imaging system for human examinations. Simultaneous direct measurement of glottal airflow velocity, subglottal pressure, and vocal fold vibration was achieved in a patient who was treated with a T-tube for tracheal stenosis. Airflow velocity changes at the anterior midline of the vocal folds were synchronized with subglottal pressure changes during each phonation cycle...
September 2016: Yonago Acta Medica
https://www.readbyqxmd.com/read/27687571/volitional-exaggeration-of-body-size-through-fundamental-and-formant-frequency-modulation-in-humans
#18
Katarzyna Pisanski, Emanuel C Mora, Annette Pisanski, David Reby, Piotr Sorokowski, Tomasz Frackowiak, David R Feinberg
Several mammalian species scale their voice fundamental frequency (F0) and formant frequencies in competitive and mating contexts, reducing vocal tract and laryngeal allometry thereby exaggerating apparent body size. Although humans' rare capacity to volitionally modulate these same frequencies is thought to subserve articulated speech, the potential function of voice frequency modulation in human nonverbal communication remains largely unexplored. Here, the voices of 167 men and women from Canada, Cuba, and Poland were recorded in a baseline condition and while volitionally imitating a physically small and large body size...
September 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27662695/an-investigation-on-the-accuracy-of-truncated-dklt-representation-for-speaker-identification-with-short-sequences-of-speech-frames
#19
Giorgio Biagetti, Paolo Crippa, Laura Falaschetti, Simone Orcioni, Claudio Turchetti
Speaker identification plays a crucial role in biometric person identification as systems based on human speech are increasingly used for the recognition of people. Mel frequency cepstral coefficients (MFCCs) have been widely adopted for decades in speech processing to capture the speech-specific characteristics with a reduced dimensionality. However, although their ability to decorrelate the vocal source and the vocal tract filter make them suitable for speech recognition, they greatly mitigate the speaker variability, a specific characteristic that distinguishes different speakers...
September 19, 2016: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/27658337/effect-of-performance-time-of-the-semi-occluded-vocal-tract-exercises-in-dysphonic-children
#20
Lorena de Almeida Ramos, Ana Cristina Côrtes Gama
OBJECTIVE: This study aimed to verify the effects of execution time on auditory-perceptual and acoustic responses in children with dysphonia completing straw phonation exercises. STUDY DESIGN: A randomized, prospective, comparative intra-subject study design was used. METHODS: Twenty-seven children, ranging from 5 to 10 years of age, diagnosed with vocal cord nodules or cysts, were enrolled in the study. All subjects included in the Experimental Group were also included in the Control Group which involved complete voice rest...
September 19, 2016: Journal of Voice: Official Journal of the Voice Foundation
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