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Articles 241 - 270 of 1423

Full-Text Articles in Speech and Hearing Science

A Proof Of Concept For Detection Of Palato-Lingual Contact Without Intraoral Electrodes In A Human Participant, Amitava Biswas May 2023

A Proof Of Concept For Detection Of Palato-Lingual Contact Without Intraoral Electrodes In A Human Participant, Amitava Biswas

Master's Theses

The author of this thesis conceived and investigated an unexpected electrical signal that may not be noticed during regular electroglottography (EGG) when electrodes are conventionally placed on the anterior surface of the throat. It appears that there is a measurable electrical signal from the EGG equipment when electrodes are placed over the frontal cheek (belly of zygomatic muscle), and the tongue is elevated to contact the hard palate, or the tongue is lowered to break the contact. Therefore, this phenomenon is designated as unconventional electroglottography (UEGG, Dr. Steven Cloud, private communication, July 17, 2022).

Two distinctive patterns of waveforms were …


The Effects Of An Intervention Using Pokemon Trading Card Game On The Decoding Abilities Of Children, Derek Emmett May 2023

The Effects Of An Intervention Using Pokemon Trading Card Game On The Decoding Abilities Of Children, Derek Emmett

Open Access Theses & Dissertations

The present study focuses on illustrating the relationship between word decoding instruction and word decoding abilities within the context of a trading card game. Additionally, an argument for reading motivation and improvement of literacy skills is made. Three participants between the ages of 9 and 13 were recruited for participation in this study. Several decoding strategies such as phonemic awareness and morphological awareness strategies were implemented and trained over the course of several trading card games. Performance in decoding of several lists of compiled nonwords following treatment phases were systematically measured by the researcher. Two of the three participants demonstrated …


The Effects Of Using Baby Sign Training On The Interactions Between Mothers And Infants, Ayzzar Gurrola May 2023

The Effects Of Using Baby Sign Training On The Interactions Between Mothers And Infants, Ayzzar Gurrola

Open Access Theses & Dissertations

Baby sign has been becoming more popular and known through the publication of parenting books and websites dedicated to its use. Research continues to blossom on the subject, demonstrating that it is indeed beneficial on many levels for both the infant and their caregiver. Several researchers have implicated the effects of baby sign on infantsâ?? cognitive and behavioral development. The purpose of this research is to analyze the effects of a baby sign training on the interactions of mothers and their babies. Five typically developing infants between the ages of eight and fourteen months and their parent participated in this …


Supporting The Development Of Early Literacy For Children Using Augmentative And Alternative Communication (Aac), Logan Winter Apr 2023

Supporting The Development Of Early Literacy For Children Using Augmentative And Alternative Communication (Aac), Logan Winter

Student Academic Conference

This literature review was completed to explore emerging literacy skills in children who use Augmentative and Alternative Communication (AAC) for communication purposes. This paper explored the differences in language and literacy learning for children who utilize AAC. For children in early developmental phases of language, AAC played a role in both receptive and expressive language. Skills learned in receptive and expressive language can be shaped into what is considered early literacy skills. Through findings by researchers and experts in the field of AAC and speech-language pathology this paper defined specific interventions and supports that can be implemented during the development …


Variation In How Cognitive Control Modulates Sentence Processing, Abhijeet Patra, Jeremy Kirkwood, Erica L. Middleton, Malathi Thothathiri Apr 2023

Variation In How Cognitive Control Modulates Sentence Processing, Abhijeet Patra, Jeremy Kirkwood, Erica L. Middleton, Malathi Thothathiri

Moss-Magee Rehabilitation Papers

Prior research suggests that cognitive control can assist the comprehension of sentences that create conflict between interpretations, at least under some circumstances. However, the mixed pattern of results suggests that cognitive control may not always be necessary for accurate comprehension. We tested whether cognitive control recruitment for language processing is systematically variable, depending on the type of sentential ambiguity or conflict, individual differences in cognitive control, and task demands. Participants completed two sessions in a web-based experiment. The first session tested conflict modulation using interleaved Stroop and sentence comprehension trials. Critical sentences contained syntax-semantics or phrase-attachment conflict. In the second …


The Effects Of Verbal Fluency Interventions: Phonemic Versus Semantic Fluency Outcomes In Parkinson’S Disease, Brian Connelly Apr 2023

