scholarly journals Aerodynamic Characteristics of Voice Disorders (Polyp, Cyst) before and after Laryngeal Micro Surgery: Focus on Running Speech

2019 ◽  
Vol 30 (2) ◽  
pp. 95-100
Author(s):  
Tae-Hoon Moon ◽  
Mi-Ran Shim ◽  
Yeon-Shin Hwang ◽  
Geun-Jeon Kim ◽  
Dong-Hyeon Lee ◽  
...  
Keyword(s):  
Voice Disorders ◽  
Aerodynamic Characteristics ◽  
Before And After ◽  
Micro Surgery

Interaction of Speech Coders and Atypical Speech II

2002 ◽  
Vol 45 (4) ◽  
pp. 689-699 ◽  
Author(s):  
Donald G. Jamieson ◽  
Vijay Parsa ◽  
Moneca C. Price ◽  
James Till
Keyword(s):  
Communication Systems ◽  
Speech Rate ◽  
Voice Quality ◽  
Voice Disorders ◽  
Normal Hearing ◽  
Speech Quality ◽  
Degraded Speech ◽  
Before And After ◽  
Subband Processing

We investigated how standard speech coders, currently used in modern communication systems, affect the quality of the speech of persons who have common speech and voice disorders. Three standardized speech coders (GSM 6.10 RPELTP, FS1016 CELP, and FS1015 LPC) and two speech coders based on subband processing were evaluated for their performance. Coder effects were assessed by measuring the quality of speech samples both before and after processing by the speech coders. Speech quality was rated by 10 listeners with normal hearing on 28 different scales representing pitch and loudness changes, speech rate, laryngeal and resonatory dysfunction, and coder-induced distortions. Results showed that (a) nine scale items were consistently and reliably rated by the listeners; (b) all coders degraded speech quality on these nine scales, with the GSM and CELP coders providing the better quality speech; and (c) interactions between coders and individual voices did occur on several voice quality scales.

scholarly journals Effects of Vocal Training on Students’ Voices in a Professional Drama School

OTO Open ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 2473974X1986638
Author(s):  
Jacob I. Tower ◽  
Lynn Acton ◽  
Jessica Wolf ◽  
Walton Wilson ◽  
Nwanmegha Young
Keyword(s):  
Fundamental Frequency ◽  
Aerodynamic Characteristics ◽  
Voice Handicap Index ◽  
First Year ◽  
Medical Facility ◽  
Acoustic Measures ◽  
Vocal Training ◽  
Before And After ◽  
Changes Over Time ◽  
Over Time

Objective The purpose of this study was to investigate the effect of vocal training on acoustic and aerodynamic characteristics of student actors’ voices. Study Design Prospective cohort study. Setting Tertiary medical facility speech and swallow center. Subjects and Methods Acoustic, aerodynamic, and Voice Handicap Index–10 measures were collected from 14 first-year graduate-level drama students before and after a standard vocal training program and analyzed for changes over time. Results Among the aerodynamic measures that were collected, mean expiratory airflow was significantly reduced after vocal training. Among the acoustic measures that were collected, mean fundamental frequency was significantly increased after vocal training. On average, Voice Handicap Index–10 scores were unchanged after vocal training. Conclusion The cohort of drama students undergoing vocal training demonstrated improvements in voice aerodynamics, which indicate enhanced glottal efficiency after training. The present study also found an increased average fundamental frequency among the actors during sustained voicing and no changes in jitter and shimmer despite frequent performance.

Treatment Efficacy

1998 ◽  
Vol 41 (1) ◽  
Author(s):  
Lorraine Olson Ramig ◽  
Katherine Verdolini
Keyword(s):  
Medical Treatment ◽  
Voice Disorders ◽  
Voice Disorder ◽  
Future Research ◽  
Vocal Health ◽  
Physical Conditions ◽  
Voice Treatment ◽  
Before And After ◽  
The Voice

This article reviews the literature on the efficacy of treatment for voice disorders primarily using studies published in peer-reviewed journals. Voice disorders are defined, their frequency of occurrence across the life span is reported, and their impact on the lives of individuals with voice disorders is documented. The goal of voice treatment is to maximize vocal effectiveness given the existing disorder and to reduce the handicapping effect of the voice problem. Voice treatment may be (a) the preferred treatment to resolve the voice disorder when medical (surgical or pharmacological) treatments are not indicated; (b) the initial treatment in cases where medical treatment appears indicated; it may obviate the need for medical treatment; (c) completed before and after surgical treatment to maximize long-term post-surgical voice; and (d) a preventative treatment to preserve vocal health. Experimental and clinical data are reviewed that support these roles applied to various disorder types: (a) vocal misuse, hyperfunction and muscular imbalance (frequently resulting in edema, vocal nodules, polyps or contact ulcers); (b) medical or physical conditions (e.g., laryngeal nerve trauma, Parkinson disease); and (c) psychogenic disorders (e.g., conversion reactions, personality disorders). Directions for future research are suggested which maximize clinical outcomes and scientific rigor to enhance knowledge on the efficacy of voice treatment.

scholarly journals A Comparison of Quality of Life in Adults With Voice Disorders Before and After Voice Therapy

