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Dissertations / Theses on the topic 'Pure-tone'

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Published: 4 June 2021

Last updated: 27 July 2024

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1

Guan, Nan. "Bayesian Optimal Pure Tone Audiometry with Prior Knowledge." Thesis, KTH, Ljud- och bildbehandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-55361.

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Pure tone hearing threshold measurement is the most basic and common test for diagnosis of hearing loss and for compensation of the loss with hearing instruments. Pure-tone hearing thresholds are usually assessed using a simple standardized method. By employing an optimal strategy, the thresholds can be determined with the same accuracy as the standard method with much less presentations. With prior knowledge extracted from the Beltone’s extra database, which contains over 400,000 audiograms including age and gender information, a more detailed prior knowledge will help improve the optimal str

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2

Harris, Frances Pauline. "Distortion-product emissions and pure-tone behavioral thresholds." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184483.

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Distortion-product emissions (DPEs) are tonal responses that may be detected in the ear canal when the ear is stimulated simultaneously by two tones that are closely spaced in frequency. In experimental animals, DPEs are reduced in amplitude or are eliminated when cochlear function is disrupted. This association has not been investigated in human subjects. This study was designed to investigate the relation of cochlear status, as determined by pure-tone behavioral thresholds, to DPE amplitude in human subjects. Forty men were selected as subjects. Twenty had normal hearing and 20 had high-freq

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3

Garcia, Bonito Juan J. "Local active control in pure tone diffracted diffuse sound fields." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243146.

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4

West, A. D., Christopher A. Burks, D. Foren, and Marc A. Fagelson. "The Effect of Noise on DPOAEs and Pure-tone Thresholds." Digital Commons @ East Tennessee State University, 2002. https://dc.etsu.edu/etsu-works/1608.

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5

Dye, Amy. "Comparison of Selected Pure-Tone and Speech Tests in Predicting Hearing Handicap." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc500231/.

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This study assessed the effective use of pure-tone testing versus speech testing as used to predict the degree of hearing handicap experienced by an individual. Twenty-one subjects over the age of 65 were tested. Each subject was administered the following test battery: spondee threshold; a pure-tone evaluation, including air and bone conduction; Speech Perception in Noise (SPIN) test; Synthetic Sentence Identification (SSI) test; NU-6 for speech discrimination; establishment of most comfortable listening level (MCL) and loudness discomfort listening level (LDL); immittance testing including t

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6

Lavoie, Kimberly J. "High Frequency Pure Tone Audiometry and High Frequency Distortion Product Otoacoustic Emissions: A Correlational Analysis." PDXScholar, 2003. https://pdxscholar.library.pdx.edu/open_access_etds/1688.

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Previous studies show that pure tone thresholds are strongly correlated with distortion product otoacoustic emission amplitudes when evaluating the frequency range from 1 to 8 kHz (Avan & Bonfils, 1993). Little is known about correlations between these two measures at higher frequencies from 9-16 kHz. This study compared pure tone thresholds and distortion product otoacoustic emissions (DPOAEs) in this high frequency range for 29 normal hearing subjects ages 18-30. Pure tone thresholds were obtained at 250-16 kHz and distortion product otoacoustic emissions (DPOAE) 2,211-17,675 were measured i

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7

Hartnell, Elaine Marie. "'Immaculately pure and very high in tone' : proto-feminism in the novels of Rosa Nouchette Carey." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/30294.

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This thesis constitutes the first in-depth study of the forty-one largely-forgotten 'domestic' novels of Rosa Carey [1840-1909]. Jane Crisp's pioneering monography on Carey combines a useful essay on the major themes in the novels with extensive bibliographies of Carey's work and other related material. However, this thesis is the first extended treatment of the novels to place them in their historical context and to apply to them to a variety of theoretical readings. Thus, it is germane to the feminist project of 'rediscovery'. However, the work also dovetails into existing scholarship in tha

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8

Samaha, Mark. "Functional magnetic resonance imaging (fMRI) of the auditory cortex : an event-related study using pure tone stimulation." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33028.