The Effects Of Verbal Fluency Interventions: Phonemic Versus Semantic Fluency Outcomes In Parkinson’S Disease, Brian Connelly

Student Academic Conference

•Relevant Literature and Background –Verbal Fluency Tasks –Parkinson’s Disease •Practice Activity –Phonemic and Semantic Trials •Discussion of the Study –Methods –Results –Discussion


Resting-State Functional Connectivity Of The Dorsolateral Prefrontal Cortex In Parkinson's Disease: A Longitudinal Study, Kaler Terry Apr 2023

Resting-State Functional Connectivity Of The Dorsolateral Prefrontal Cortex In Parkinson's Disease: A Longitudinal Study, Kaler Terry

Honors Theses

Understanding the role of brain network reallocation and adaptation within neurodegenerative disorders, such as Parkinson’s disease, is key in tracking disease progression and identifying potential biomarkers. In recent years, resting-state functional magnetic resonance imaging (rs-fMRI) has been applied in order to better understand the cognitive decline and overall pathophysiology in individuals with Parkinson’s disease. The present study aimed to determine the potential role of functional connectivity changes in the dorsolateral prefrontal cortex in individuals with Parkinson’s disease. This is a key brain region associated with cognitive skills and executive functions. Using rs-fMRI, clinical, and demographic data obtained from the Parkinson's …


Coaching Student Clinicians And Parents To Use Naturalistic Communication Techniques For Children With Signs Of Autism, Erin M. Gallegos Apr 2023

Coaching Student Clinicians And Parents To Use Naturalistic Communication Techniques For Children With Signs Of Autism, Erin M. Gallegos

Speech and Hearing Sciences ETDs

In this study, researchers implemented a short-term cascading coaching program focusing on naturalistic developmental behavioral interventions (NDBIs) with three participant triads consisting of a graduate student clinician, a minimally verbal child with autism spectrum disorder (ASD) or signs of ASD, and the child’s parent. The efficacy of several short-term instruction sessions, in-session coaching, and student clinician parent coaching was evaluated using a multiple baseline across interventionists design. The primary dependent variables were clinician and parent use of elicitation techniques, including creating communication temptations and prompting, and response techniques, including reinforcing child communication and using vocal models. Following targeting coaching, all …


Examining Perception And Understanding Of Stroke And Its Risk Factors In A Rural Population, Mackenzie King, Gabrielle Scarpa, Mary Gardiner Apr 2023

Examining Perception And Understanding Of Stroke And Its Risk Factors In A Rural Population, Mackenzie King, Gabrielle Scarpa, Mary Gardiner

Theses & Honors Papers

Stroke, also sometimes referred to as a brain attack, occurs when there is a blockage in blood supply to the brain or when a blood vessel bursts within the brain (CDC, 2022). Rural populations have a higher incidence of stroke and higher stroke mortality in the United States (Howard et al., 2017). Although there is a higher incidence rate of stroke in rural populations, researchers have also found that these populations appear to have limited knowledge on stroke and its risk factors. The current study employed a non-experimental descriptive design that explored stroke knowledge in adults residing in rural populations …


The Role Of The Pcc And Acc In Autism Spectrum Disorder: A Functional Connectivity Study, Claudia Gonzalez Apr 2023

The Role Of The Pcc And Acc In Autism Spectrum Disorder: A Functional Connectivity Study, Claudia Gonzalez

Honors Theses

Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that impacts behavior control and social skills. Currently, ASD diagnoses are largely qualitative; thus, having more quantitative means of identification would aid in earlier diagnosis of ASD. However, more research is needed to pinpoint observable neurobiological markers of ASD. Our study focused on the posterior cingulate cortex (PCC) due to past evidence suggesting its involvement in ASD symptomatology. The PCC has been linked to behavioral control and executive functioning. Moreover, previous studies support executive functioning’s responsibility for the repetitive and restricted behaviors (RRB) in ASD.

