Digital Commons Network^™

The Effect Of Different Warm-Up Durations On Subjective And Objective Measures Of Singing In Choral Singers Over The Age Of 55, Jeremy A. Chesman

MSU Graduate Theses

Choral singing is a popular activity in the United States. Choral singers are often encouraged to warm up vocally before they sing. Considering voice conditions, like presbyphonia, that can develop shortly after retirement, more research about vocal warm-ups is needed for those over the age of 55. This study assesses the effects of various durations of vocal warm-ups on subjective and objective measures of the singing voice using a within-groups design with randomized condition order. Nine participants performed vocal warm-ups for 0, 5, 10, and 15 minutes. A song sample was then recorded and sent to two expert raters who …

The Lived Experiences Of Transmasculine Speakers: A Phenomenological Investigation Of Vocal Quality And Function In Relation To Gender, Micah Wylie

Graduate Theses and Dissertations

The objective of this study was to learn how transmasculine individuals perceive the quality and function of their voices, and how those perceptions influence how they experience gender identity and communicate with others. This qualitative study adopted a hermeneutical phenomenological approach that involved using content analysis and thematic analysis to describe and interpret phenomena. This approach assumes that the researcher is not biased, but is a part of the world being studied and, therefore, understands the phenomenon by interpretive means. Saturation was achieved when all relevant information was introduced, and patterns of information had been identified. Sixteen interviews were conducted. …

Outcome Measures And Demographic Representation Of Voice Studies Of Transgender People: A Scoping Review, Rachel Anthony

Honors Projects

The LGBTQ+ population, specifically transgender individuals, tend to be overlooked in many healthcare services. One significant healthcare service is gender-affirming voice services, which is performed by a Speech-Language Pathologist. The purpose of this study is to perform a scoping review of voice production studies in transgender individuals with a focus on outcome measures and demographic characteristics. Search terms were identified and then applied across three different databases. The results of these databases were cross-checked for duplicates. A criterion was established, and studies were screened by reading the title, and abstract. Relevant articles were uploaded to RefWorks and lastly scanned by …

The Acoustic Effect Of Masks On Speech And Singing, Anna Birkemeier

Honors Projects

Objectives / Introduction:

Mask-wearing has become commonplace for the public during the SARS-CoV-2 (COVID-19) pandemic. This has caused communication difficulties such as muffled speech, causing a lowered speech intelligibility and worse audibility. The purpose of this study was to determine the acoustic filtering effects of various masks.

Methods / Study Design:

The acoustic effects of a surgical mask, a Singer’s Mask, and an N95 mask were obtained. A single subject spoke (and repeated) the vowels /a,i,u/ and the consonants /s, ∫/, and sang the vowels on G4 and C5 with and without the masks, respectively. Spectra of the vowels and …

Voice Therapy: Racial Disparities In Adherence And Clinically Significant Outcomes, Amber D. Burks

LSU Master's Theses

Voice therapy is evidence-based, behavioral intervention that can reduce functional and organic voice disorders. Despite its proven effectiveness, non-adherence to voice therapy is still an issue. Research shows that an estimated 65% of patients who initiate voice therapy drop out before reaching therapeutic goals. Voice therapy outcomes are largely dependent on patients’ adherence to treatment regimens, but there is limited information concerning factors that may be associated with voice therapy adherence and therapeutic outcomes for patients who successfully complete voice therapy.

The purpose of this study was to investigate which demographic factors could be associated with higher adherence rates to …

Lifting The Heavy Vocal Load: Slps And Their Vocal Habits, Sydney Sedlock

Murray State Theses and Dissertations

Novice speech-language pathologists (SLPs) are a vulnerable population that is at-risk for dysphonia. Previous literature has highlighted the high vocal-demand occupations of teaching and entertaining but there is minimal research to understand the prevalence of dysphonia in SLPs. The purpose of this investigation was to determine the prevalence of vocal fatigue and vocal loading in novice SLPs in western Kentucky to increase awareness of the vulnerability for dysphonia in this population. This investigation was descriptive in nature using a survey format and was sent to SLPs in the western Kentucky region. A total of 21 SLPs responded to the survey. …

