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Full-Text Articles in Otolaryngology
Effect Of Head Coverings On Directional Microphone Performance In Modern Hearing Aids: A Kemar-Based Laboratory Evaluation, Zahra Fekri, Mariam Mohamad, Ayasakanta Rout
Effect Of Head Coverings On Directional Microphone Performance In Modern Hearing Aids: A Kemar-Based Laboratory Evaluation, Zahra Fekri, Mariam Mohamad, Ayasakanta Rout
Faculty Scholarship
Background/Objectives: Directional microphones are an established hearing aid technology for improving speech understanding in background noise. Although researchers have examined the influence of hair, spectacles, and earmold venting on directional performance, no systematic work has addressed head coverings, which people wear worldwide for cultural, religious, occupational, and personal reasons. This study determined whether a cotton head covering alters the directivity index (DI) of highest-level receiver-in-canal (RIC) hearing aids. Methods: A Knowles Electronics Manikin for Acoustic Research (KEMAR) was positioned in a double-walled, sound-treated booth, and DI was measured for omnidirectional and fixed directional microphone settings, with and without a two-layer …
Intertrial Coherence As A Measure Of Synchrony In Ocular Vestibular Evoked Myogenic Potentials And The Effect Of Gaze Angle, Sydney Brown
Intertrial Coherence As A Measure Of Synchrony In Ocular Vestibular Evoked Myogenic Potentials And The Effect Of Gaze Angle, Sydney Brown
Dissertations, 2020-current
Ocular vestibular evoked myogenic potentials (oVEMPs) are produced by highly synchronous bursts of extraocular muscle activity in response to stimuli. These responses reflect utricular function and can be recorded using surface electromyography electrodes. Traditional analysis of oVEMPs is limited to time-domain waveform measurements, such as amplitude and latency of response peaks. Objective synchrony-based measures have not yet been applied to the analysis of oVEMPs, particularly in the comparison of synchrony across gaze angles. We followed the new time-frequency method of analysis developed by Clinard et al. (2022) that was successfully applied to cervical VEMPs to quantify response synchrony. Air-conducted oVEMPs …
Melodic Contour Identification And Speech Recognition By School-Aged Children, Michael P. Morikawa
Melodic Contour Identification And Speech Recognition By School-Aged Children, Michael P. Morikawa
Dissertations, 2014-2019
Using the Sung Speech Corpus (SSC), which encompasses a single database that contains musical pitch, timbre variations and speech information in identification tasks, the current study aimed to explore the development of normal-hearing children’s ability to use the pitch and timbre cues. Thirteen normal hearing children were recruited for the study ages ranging from 7 to 16 years old. Participants were separated into two separate groups: Younger (7-9) and Older (10-16). Musical Experience was taken into account as well. The Angel Sound ™ program was utilized for testing which was adopted from previous studies, most recently Crew, Galvin, and Fu …