Method: Our study sought to …


Our Voices: Getting To Know Autism, Katherine Rasberry Mar 2023

Our Voices: Getting To Know Autism, Katherine Rasberry

Honors Theses

This study was done in effort to understand the thoughts and feelings of autistic adults relative to life transitions and resources available. We surveyed key stakeholders; specifically autistic students, but also family/caregivers of adults. Six surveys were created, each based upon different themes: camouflaging, life transitions, managing mental health, overstimulation, social communication, and family and caregiver perceptions. Our surveys were marketed on Western Michigan University’s campus and through social media and are still ongoing. Trends in the data, however, suggest that overall autistics have concerns about how their disabilities impact life in or shortly after college. Many respondents expressed they …


Alternative Techniques For Amplification: A Capstone Case Series, Toryn Davis, Antony Joseph Mar 2023

Alternative Techniques For Amplification: A Capstone Case Series, Toryn Davis, Antony Joseph

AuD Capstone Projects - Communication Sciences and Disorders

Abstract 1- Introduction: Charcot-Marie-Tooth (CMT) disease is a rare and chronic hereditary disorder that causes motor and sensory damage to the peripheral nervous system. As the disease progresses, hearing sensitivity may worsen. Case Presentation: A young adult-aged patient presented to the clinic with congenital hearing loss and difficulty with conversational speech in quiet and noisy conditions. Discussion: When encountering a patient with CMT, clinicians should be cognoscente of amplification options, especially if nerve pathways begin to deteriorate. When audiologic testing reveals a progression of hearing loss, alternative amplification may be indicated because conventional hearing aids may not provide enough …


Audiological Intervention For Late-Identified Children And Teenagers With Hearing Loss, Melissa Wiedeman, Antony Joseph Mar 2023

Audiological Intervention For Late-Identified Children And Teenagers With Hearing Loss, Melissa Wiedeman, Antony Joseph

AuD Capstone Projects - Communication Sciences and Disorders

Abstract 1 - Introduction: The family of every child referred for definitive care after a newborn hearing screening should follow up with an audiologist to rule out hearing impairment. Early identification, diagnosis, and intervention are crucial for individualized planning and outcomes. Children who need binaural amplification and are not managed appropriately become exposed to sound deprivation, which leads to diminished speech audibility, sound localization, and speech and language development. Case Presentation: A young child presented to the clinic with an unspecified bilateral mild to moderate hearing loss at 500, 2000, and 4000 Hz. Discussion: Children with monaural amplification have shown …


"Please Don't Assess Him To Destruction": The R.A.I.S.E. Assessment Framework For Primary Progressive Aphasia, Jeanne Gallée, Jade Cartwright, Anna Volkmer, Anne Whitworth, Deborah Hersh Mar 2023

"Please Don't Assess Him To Destruction": The R.A.I.S.E. Assessment Framework For Primary Progressive Aphasia, Jeanne Gallée, Jade Cartwright, Anna Volkmer, Anne Whitworth, Deborah Hersh

Research outputs 2022 to 2026

Purpose: Speech-language pathologists (SLPs) assess people with primary progressive aphasia (PPA) through measurements of speech, language, communication, and well-being, with the aims of identifying challenges and strengths, monitoring change, and informing treatment directions and supports. The purpose of this clinical focus article is to highlight the necessity for person-centered assessment specific to PPA and to conceptualize a framework that acknowledges the multifaceted nature of assessment for this population. In this framework, the unique challenges posed by a diagnosis of PPA are addressed with the aim to provide practical guidance for clinicians and to support reflection on current practices. Method: In …


Ensuring Equitable Treatment For People Of Color Receiving Audiology Care, Isabel Guidotti, Antony Joseph Mar 2023

Ensuring Equitable Treatment For People Of Color Receiving Audiology Care, Isabel Guidotti, Antony Joseph

AuD Capstone Projects - Communication Sciences and Disorders

Abstract 1- Introduction: As health care providers, serving patients equitably may require concurrent caring for the concerns and demands of family members as well. When striving to provide equitable care to patients of all backgrounds, familial participation throughout an appointment can play a substantial role. Case Presentation: An older adult male patient who used English as a second language presented with moderate, sloping to severe, mixed hearing loss, bilaterally. Hearing aid options were counseled and discussed in detail with the patient and his spouse. Discussion: The patient’s wife played an active role throughout the appointment and served as a valuable …


The Integration Of The Scholarship Of Teaching And Learning Into The Discipline Of Communication Sciences And Disorders, Jennifer Friberg, Jerry K. Hoepner, Allison M. Sauerwein, Kerry Mandulak Feb 2023

The Integration Of The Scholarship Of Teaching And Learning Into The Discipline Of Communication Sciences And Disorders, Jennifer Friberg, Jerry K. Hoepner, Allison M. Sauerwein, Kerry Mandulak