Demonstrable Effect Of Vocal Changes On Singing Voices Of Post-Menopausal Women, Haley K. Griffith

Senior Honors Projects, 2020-current

There is little research concerning the impacts of menopause on the female singing voice, and few research studies examine any treatment methods or exercises to help sustain vocal quality throughout and after menopause. To determine areas in which more detailed studies could be completed, I completed a thorough literature review of current research studies that investigate relationships between menopause and the voice. Many studies examined vocal symptoms of menopause, such as a lowered fundamental frequency (F0) and decreased vocal quality. However, there exists no formally researched or published vocal exercises that help to mitigate these menopausal voice symptoms.

In response, …

The Effectiveness Of The Natural Ear On Adults Ability To Accurately Match Pitch, Kendra Nicole Rosales

Open Access Theses & Dissertations

Background: Many theories, such as oral motor, perceptual, and sensorimotor deficits, have been posited to explain inaccurate pitch matching abilities. The current study identifies with the sensorimotor deficit theory and found it to be the most plausible explanation for inaccurate singing abilities. The Natural Ear (NE) program was designed to process voice productions in real-time and filter out the discordant harmonics, allowing a person to hear only their F0.

Purpose: The purpose of this study was to examine the effectiveness of the Natural Ear program in increasing pitch matching accuracy in singers.

Methods: A total of 50 participants were included …

Voice Therapy Techniques In Combination With The Group Therapy Setting For Individuals With Parkinson’S Disease, Zoë E. Sommers

Williams Honors College, Honors Research Projects

This report aims to provide background information related to voicing in Parkinson’s Disease (PD), review the various therapeutic approaches used to benefit individuals diagnosed with PD, and examine how voice impairments affect the lives of individuals with PD. Specifically, therapy techniques focusing on voice and techniques applied in the group therapy setting will be reviewed. PD has a multitude of consequences on an individual’s life, and speech is an area that is greatly affected. This project will highlight some of the interventions that can positively impact the lives of those with Parkinson’s Disease and reflect on how the group therapy …

The Effects Of Dance Therapy On Voice In Patients With Parkinson's Disease In A Multicultural Population, Ivon N. Ramirez

Theses and Dissertations

Current literature suggests that dance therapy in individuals with Parkinson’s disease shows noticeable improvement in motor functions, for example gait and balance improvement. Additionally, patients with Parkinson’s disease who participate in dance therapy may perceive positive benefits on their quality of life. Therefore, it is believed that increases in core support and improvements in posture, as a result of dance therapy, will have effects on the voice in patients with PD.

This thesis pulls from literature supporting treatment approaches in the field of speech-language pathology for voice patients with Parkinson’s disease. The aim of this study was to evaluate the …

Changes In Fundamental Frequency Of Voice In A Group Of Transwomen Following Voice Modification Therapy, Emily Marquez

Open Access Theses & Dissertations

The term transgender refers to an individual that identifies with a gender that is different to the one given at birth. Individuals that are transgender experience conflict between the gender the individual identifies with and the sex they are born with. Individuals that are transgender may elect to go through a transition process so that their outward appearance is congruent with their gender identity. Part of the transition process may include voice modification therapy. Transgender individuals may seek voice modification therapy so that the outward appearance matches the voice. However, there is limited information regarding the efficacy of traditional voice …

The Role Of The Speech-Language Pathologist When Working With Clients Who Are Transgender: A Guide Of Gender Identity And Cultural Competency, Brett Welch

Theses and Dissertations

It is within the scope of practice of a speech-language pathologist to work with a client who is transgender for voice. However, regardless of the setting, a speech-language pathologist is likely to encounter a person who is transgender on their caseload. The American Speech-Language-Hearing Association mandates that all of its members be culturally competent when working with clients from different cultural backgrounds, including those from the lesbian, gay, bisexual, transgender, and queer community.