2019 ◽  
Vol 42 (2) ◽  
pp. 30-37
Author(s):  
Tipwaree Aueworakhunanan ◽  
Kalyanee Makarabhirom ◽  
Dechavudh Nityasuddhi
Keyword(s):  
Quality Of Life ◽  
Acoustic Analysis ◽  
Voice Quality ◽  
Voice Disorders ◽  
Voice Handicap Index ◽  
Voice Therapy ◽  
Therapy Program ◽  
Before And After ◽  
The Voice

Background: Previous studies have documented the effectiveness of voice therapy in terms of voice quality outcomes rather than quality of life outcomes. Objective: To compare the quality of life among patients with voice disorders, before and after voice therapy. Methods: Thirty-six patients with voice disorders who visited the Speech Clinic at Ramathibodi Hospital from March 2013 to January 2015 were enrolled. Thirty minutes per session within 10 weeks period of voice therapy program were used. The voice therapy approaches included direct and indirect therapy. The outcomes of this study were measured using Dr. Speech software version 5 for acoustic analysis and the Voice Handicap Index in Thai version for quality of life. Data was analyzed by descriptive and inferential statistics (Paired t test). Results: The total participants were 36 patients with a mean age of 51.31 years. They were divided to 4 groups according to the causes of voice disorders that were 18 patients for structural cause, 8 patients for functional cause, 6 patients for neurological cause, and 4 patients for inflammatory cause. The results for both voice quality and quality of life after voice therapy improved and showed statistically significant differences (P < .05). The patients with all causes of voice disorders were statistically significant differences in total the Voice Handicap Index scores (P < .05). Moreover the structural causes group exhibited statistically significant differences in all subscales (P < .05) but the others causes groups were not statistically significant differences in emotional subscale for functional causes, physical subscale for neurological causes, and functional subscale for inflammatory cause (P > .05) Conclusions: Voice therapy might be an effective treatment to decrease the severity of voice disorders in role of voice quality and quality of life, especially voice disorders from structural causes.

Research on Aerodynamic Characteristics of Morphing Aircraft with a Telescopic Wing

2013 ◽  
Vol 709 ◽  
pp. 257-261
Author(s):  
Xi You Zhao ◽  
Jun Hu
Keyword(s):  
Numerical Calculation ◽  
High Speed ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Performance ◽  
Aerodynamic Coefficient ◽  
Morphing Aircraft ◽  
Task Requirements ◽  
Before And After ◽  
Relationship Of ◽  
The Relationship

A kind of morphing aircraft based on the concept of telescopic wing was designed in this paper. With the numerical calculation, it compared the aerodynamic characteristics before and after the morphing of the aircraft, and analyzed the relationship of the aircraft aerodynamic coefficient to its length, angle of attack and flight Mach number. The result showed that through morphing the movable wing, the aircraft can significantly change the lift, drag and other aerodynamic characteristics; the morphing aircraft can satisfy the dual task requirements of low-speed cruise and high-speed attack. Compared with the traditional aircraft in fixed shape, it had a better aerodynamic performance.

scholarly journals The Effectiveness of Rehabilitation of Occupational Voice Disorders in a Health Resort Hospital Environment

2021 ◽  
Vol 10 (12) ◽  
pp. 2581
Author(s):  
Anna Sinkiewicz ◽  
Agnieszka Garstecka ◽  
Hanna Mackiewicz-Nartowicz ◽  
Lidia Nawrocka ◽  
Wioletta Wojciechowska ◽  
...  
Keyword(s):  
Voice Disorders ◽  
Rehabilitation Program ◽  
Self Report ◽  
Hospital Environment ◽  
Health Resort ◽  
Self Assessment ◽  
Maximum Phonation Time ◽  
Perceptual Evaluation ◽  
Before And After ◽  
Time Assessment

Background: The aim of this study was to present a rehabilitation program of occupational voice disorders for teachers, conducted in the form of health resort stays, and evaluate its effectiveness depending on job seniority. Methods: The study included 420 teachers who participated in a complex vocal prophylactic and rehabilitation program carried out during a 24-day stay at a health resort hospital. Employment time varied from 4 to 45 years (mean 28.3 years). The participants were divided into three groups: employment time < 21 years (57 teachers), 21–30 years (182 teachers) and > 30 years (181 teachers). All of the subjects underwent maximum phonation time assessment as well as jitter, shimmer and NHR (noise to harmonic ratio) parameters assessment before and after the program; they also underwent perceptual evaluation using the GRBAS scale and voice self-assessment using the VHI-30 scale. Results: The perceptual evaluation using the GRBAS scale and self-report measures of voice function assessed using the VHI scale revealed improvement (p < 0.001). The parameters of jitter, shimmer and NHR improved significantly: jitter p < 0.001, shimmer p < 0.001 and NHR p < 0.003. Maximum phonation time increased slightly but significantly (p < 0.001). For all of the studied groups regardless of their employment time, maximum phonation time increased (p < 0.001). Initially, the lowest values of maximum phonation time were observed in teachers with longer job seniority, which improved after the rehabilitation but remained <15 s. Conclusions: Voice care for teachers is crucial regardless of their job seniority. Early prophylaxis for voice disorders is effective, as the results of rehabilitation are better in teachers with a shorter employment time.

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