Teaching and Learning in Communication Sciences & Disorders

McKinney (2018) has argued that for the scholarship of teaching and learning (SoTL) to advance within a discipline, the integration of SoTL must be closely examined and opportunities for growth in SoTL must be recognized and discussed. To that end, this paper reflects on the degree to which SoTL is integrated into communication sciences and disorders (CSD) by examining a variety of topics: perspectives and theories historically valued by our discipline, existing supports for SoTL at various levels (i.e., individual teacher-scholars, departments, institutions, and the CSD discipline as a whole), the application of SoTL findings in teaching and learning. Four …


Late Talkers: Maternal Input And Attention Allocation In Mother–Child Dyad Play, Toby B. Mehl Feb 2023

Late Talkers: Maternal Input And Attention Allocation In Mother–Child Dyad Play, Toby B. Mehl

Dissertations, Theses, and Capstone Projects

Late talkers (LT) are two-year-old children with expressive language delays, who do not yet have a lexicon of fifty words, and do not combine words. Maternal child-directed language to these children, termed ‘maternal input’ may influence their language learning. The first aim of this study was to examine the relationship between a child’s language, as measured by expressive vocabulary, and the child-directed speech by the mother of the child. Maternal input to late-talking children was compared to the maternal input presented to two typical language matched groups: an age-matched group of children (AM) and a vocabulary-matched group of children (VM) …


Analysis Of Electrophysiological Markers And Correlated Components Of Neural Responses To Discourse Coherence, Kurt M. Masiello Feb 2023

Analysis Of Electrophysiological Markers And Correlated Components Of Neural Responses To Discourse Coherence, Kurt M. Masiello

Dissertations, Theses, and Capstone Projects

Constructing meaning from spoken language is invaluable for learning, social interaction, and communication. In clinical populations with developmental disorders of speech comprehension, the severity of disruption can persist and vary from limiting occupational opportunities to lower performance outcomes. Previous research has reported an event-related potential (ERP) neural positivity over right hemisphere lateral anterior sites in response to semantic and discourse processing. Although useful as a marker for clinical populations of autism spectrum disorder (ASD) and developmental language disorder (DLD), little is understood about the dynamics and neural sources of this biological marker. In addition to traditional methods of ERP analysis, …


Acoustic Voice And Speech Biomarkers Of Treatment Status During Hospitalization For Acute Decompensated Heart Failure, Olivia M Murton, G William Dec, Robert E Hillman, Maulik D Majmudar, Johannes Steiner, John V Guttag, Daryush D Mehta Feb 2023

Acoustic Voice And Speech Biomarkers Of Treatment Status During Hospitalization For Acute Decompensated Heart Failure, Olivia M Murton, G William Dec, Robert E Hillman, Maulik D Majmudar, Johannes Steiner, John V Guttag, Daryush D Mehta

Faculty, Staff and Student Publications

This study investigates acoustic voice and speech features as biomarkers for acute decompensated heart failure (ADHF), a serious escalation of heart failure symptoms including breathlessness and fatigue. ADHF-related systemic fluid accumulation in the lungs and laryngeal tissues is hypothesized to affect phonation and respiration for speech. A set of daily spoken recordings from 52 patients undergoing inpatient ADHF treatment was analyzed to identify voice and speech biomarkers for ADHF and to examine the trajectory of biomarkers during treatment. Results indicated that speakers produce more stable phonation, a more creaky voice, faster speech rates, and longer phrases after ADHF treatment compared …


Effects Of Affix Type And Base Word Transparency On Students' Performance On Different Morphological Awareness Measures, Victoria Henbest Jan 2023

Effects Of Affix Type And Base Word Transparency On Students' Performance On Different Morphological Awareness Measures, Victoria Henbest

Victoria S. Henbest Publications

We examined whether affix type and base word transparency explained variation in third- through sixth-grade students' performance on a number of morphological awareness tasks. Third- through sixth-grade students (n > 500 at each grade) completed morphological awareness tasks from the Morphological Awareness Test for Reading and Spelling, which represent the ways individuals may use their morphological awareness to support reading and spelling. Explanatory item response models were used to understand the role of affix type and base word transparency on students' performance on six morphological awareness tasks.For all grades, 73%-83% of variance in students' performance was due to differences across …