This thesis pulls from sociological, linguistic, and queer theory literature to provide an in-depth understanding of identity, gender, and transgender identity formation. With this nuanced understanding of …

Vocalization Subsystem Responses To A Temporarily Induced Unilateral Vocal Fold Paralysis, Daniel J. Croake

Theses and Dissertations--Rehabilitation Sciences

Healthy voicing is thought to be dependent on a dynamic balance of three interactive subsystems: respiration, phonation, and resonance. Theoretically, multiple patterns of subsystem interactions likely underlie healthy voice production; however surprisingly little quantitative data exists defining the nature of these subsystem production patterns and interactions across individuals.

The central aim of this study was to quantify the interactions of the vocalization subsystems in a non-perturbed and perturbed condition (induced unilateral vocal fold paralysis) in 10 vocally healthy participants. Respiratory inductance plethysmography, laryngeal aerodynamics, and acoustic formant data were used to measure the proportional contributions of, and changes to, the …

Speech Function In Persons With Parkinson's Disease: Effects Of Environment, Task And Treatment, Carrie E. Rountrey

Dissertations, 2014-2019

Parkinson’s Disease (PD) is a degenerative neurological disease affecting aspects of movement, including speech. Persons with PD are reported to have better speech functioning in the clinical setting than in the home setting, but this has not been quantified. New methodologies in ambulatory measures of speech are emerging that allow investigation of non-clinical settings.

The following questions are addressed: Is speech different between environments in PD and in healthy controls? Can clinical tasks predict speech behaviors in the home? Is treatment proven effective by measures in the home? What can we glean from methods of measurement of speech function in …

Acoustic Analysis Of Prolonged Vowels In Adolescents And Young Adults With Friedreich's Ataxia, Kaylea Hardin

Electronic Theses and Dissertations

This study employed spectral analyses for acoustic measures of sustained vowel productions from a group of 20 adolescents and young adults with Friedreich's Ataxia (FA) and compared findings with a group of 20 age-equivalent and gender-matched normal control participants. State-of-the art spectral analyses from the Analysis of Dysphonia in Speech and Voice (ADSV) program, developed for various voice disorders from Kay Elemetrics, were applied to initial 2 second sustained vowel segments of the vowels /a/, /i/, and /o/. Spectral analyses included averages and standard deviations of Cepstral Peak Prominence (CPP), Cepstral Peak Prominence Standard Deviation (CPP SD), Low/High Spectral Ratio …

Perceptual Analysis Of Prolonged Vowels In Adolescent And Young Adults With Friedreich's Ataxia, Tara Varsallone

Electronic Theses and Dissertations

The purpose of this study was to conduct perceptual analyses, using the initial two-second portions, of prolonged vowels /a/, /i/, and /o/. Two groups of adolescents and young adults were analyzed- one group consisting of 20 individuals with Friedreich's ataxia who were compared to 20 individuals with normal voice (control participants). A trained group of 10 graduate students listened to 132 vowel samples (3 vowels X 40 participants, + 12 samples (10%) for reliability purposes) for a total of 132 perceptual judgments. The students listened to the samples which were randomized onto Dell computers (Optiplex 755) and played through headphones …

A Preliminary Study Of The Articulatory And Acoustic Features Of Forward And Backward Tone Placement In Singing, Krista Wyllys

Masters Theses

A variety of terms exist for describing tone quality in singing, and voice scientists, voice therapists, teachers of singing, and students of singing use different terms to describe the same sound. One aspect of tone quality is tone placement. Teachers of singing often rely on imagery and imitation to elicit correct tone placement from students of singing. More concrete data about what produces forward and backward tone placement could supplement singing teachers’ current practice of using imagery and imitation to elicit a desirable tone quality. This study examined forward and backward tone placement to determine the articulatory gestures and acoustic …

Evaluation Of Motor Speech And Intervention Planning For Children With Autism, Marcil J. Boucher

Open Access Dissertations

Autism affects 1 in 88 children (Center for Disease Control, 2009), approximately 50% of whom will not develop speech (Seal & Bonvillian, 1997). Some researchers hypothesize that these difficulties in developing oral speech reflect underlying motor speech deficits (Prizant, 1996; Seal & Bonvillian, 1997; Szypulski, 2003; Andrianopoulos, Boucher, Velleman & colleagues 2007-2010). This investigation sought to identify the presence or absence of specific motor speech markers in ASD through an innovative best-practice protocol for assessing the speech, prosody, and voice quality of individuals with ASD.

