Matching Items (5)
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- All Subjects: Ultrasound
- Creators: Gardner, Joshua
Description
Clarinet multiphonics have become increasingly popular among composers since they were first introduced in the 1950s. However, it is a topic poorly understood by both performers and composers, which sometimes leads to the use of acoustically impossible multiphonics in compositions. Producing multiphonics requires precise manipulations of embouchure force, air pressure, and tongue position. These three factors are invisible to the naked eye during clarinet performance, leading to many conflicting theories about multiphonic production strategies, often based on subjective perception of the performer. This study attempts to observe the latter factor—tongue motion—during multiphonic production in situ using ultrasound. Additionally, a multiphonic catalog containing 604 dyad multiphonics was compiled as part of this study. The author hypothesized that nearly all, if not all, of the multiphonics can be produced using one of four primary production strategies. The four production strategies are: (A) lowering the back of the tongue while sustaining the upper note; (B) raising the back of the tongue while sustaining the upper note; (C) changing the tongue position to that of the lower note while sustaining the upper note; and (D) raising the root of the tongue (a sensation similar to constricting the throat) while sustaining the upper note. To distill production strategies into four primary categories, the author documented his perceived tongue motion over twenty repetitions of playing every multiphonic in the catalog. These perceptions were then confirmed or corrected through ultrasound investigation sessions after every five repetitions. The production strategies detailed in this study are only for finding the correct voicing to produce the multiphonics. The catalog compiled during this study is organized using two different organizational systems: the first uses the traditional method of organizing by pitch; the second uses a fingering-based system to facilitate the ease of finding multiphonics in question, since notated pitches of multiphonics often differ between sources.
ContributorsLiang, Jack Yi Jing (Author) / Gardner, Joshua (Thesis advisor) / Spring, Robert (Thesis advisor) / Caslor, Jason (Committee member) / Creviston, Christopher (Committee member) / Rockmaker, Jody (Committee member) / Arizona State University (Publisher)
Created2018
Description
Research on /r/ production previously used formant analysis as the primary acoustic analysis, with particular focus on the low third formant in the speech signal. Prior imaging of speech used X-Ray, MRI, and electromagnetic midsagittal articulometer systems. More recently, the signal processing technique of Mel-log spectral plots has been used to study /r/ production in children and female adults. Ultrasound imaging of the tongue also has been used to image the tongue during speech production in both clinical and research settings. The current study attempts to describe /r/ production in three different allophonic contexts; vocalic, prevocalic, and postvocalic positions. Ultrasound analysis, formant analysis, Mel-log spectral plots, and /r/ duration were measured for /r/ production in 29 adult speakers (10 male, 19 female). A possible relationship between these variables was also explored. Results showed that the amount of superior constriction in the postvocalic /r/ allophone was significantly lower than the other /r/ allophones. Formant two was significantly lower and the distance between formant two and three was significantly higher for the prevocalic /r/ allophone. Vocalic /r/ had the longest average duration, while prevocalic /r/ had the shortest duration. Signal processing results revealed candidate Mel-bin values for accurate /r/ production for each allophone of /r/. The results indicate that allophones of /r/ can be distinguished based the different analyses. However, relationships between these analyses are still unclear. Future research is needed in order to gather more data on /r/ acoustics and articulation in order to find possible relationships between the analyses for /r/ production.
ContributorsHirsch, Megan Elizabeth (Author) / Weinhold, Juliet (Thesis director) / Gardner, Joshua (Committee member) / Department of Speech and Hearing Science (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
Student to Student: A Guide to Anatomy is an anatomy guide written by students, for students. Its focus is on teaching the anatomy of the heart, lungs, nose, ears and throat in a manner that isn't overpowering or stress inducing. Daniel and I have taken numerous anatomy courses, and fully comprehend what it takes to have success in these classes. We found that the anatomy books recommended for these courses are often completely overwhelming, offering way more information than what is needed. This renders them near useless for a college student who just wants to learn the essentials. Why would a student even pick it up if they can't find what they need to learn? With that in mind, our goal was to create a comprehensive, easy to understand, and easy to follow guide to the heart, lungs and ENT (ear nose throat). We know what information is vital for test day, and wanted to highlight these key concepts and ideas in our guide. Spending just 60 to 90 minutes studying our guide should help any student with their studying needs. Whether the student has medical school aspirations, or if they simply just want to pass the class, our guide is there for them. We aren't experts, but we know what strategies and methods can help even the most confused students learn. Our guide can also be used as an introductory resource to our respective majors (Daniel-Biology, Charles-Speech and Hearing) for students who are undecided on what they want to do. In the future Daniel and I would like to see more students creating similar guides, and adding onto the "Student to Student' title with their own works... After all, who better to teach students than the students who know what it takes?