Graduate-Level Leadership Training For Speech-Language Pathologists: Perceptions, Attitudes, And Potential Effect On Career, Sandra Kemper Jan 2023

Graduate-Level Leadership Training For Speech-Language Pathologists: Perceptions, Attitudes, And Potential Effect On Career, Sandra Kemper

Theses, Dissertations and Capstones

The aim of this study is to determine how a perceived lack of leadership training at the graduate level contributes to inadequate preparedness for the clinical, professional, and supervisory leadership roles professionals hold within the field of speech-language pathology (Kummer, 2017). More specifically, this study will seek to identify current leadership concerns of practicing SLPs, exploring whether and/or how lack of leadership training has affected their professional growth or career. The information can serve to guide the development of leadership training opportunities in speech-language pathology graduate programs. This descriptive, non-experimental study utilized purposive sampling of speech-language pathologists licensed in the …


Gamelan Gong Directivity Dataset, Samuel D. Bellows, Dallin T. Harwood, Kent L. Gee, Micah R. Shepherd Jan 2023

Gamelan Gong Directivity Dataset, Samuel D. Bellows, Dallin T. Harwood, Kent L. Gee, Micah R. Shepherd

Directivity

No abstract provided.


The Effects Of Inspiratory Muscle Training On Exercise-Induced Laryngeal Obstruction In Young Adults, Allison Lyman Jan 2023

The Effects Of Inspiratory Muscle Training On Exercise-Induced Laryngeal Obstruction In Young Adults, Allison Lyman

Murray State Theses and Dissertations

Exercise-induced laryngeal obstruction (EILO) is a condition that results from abnormal vocal fold adduction upon inspiration (Abdel-Hamid, 2018). Symptoms of this ailment include dyspnea, choking sensations, an audible stridor, and/or coughing during physical exertion (Marcinow et al., 2014). These symptoms affect an individual’s ability to breathe adequately during exercise. A review of current literature suggests that there are a variety of interventions that can be used to reduce perceived dyspnea in individuals who suffer from EILO. One such intervention is known as inspiratory muscle training (IMT), which works to reduce dyspnea by strengthening the primary muscle of inspiration: the posterior …


Cross-Language Generalization In Language Treatment Of Multilingual Aphasia: A Meta-Analysis, Mira Goral, Monica I. Norvik, Jan Antfolk, Ioulia Agrotou, Minna Lehtonen Jan 2023

Cross-Language Generalization In Language Treatment Of Multilingual Aphasia: A Meta-Analysis, Mira Goral, Monica I. Norvik, Jan Antfolk, Ioulia Agrotou, Minna Lehtonen

Publications and Research

Studies on the efficacy of language treatment for multilingual people with post-stroke aphasia and its generalization to untreated languages have produced mixed results. We conducted a systematic review and a meta- analysis to examine within- and cross-language treatment effects and the variables that affect them. We searched PubMed, PsycINFO, CINAHL, and Google Scholar (February 2020; January 2023), identifying 40 studies reporting on 1573 effect sizes from 85 individuals. We synthesized effect sizes for treatment outcomes using a multi-level model to correct for multiple observations from the same individuals. The results showed significant treatment effects, with robust within-language treatment effects and …


Evaluation Of Tele-Diagnostic Practice In Autism Spectrum Disorder, Emily Graham Lerose Jan 2023

Evaluation Of Tele-Diagnostic Practice In Autism Spectrum Disorder, Emily Graham Lerose

Wayne State University Dissertations

EVALUATION OF TELE-DIAGNOSTIC PRACTICES IN AUTISM SPECTRUM DISORDER By Emily Graham LeRose Advisor: Dr. Shelly Jo Kraft, PhD, CCC-SLP Major: Communication Sciences and Disorders Degree: Doctor of Philosophy

Following the social-distancing mandates of the COVID-19 pandemic of 2020, diagnosis of autism spectrum disorder pivoted from an in-person method of evaluation, utilizing empirically supported “gold-standard” methods, to novel tele-diagnostic methods. This research investigated the efficacy and accessibility of autism diagnostic services using the tele-diagnostic platform of autism assessment by comparing retrospective patient data from periods of in-person assessment to tele-diagnostic assessment at one, large, urban hospital.