The study focused on apraxic-like motor planning/programming features and dysarthric-like motor execution features in imitated, …

Aerodynamic And Acoustic Features Of Vocal Effort, Allison Rosenthal

Speech-Language Pathology - Theses

Many voice disorders are associated with an effortful voice; however, there have been very few studies that have examined the physiological changes that contribute to this sense of effort. Determining the factors that contribute to change in vocal effort may help clinicians to effectively target these variables when working with people with voice disorders so that voice improvement is accompanied by decreased vocal effort after treatment. Prior research has shown that alterations in aerodynamic and acoustic variables are often associated with voice disorders involving increased muscular effort, and change in these variables is correlated with abnormal voice qualities. The current …

Attitudes About Voice And Voice Therapy Among Transgender Individuals, Stefanie E. Hays

LSU Master's Theses

Due to increased interest in the area of voice problems and treatment among transgender individuals in recent years, a study about vocal experiences, vocal handicap, and participation in treatment methods among this population is needed. This study examined vocal handicap among transgender women, transgender men, and individuals identifying as a non-binary gender through an online questionnaire. The goals of the study were to compare vocal handicap between transgender men and women as well as those who had participated in voice therapy and those who had not. Another goal was to identify reasons among transgender individuals for not participating in voice …

Frequency Response Of Synthetic Vocal Fold Models With Linear And Nonlinear Material Properties, Stephanie M. Shaw

Theses and Dissertations

Previous studies have shown the importance of cricothyroid muscle activation in altering fundamental frequency in the human voice. Other studies have investigated the non-linear properties of vocal fold tissue and the impact of this non-linearity on frequency response. Several physical models of the vocal folds have been made for research purposes. However, all have been isotropic in nature with linear stress-strain properties. The purpose of this study was to create a physical model with non-linear stress-strain properties to investigate the frequency response of the model as cricothyroid muscle activation was simulated (in other words, as the vocal folds were stretched …

The Effects Of Intensive Lower Limb Training On The Speech Of Patients With Parkinson's Disease, Lauren Fjeldsted Allen

Theses and Dissertations

Research has documented the positive effects of physical therapy as a treatment for limb motor symptoms associated with Parkinson's disease (PD). Previous studies have shown that speech and voice measures can be reflective of overall cardiovascular health and fitness in young, middle-aged, and older adults. In healthy individuals, increased respiratory drive has been found to influence vocal function and speech articulation. The rationale for the present study was that improved lower limb function might lead to improvements in overall fitness, which then may influence speech in individuals with Parkinson's disease. To investigate this premise, 10 participants diagnosed with mild to …

Vocal Fold Vibratory Characteristics Pre And Post Phonosurgery Investigated By Stroboscopy, Brittany Anne Durand

LSU Master's Theses

The purpose of this study was to investigate voice audio perceptual outcomes and true vocal fold vibratory characteristics following surgery for removal of vocal fold polyp. The specific aims of this study were 1) to determine vocal fold vibratory changes following surgery and 2) to compare these changes to audio perceptual ratings and Voice Handicap Index (VHI) scores. It was hypothesized that significant vibratory changes would occur following surgery and that Voice Handicap Index scores and audio perception ratings would correlate 1 week before surgery, 1 week following surgery, and 1 month following surgery. The most improved structural, functional, and …

Effects Of The Menstrual Cycle On The Vibratory Characteristics Of The Vocal Folds, Aimee Michelle Bonnette