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Introduction. The use of Functional Magnetic Resonance Imaging (fMRI) in studying central auditory pathways expanded our knowledge of the neurophysiology of hearing. In various studies, an array of diverse auditory stimuli has been used, including pure tones and words, in a "Block" design. Few studies, thus far, have been performed using an event-related design. None of these has used pure tone stimulation.<br>Subjects and methods. In eight out of 13 subjects enrolled and scanned in this project, data have been acquired and processed. Binaural pure tone stimulation at 2kHz and one higher frequ

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9

Petersen, Lucretia. "A comparison of pure tone thresholds and distortion product otoacoustic emission measures in patients with Tuberculosis receiving aminoglycosides." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/2932.

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10

Goel, Eyal. "Noise-induced hearing loss in aerobic class goers : a longitudinal study with pure tone audiometry and distortion product otoacoustic emissions." Thesis, University of Canterbury. Department of Communication Disorders, 2009. http://hdl.handle.net/10092/2605.

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At-risk hearing conditions in various aerobic classes in different gymnasiums were identified and the hearing of aerobic class goers monitored to provide information for an improved understanding of noise-induced hearing loss. Hearing levels were monitored over time for four comparison groups, including regular attendees of aerobic classes with an average noise level above 85 dBA (“High-Risk” group), regular attendees of aerobic classes with an average noise level below 85 dBA (“Low-Risk” group), non-gym goers attending one “High-Risk” aerobic class with hearing protection (“Control with HP” g

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11

De, Waal Rouviere. "Objective prediction of pure tone thresholds in normal and hearing-impaired ears with distortion product otoacoustic emissions and artificial neural networks." Pretoria : [s.n.], 2000. http://upetd.up.ac.za/thesis/available/etd-07142006-112943.

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12

De, Waal Rouviere. "The use of artificial neural networks to predict pure tone thresholds in normal and hearing-impaired ears with distortion product otoacoustic emissions." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-07292009-125000.

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13

De, Waal Rouviere. "The use of artificial neural networks to predict pure tone thresholds in normal and hearing- impaired ears with distortion product otoacoustic emissions." Diss., University of Pretoria, 1998. http://hdl.handle.net/2263/26810.

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In the evaluation of special populations, such as neonates, infants and malingerers, audiologist often have to rely heavily on objective measurements to assess hearing ability. Current objective audiological procedures such as tympanometry, the acoustic reflex, auditory brainstem response and transient evoked otoacoustic emissions, however, have certain limitations, contributing to the need of an objective, non¬invasive, rapid, economic test of hearing that evaluate hearing ability in a wide range of frequencies. The purpose of this study was to investigate distortion product otoacoustic emiss

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14

Schmuziger, Nicolas, Rudolf Probst, and Jacek Smurzynski. "Test-Retest Reliability of Pure-Tone Thresholds from 0.5 to 16 kHz using Sennheiser HDA 200 and Etymotic Research ER-2 Earphones." Digital Commons @ East Tennessee State University, 2004. https://dc.etsu.edu/etsu-works/1987.

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Objective The purposes of the study were: (1) To evaluate the intrasession test-retest reliability of pure-tone thresholds measured in the 0.5–16 kHz frequency range for a group of otologically healthy subjects using Sennheiser HDA 200 circumaural and Etymotic Research ER-2 insert earphones and (2) to compare the data with existing criteria of significant threshold shifts related to ototoxicity and noise-induced hearing loss. Design Auditory thresholds in the frequency range from 0.5 to 6 kHz and in the extended high-frequency range from 8 to 16 kHz were measured in one ear of 138 otologicall

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15

Ferreira, Liscia Lamenha Apolinario. "Amplitude das emissões otoacústicas por produto de distorção em motociclistas normo-ouvintes." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/5/5143/tde-09102014-103515/.

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Introdução: Os motociclistas estão expostos tanto ao ruído ambiental como ao ruído gerado pela própria motocicleta. Tal exposição ao ruído pode provocar lesões na orelha interna, de modo que o registro das emissões otoacústicas por produto de distorção (EOAEPD) pode evidenciar as alterações de forma precoce. Objetivo: Verificar as variações das amplitudes das emissões otoacústicas evocadas por produto de distorção nos carteiros motociclistas normo-ouvintes de acordo com o tempo de exposição a ruído e analisar com trabalhadores normo-ouvintes não expostos a ruído ocupacional. Método: Foram aval

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16

Rudolph-Claasen, Zerilda. "Hearing loss amongst dr-tb patients that received extended high frequency pure tone audiometry monitoring (kuduwave) at three dr-tb decentralized sites in Kwazulu-Natal." University of the Western Cape, 2017. http://hdl.handle.net/11394/6721.