ContributorsKennedy, Charles (Co-author) / McDermand, Daniel (Co-author) / Kingsbury, Jeffrey (Thesis director) / Washo-Krupps, Delon (Committee member) / Department of Speech and Hearing Science (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
Until the second half of the 20th century, publications on breathing techniques for woodwinds have been scarce and often failed to adequately address this aspect of performance and pedagogy. It is through various sensory experiences and because of recent technological advances that academics recognize a gap in the existing literature and have since included studies using various methods, as well as modern technical devices and experiments into the woodwind literature and teaching. These studies have proven to be of great importance to confirm ideas and hypotheses on the matter.
The aim of this project is to collect woodwind journal publications into a meta-analysis, focusing specifically on the breathing techniques for woodwind instruments and provide a comprehensive annotated bibliography on the topic and its application. The project is limited to journal articles on breathing techniques applied for woodwinds only, and will not review literature discussing breathing from other perspectives or in a broader sense.
Major findings show that misconceptions and contradictions on the subject still exist. At the same time, they also highlight unique approaches used to help the learner overcome general and specific challenges while mastering the art of breathing.
The project highlights areas where future research on breathing would be encouraged and should be complemented by measured data. Such studies might include a woodwind specific examination of the relationship between the tongue and the soft palate, or analysis of how tension in the torso muscles influences the movement of the diaphragm, or how rhythmical breathing affects breath control and capacity, and finally a discussion on how larynx influences the air stream.
The aim of this project is to collect woodwind journal publications into a meta-analysis, focusing specifically on the breathing techniques for woodwind instruments and provide a comprehensive annotated bibliography on the topic and its application. The project is limited to journal articles on breathing techniques applied for woodwinds only, and will not review literature discussing breathing from other perspectives or in a broader sense.
Major findings show that misconceptions and contradictions on the subject still exist. At the same time, they also highlight unique approaches used to help the learner overcome general and specific challenges while mastering the art of breathing.
The project highlights areas where future research on breathing would be encouraged and should be complemented by measured data. Such studies might include a woodwind specific examination of the relationship between the tongue and the soft palate, or analysis of how tension in the torso muscles influences the movement of the diaphragm, or how rhythmical breathing affects breath control and capacity, and finally a discussion on how larynx influences the air stream.
ContributorsJevtic-Somlai, Csaba (Author) / Spring, Robert (Thesis advisor) / Gardner, Joshua (Thesis advisor) / Humphreys, Jere (Committee member) / Suzuki, Kotoka (Committee member) / Arizona State University (Publisher)
Created2019
Description
A previous study identified a subset of participants who required multiple swallows to clear a single bolus (Weinhold & McKay, 2017). Presence of multiple swallows was positively correlated with orofacial myofunctional disorder (OMD), suggesting that multiple swallows might be a potential screening marker for OMD. Since bolus size was not controlled in the study, reviewers questioned whether multiple swallows might have been a consequence of larger bolus size. In 2018, Pennington and Weinhold replicated this study by using a consistent 5ml bolus and revealed a similar correlation between OMD and multiple swallows. However, the test instrument used in that study to identify OMD yielded an OMD incidence of 60%. Accordingly, a new test instrument was developed to increase specificity of scoring for future studies. The new instrument identified 30% of participants as having OMD, which is more in line with the literature. The current study replicated Weinhold & McKay (2017) by utilizing the new test instrument as well as a predetermined average sip size for each participant. Utilizing both a controlled bolus of 5ml, and a participant-specific bolus size failed to eliminate multiple swallows. Linear regression revealed no significant relationship between size of bolus and number of swallows for either study; therefore, the hypothesis that the size of the unmeasured boluses in Weinhold & McKay caused differences in number of swallows was rejected. The suggestion that multiple swallows are indicative of OMD was strengthened, prompting further investigation into the relationship between number of swallows per bolus and OMD. Ultrasound images of three stages of the oral swallow were compared for the OMD and non-OMD groups. No statistical differences were noted in tongue constriction, which did not support our hypothesis that the OMD participants would display less constriction. However, baseline tongue position of /𝑎/ for participants with OMD was significantly lower than the baseline of participants without OMD. Pertinence of these findings relative to the oral stages of the swallow are addressed, as well as implications of oral stage dysfunction in general.
ContributorsPennington, Amanda Jean (Author) / Weinhold, Juliet (Thesis director) / Gardner, Joshua (Committee member) / Dean, W.P. Carey School of Business (Contributor) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05