LSU Master's Theses

The purpose of this study was to obtain preliminary data on several factors that may influence the vibratory patterns of the vocal folds in addition to the hormonal fluctuations present during the menstrual cycle. These factors included patient reports of severity of reflux symptoms, severity of premenstrual symptoms, and severity of negative vocal hygiene behaviors prior to each evaluation. Ten subjects who did not experience complaints of their voice participated in the study. Data from four subjects who were not on birth control and four on birth control were analyzed for the first cycle, which included self-perception, acoustic analysis, and …

How Individuals With Parkinson's Disease Modify Their Speech In A Repetition For Clarification, Lynn Marie Watkins

Theses and Dissertations

The speech of individuals with Parkinson's disease (PD) is typically characterized as lacking in proper prosody because of its monopitch and monoloud quality, in addition to its reduced intensity. These qualities make it difficult for others to understand speakers with PD. The purpose of the current study was to identify what individuals with PD would do vocally, if anything at all, to improve speech production following a simulated misunderstanding of what they had just said. The study evaluated the performance of 5 individuals with PD and compared their performance to 5 age- and sex-matched controls. Specifically, measures of vocal intensity …

Speaking And Singing: How Speaking On One's Optimal Pitch Affects The Singing Voice, Cindy Hood

Honors Theses

The fields of vocal pedagogy and speech pathology are often thought to be completely separate entities. This misconception has existed for decades and continues to inhibit the vocal growth of the voice student. The student is not permitted to explore the benefits that could come from a combined application of the two fields of study. This is due to the fact that a large number of voice teachers refuse to acknowledge that the scientific study of speech pathology even remotely applies to the study of the ''singing" voice. Richard Miller ( 1986) states:

There is a breed of singing teacher …

Some Effects Of Cochlear Implant Use On Loudness Modulation, Carol F. Ross

Dissertations and Theses

In this study, five deaf individuals with cochlear implants were presented with noise that was manipulated systematically, to test the hypothesis that deaf persons using cochlear prostheses will demonstrate intensity regulation of their vocal output that is more appropriate when their implants are turned on than when turned off. The intensity of their vocal output was measured to determine if they demonstrated a Lombard response, that is, a systematic increase in vocal intensity with increasing intensity of background noise. Results from the study were mixed. With implants on, three subjects made systematic increases in vocal intensity with increasing background noise, …

Phonational Frequency Ranges In Vocally Untrained Adults Using Different Cardinal Vowels, Lorie Renee Chambers

Dissertations and Theses

In the clinical management of voice clients, it is important to measure accurate pitch ranges in order to determine if a client has a normal range or is speaking at an optimum pitch. It is not clear from the literature which vowel should be used in determining these pitch ranges. The purpose of this investigation was to determine the phonational frequency ranges in adults with no vocal training when phonating the cardinal vowels of /i/, /u/, and /a/. The investigation sought to answer the following question: Does the phonational frequency range in vocally untrained adults vary significantly when phonating the …

A Voice Incidence Study: Portland, Oregon, Ann Lynn Laskey

Dissertations and Theses

The purpose of this study was to investigate the incidence of voice disorders among kindergarten and first-grade students in some schools in Portland, Oregon, during the Fall of 1974. The study was designed to determine the following information: 1) the percentage of voice disorders, 2) the percentage of each type of voice disorder, 3) the severity of each voice disorder, and 4) the percentage of males and of females exhibiting voice disorders.

The essential questions to be answered by the present study were:

1. What is the incidence of voice disorders in a kindergarten and first-grade (approximately five to seven years …

Effects Of Speaker-Sex-Difference On Listeners' Perception Of Vocal Roughness In Normal Vowel Productions, Patsy J. Phillips

Dissertations and Theses

The purpose of this study was to investigate the effects of speaker-sex-difference on listeners' perception of vocal roughness in the vowel [ӕ] produced by normal male and female speakers. In a previous investigation by Wendahl (1963) it was found that when listening to two synthesized vowels, of equal aperiodicity, judges tended to rate the lower pitched vowel as being more vocally rough. If this is true for listeners' perception of human vowel productions as well then it might be advantageous for voice clinicians, when making vocal roughness assessments, to regard male and female speakers as two separate populations in view …