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Doctor Educationis<br>Ototoxic induced hearing loss is a common adverse event related to aminoglycosides used in Multi Drug Resistant -Tuberculosis treatment. Exposure to ototoxic drugs damages the structures of the inner ear. Symptomatic hearing loss presents as tinnitus, decreased hearing, a blocked sensation, difficulty understanding speech, and perception of fluctuating hearing, dizziness and hyperacusis/recruitment. The World Health Organization (1995) indicated that most cases of ototoxic hearing loss globally could be attributed to treatment with aminoglycosides. The aim of the st

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17

Carr, Patricia I. "Development of an Audiological Test Procedure Manual for First Year Au.D. Students." Scholar Commons, 2001. https://scholarcommons.usf.edu/etd/1535.

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A student manual of audiological procedures with accompanying laboratory assignments does not presently exist at the University of South Florida (USF). In the first year of the four year Au.D. program at USF, students are enrolled in Audiology Laboratory Clinic I, II, and III, in consecutive semesters. Groups of four to six students meet weekly for a 3-1/2 hour clinical laboratory session to receive training in test instruction, test procedures, test application, and test interpretation. The purpose of the first year Audiology laboratory clinic sessions is to prepare the student for clinical e

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18

Rudolph-Claasen, Zerilda Suzette. "Hearing loss amongst DR-TB patients that have received extended high-frequency pure tone audiometry monitoring (KUDUwave) at three DR-TB decentralized sites in Kwazulu Natal." University of the Western Cape, 2018. http://hdl.handle.net/11394/6583.

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Magister Public Health - MPH<br>Ototoxic induced hearing loss is a common adverse event related to aminoglycosides used in Multi Drug Resistant -Tuberculosis treatment. Exposure to ototoxic drugs damages the structures of the inner ear. Symptomatic hearing loss presents as tinnitus, decreased hearing, a blocked sensation, difficulty understanding speech, and perception of fluctuating hearing, dizziness and hyperacusis/recruitment. The World Health Organization (1995) indicated that most cases of ototoxic hearing loss globally could be attributed to treatment with aminoglycosides. The aim of t

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19

Blahák, Petr. "Audiometr pro audiometrii čistými tóny." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218668.

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Human hearing is to collect information from the outside world and is one of the basic human senses. Part of this thesis is devoted to acoustics, properties of the human ear in terms of perception of sounds and methods, which human ears are investigating. Audiometer is an instrument which is most often used in healthcare. The main content of this thesis is to design pure tone audiometer, which is important for the subjective tests of human hearing non-invasive method.

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20

Caswell, Karin Leola. "Test-Retest Reliability of Speech Recognition Threshold Material in Individuals with a Wide Range of Hearing Abilities." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3426.

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The purpose of this study was to evaluate an updated list of digitally recorded Speech Recognition Threshold (SRT) materials for test-retest reliability. Chipman (2003) identified 33 psychometrically equated spondaic words that are frequently occurring in English today. These digitally recorded words were used to determine the SRT of 40 participants using the American Speech-Language Hearing Association guidelines. The participants were between the ages of 19 and 83 years and presented with hearing impairment ranging from normal to severe. The individual's pure-tone averages classified 16 part

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21

Fernandes, Kelly Cristina de Souza. "Mascaramento clínico: limiares auditivos pelos métodos Platô e Otimizado." Pontifícia Universidade Católica de São Paulo, 2007. https://tede2.pucsp.br/handle/handle/12124.

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Made available in DSpace on 2016-04-27T18:12:24Z (GMT). No. of bitstreams: 1 Kelly Cristina de Souza Fernandes.pdf: 272473 bytes, checksum: fd1b99ff0dcaf5e12bdb0ad1b9c2912e (MD5) Previous issue date: 2007-10-09<br>INTRODUCTION: Many situations may difficult the obtaining of thresholds for each ear, separately, in pure tone audiometry, demanding the use of masking. The plateau method, developed by Hood (1960) has being the most utilized for more than four decades. Nevertheless, Turner (2004) has suggested a masking protocol with a different method, called optimized, which could replace the pr

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22

Thongyai, Kanthong. "Verification of high intensity air-conduction stimuli of ASSRs in profound and deaf, and, Correlations and comparisons of the mixed modulated exponential stimuli of ASSRs to pure tone stimuli of audiometry in normal hearing." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1448683.