Diagnostic outcomes for these two …


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 Jan 2023

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

Graduate Theses/Dissertations

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 …


It's Never Too Soon! Comparing Intercultural Learning Outcomes Of Undergraduate Students Via Face-To-Face And Online Teaching Modalities, Aparajita Jaiswal, Christi Masters, Lan Jin, Tanvin Inani, Annika Schenkel, Muna Sapkota, Lata Krishnan Jan 2023

It's Never Too Soon! Comparing Intercultural Learning Outcomes Of Undergraduate Students Via Face-To-Face And Online Teaching Modalities, Aparajita Jaiswal, Christi Masters, Lan Jin, Tanvin Inani, Annika Schenkel, Muna Sapkota, Lata Krishnan

Department of Speech, Language, and Hearing Sciences Faculty Publications

Purpose: Providing culturally responsive care for a diverse patient population is critical for future speech-language pathologists and audiologists. Prior studies have shown gains in intercultural competence (ICC) from study abroad programs, face-to-face classes, and online courses; however, limited studies have investigated differences between face-to-face and online modes of delivery in speech-language pathology and audiology. The purpose of this study was (a) to evaluate whether there are quantitative differences in development of ICC in a direct comparison of a face-to-face and 100% asynchronous online introductory in communication dis-orders, and (b) to describe participants learning through the structural intercultural learning activities embedded …


Professional Development In Phonological Awareness For Early Childhood Educators In Low-Income, Urban Classrooms: A Pilot Study Examining Dosage Effects, Jayne E. Jaskolski, Maura Jones Moyle Jan 2023

Professional Development In Phonological Awareness For Early Childhood Educators In Low-Income, Urban Classrooms: A Pilot Study Examining Dosage Effects, Jayne E. Jaskolski, Maura Jones Moyle

Speech Pathology and Audiology Faculty Research and Publications

Providing high-quality literacy instruction in early childhood may positively affect the long-term outcomes of children from disadvantaged backgrounds. Previous research has shown that educators are generally lacking in their own phonological awareness knowledge and skills which could negatively impact the provision of effective instruction in code-focused early literacy skills. The purposes of this pilot study were to examine the effects of differing dosages of professional development in phonological awareness on early childhood educators’ (ECEs) own phonological awareness skills and instructional practices, and to examine the effects on child outcomes. The comparison group consisted of 10 ECEs who were receiving professional …


Brain Activity Associated With Taste Stimulation: A Mechanism For Neuroplastic Change?, Angela M. Dietsch, Ross M. Westemeyer, Douglas H. Schultz Jan 2023

Brain Activity Associated With Taste Stimulation: A Mechanism For Neuroplastic Change?, Angela M. Dietsch, Ross M. Westemeyer, Douglas H. Schultz

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: Neuroplasticity may be enhanced by increasing brain activation and bloodflow in neural regions relevant to the target behavior.We administered precisely formulated and dosed taste stimuli to determine whether the associated brain activity patterns included areas that underlie swallowing control.

Methods: Five taste stimuli (unflavored, sour, sweet-sour, lemon, and orange suspensions) were administered in timing-regulated and temperature-controlled 3 mL doses via a customized pump/tubing system to 21 healthy adults during functional magnetic resonance imaging (fMRI). Whole-brain analyses of fMRI data assessed main effects of taste stimulation as well as differential effects of taste profile.

Results: Differences in …


Passive Earplug Including Helmholtz Resonators Arranged In Series To Achieve Broadband Near Zero Occlusion Effect At Low Frequencies, Kevin Carillo, Franck Sgard, Olivier Dazel, Olivier Doutres Jan 2023

Passive Earplug Including Helmholtz Resonators Arranged In Series To Achieve Broadband Near Zero Occlusion Effect At Low Frequencies, Kevin Carillo, Franck Sgard, Olivier Dazel, Olivier Doutres

Études primaires

The use of passive earplugs is often associated with the occlusion effect: a phenomenon described as the increased auditory perception of one's own physiological noise at low frequencies. As a notable acoustic discomfort, the occlusion effect penalizes the use and the efficiency of earplugs. This phenomenon is objectively characterized by the increase in sound pressure level in the occluded ear canal compared to the open ear canal. Taking inspiration from acoustic metamaterials, a new design of a three-dimensional printed “meta-earplug,” made of four Helmholtz resonators arranged in series, is proposed for achieving near zero objective occlusion effect measured on artificial …