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23

Glazier, Robert Udell. "Antioxidant Polymorphisms and Susceptibility to Solvent- Induced Hearing Loss in Factory Workers." Yale University, 2010. http://ymtdl.med.yale.edu/theses/available/etd-03052010-143503/.

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Occupational exposure-related hearing loss is a significant health concern for affected workers. Organic solvent exposure has emerged as an important contributor to hearing loss. It is thought that hearing loss related to solvent and noise exposure is mediated by reactive oxygen species (ROS). The glutathione associated enzymes and the manganese superoxide dismutase enzymes (SOD2) are important components of the cochlear hair cellâs defense against oxidative stress. This study is aimed to determine whether polymorphisms within the glutathione S-transferases (GST) P1 and GSTM1, glutathione pero

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24

Silva, Denise Torreão Corrêa da. "Confiabilidade do exame de audiometria tonal baseado no cálculo de incerteza de medição ISO 8253-1:2010." Pontifícia Universidade Católica de São Paulo, 2016. https://tede2.pucsp.br/handle/handle/12043.

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Made available in DSpace on 2016-04-27T18:12:12Z (GMT). No. of bitstreams: 1 Denise Torreao Correa da Silva.pdf: 13435475 bytes, checksum: 0ee13ef29957b217cb6d5b50c30944cf (MD5) Previous issue date: 2016-02-16<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>To estimate the measurement uncertainty of the pure-tone audiometry by air-conduction, in the frequencies from 250 Hz to 8000 Hz, and bone-conduction, at frequencies of 500 Hz to 4000 Hz. Method: This is an observational, descriptive and cross sectional study. Accuracy measurement tests under repeatability conditions w

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Piatto, Vânia Belintani. "Avaliação da audição em criança de 3 a 6 anos, em creches e pré-escolas municipais, de São José do Rio Preto, São Paulo." Faculdade de Medicina de São José do Rio Preto, 1998. http://bdtd.famerp.br/handle/tede/209.

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Made available in DSpace on 2016-01-26T12:51:49Z (GMT). No. of bitstreams: 1 vaniapiatto_dissert.pdf: 265912 bytes, checksum: d6bd354613ca0a9752b4acad6612d8cd (MD5) Previous issue date: 1998-12-18<br>The aim of this study was to evaluate the hearing and the prevalence of hearing impairment among children, in the age groups of 3 to 6 years old, from Municipal Nursery and Pre-schools of São José do Rio Preto, S.P. At first stage, audiometries in a free field were performed for screening in 103 children, both sexes in 8 Nursery and 8 Pre-schools previously selected. At second stage, the ones w

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26

Demany, Laurent. "La Perception de la hauteur tonale." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376043783.

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27

Servière, Jacques. "La tonotopie du colliculus inferieur chez trois espèces de mammifères (chat, singe, cobaye) : étude anatomo-fonctionnelle par le 14c-2-désoxyglucose." Paris 6, 1986. http://www.theses.fr/1986PA066251.

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28

Huang, Yi-Wen, and 黃意雯. "A Research of Interactive User Interface Applied to Pure Tone Audiometer for Young Children." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/71217215046713847318.

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碩士<br>國立陽明大學<br>復健科技輔具研究所<br>91<br>Abstract The task of early detection of hearing problems for young children has been evoked continually in Taiwan. It is very important to find those young children with slight hearing loss and help them for better care. Basically, present methods of audiological test include otoacoustic emissions test, tympanogram and pure tone audiometry. The main purpose of applying the pure tone audiometry is for two reasons: lowering transfer rate and better detection precision to slight hearing loss. The researcher has conducted field observat

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Shen, Cheng-Chieh, and 沈正傑. "An MEG Research of active property on human Temporal lobe by different pure tone stimulus." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/20462672347706368740.

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30

張維恩. "The MEG study on human auditory evoked magnetic fields elicited by different frequency pure tone stimulus." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09133331889036844864.

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31

Maclennan-Smith, F. J. (Felicity Jane). "Validity of diagnostic pure tone audiometry using a portable computerised audiometer without a sound-treated environment." Diss., 2013. http://hdl.handle.net/2263/33320.

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It is estimated that 10% of the global population is impaired to a significant degree by a decrease in hearing sensitivity. With the greatest proportion of these persons residing in developing countries where communities are grossly underserved, it is incumbent on hearing healthcare professionals to seek means of offering equitable hearing health care services to these communities. The delivery of conventional diagnostic hearing services to these population groups is challenged by limitations in human resources, financial constraints and by the dearth of audiometric testing facilities t

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Lai, Wei-Bin, and 賴維斌. "Effects of Prolonged Pure Tone Exposure on Inhibitory GABAA Receptor Functions in the Inferior Colliculus of Young Rats." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13968459165934583151.

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碩士<br>國立成功大學<br>生理學研究所<br>92<br>The inferior colliculus (IC) is a major auditory midbrain structure that is critical for speech-related information processing, sound localization and head reflex to sound. Increasing evidence indicates that IC neurons are very plastic to sound manipulation. For instance, previous electrophysiological studies have shown that in adult IC more neurons are found near the frequency of a priming tone (4 kHz, 65 dB SPL) presented to the animal during the neonatal period and their minimum thresholds are elevated. Currently the GABA-mediated inhibitory neural mechanism

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Lee, Kuan-I., and 李冠儀. "Comparison of 1000 and 4000 Hz pure tone hearing screening for preschool children between child care personnel and audiologists." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/94890598479048737938.

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碩士<br>國立台北護理學院<br>聽語障礙科學研究所<br>93<br>This study compared the results of pure tone hearing screening for the right ears of preschool children between audiologists and child care personnel, who received the training course of children hearing screening. The purpose of the study is to evaluate the efficacy of hearing screening performed by child care personnel. Such evaluation could provide the information for the future implementation of hearing screening for preschool children. Fifty child care personnel and 22 audiologists participated in this study. A total of 1,292 preschool children re

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Chia, Nai-Wen, and 賈乃文. "Correlation of Taiwanese Speech Recognition Threshold and Pure-tone Average in Normal Hearing Subjects and Sensorineural Hearing Impaired Subjects." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/23019591049141460707.

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碩士<br>國立臺北護理健康大學<br>聽語障礙科學研究所<br>101<br>Speech audiometry, including speech detection threshold, speech recognition threshold and speech discrimination, is considered as a part routine audiological assessment. In Taiwan, speech recognition test with Chinese material has been used widely. However, there are many individuals, especially elderly, whose first language is Taiwanese. Researchers have suggested that speech background may have impact on the result of speech audiometry. In 1994, Lin, Chang, and Shen developed a Taiwanese speech recognition test material for individuals whose first lang

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Lin, Huei-Jhen, and 林慧珍. "Comparison of threshold measures with auditory brainstem response, wireless auditory brainstem response and pure tone audiometry in normal hearing subjects." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/30752403230012869059.

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碩士<br>國立台北護理學院<br>聽語障礙科學研究所<br>98<br>The purpose of this study is to obtain the behavioral thresholds in response to the click and tone bursts of 500, 1000, 2000 and 4000 Hz by using the Nicolet and the Integrity™ auditory evoked systems from a small group of normal-hearing subjects. The ABR thresholds were obtained with the click and tone bursts stimuli from subjects with normal hearing sensitivity. The ABR thresholds were compared with the pure tone thresholds, and the results of ABR thresholds from two auditory evoked systems were also compared. The averaged time to complete the ABR thresho

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WANG, JO-CHIH, and 王若芷. "Comparison of Threshold Measures with Auditory Brainstem Response, Middle Latency Response and Pure Tone Audiometry in Adults with Hearing Loss." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/96248188465751112246.

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碩士<br>國立臺北護理健康大學<br>語言治療與聽力研究所<br>105<br>The purpose of this study is to compare threshold measures with auditory brainstem response (ABR) , auditory middle latency response (AMLR) to tone bursts of 500 and 4000 Hz, and pure tone audiometry. Seventeen participants aged from 25 to 60 years old, exhibited pure tone thresholds ranged from 40 to 80 dB HL at 500 and 4000 Hz, as well as type A tympanograms. The results indicated that the mean differences between ABR and pure tone thresholds of 500 and 4000 Hz were 6.0 and 6.3 dB respectively, standard deviations were 7.8 and 6.6 dB respectively.

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Reis, Luis Miguel Roque dos. "Effect of the ear canal occlusion on pure tone thresholds and its clinical applicability in validation of the contralateral occlusion test." Doctoral thesis, 2021. http://hdl.handle.net/10362/118400.

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RESUMO: Introdução e objetivos: Os testes de cabeceira podem diminuir o tempo de resposta clínica, melhorar a tomada de decisões e permitir uma rápida avaliação qualitativa da perda auditiva. Este estudo descreve o desenho e a validação dum novo teste de cabeceira com diapasão que permite quantificar a perda auditiva, na presença de surdez de condução unilateral. O estudo considerou três fases distintas: a primeira fase avaliou os efeitos da oclusão completa do canal auditivo externo sobre a audição, a fim de decidir qual a frequência de diapasão mais adequada para quantificar a hipoacus

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De, Waal Rouviere. "Objective prediction of pure tone thresholds in normal and hearing-impaired ears with distortion product otoacoustic emissions and artificial neural networks." Thesis, 2001. http://hdl.handle.net/2263/26276.

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In the evaluation of special populations, such as neonates, infants and malingerers, audiologists have to rely heavily on objective measurements to assess hearing ability. Current objective audiological procedures such as tympanometry, the acoustic reflex, auditory brainstem response and transient evoked otoacoustic emissions, however, have certain limitations, contributing to the need of an objective, non-invasive, rapid, economic test of hearing that evaluate hearing ability in a wide range of frequencies. The purpose of this study was to investigate distortion product otoacoustic emissions

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Swanepoel, De Wet. "Estimating pure tone behavioural thresholds with the dichotic multiple frequency auditory steady state response compared to an auditory brainstem reponse protocol in normal hearing adults." Diss., 2002. http://hdl.handle.net/2263/30001.

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Audiologists are reliant on objective audiometric procedures to predict auditory sensitivity in difficult-to-test populations. A technique to estimate frequency-specific hearing thresholds in a time-efficient way for difficult-to-test populations, who are unable to provide behavioural responses, has long been the hope of audiologists. The auditory brainstem response (ABR) has dominated the field of objective electrophysiological audiometry for the past three decades. Although it provides a useful method of estimating auditory sensitivity, it presents with its own set of limitations. Recently t

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Kavallieratos, Angela. "Hearing function in adults with Multiple Drug Resistant-TB : a retrospective review." Thesis, 2012. http://hdl.handle.net/10539/11880.

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KwaZulu-Natal has been ranked as having the fourth highest incidence of transmitted Multiple Drug Resistant-Tuberculosis (MDR-TB) in sub-Saharan Africa. Substantial literature exists indicating the permanent damage that MDR-TB medication has on hearing abilities. The purpose of this study was to describe the hearing function of adults on long term MDR-TB treatment from Murchison Hospital MDR-TB unit in the Ugu District in rural KwaZulu-Natal. The primary aim of the study was to review the possible changes in hearing function in a group of adults on long-term treatment for MDR-TB. Secondly, the

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Marais, Jacobus Johannes. "Transducer influence on Auditory Steady State Evoked Potentials." Diss., 2005. http://hdl.handle.net/2263/22935.

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Preliminary studies have stirred the hope that sound-field stimulation through auditory steady state evoked potentials can be used to assess aided thresholds in the difficult-to-test population. Before the introduction of ASSEP into the clinical field, as a technique for the prediction of aided thresholds in the difficult-to-test population, a question arises concerning its clinical validation. The application of ASSEP through sound field stimulation, in the determination of aided thresholds and for the evaluation of amplification fittings, is dependent on the determination of unaided response

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Reddy, Tarryn Marisca. "The feasibility of including Distortion Product Otoacoustic Emissions (DPOAEs) in the annual medical surveillance test battery for the identification of noise-induced hearing loss in a group of workers in a beverage manufacturing industry." Thesis, 2013. http://hdl.handle.net/10413/10135.

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The study investigated the feasibility of including DPOAEs in the annual medical surveillance test battery for the identification of NIHL in a group of employees in a manufacturing industry in KwaZulu-Natal. Feasibility was investigated by exploring the sensitivity, specificity and predictive efficiency of DPOAEs, the ability of DPOAEs to detect subtle noise-induced cochlea changes, the test-retest reliability of DPOAEs and lastly, the duration of time taken to conduct the DPOAE test bilaterally. A cross-sectional and repeated measures within-in participant design was utilized in the study. A

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Berkowska, Magdalena Iwona. "Jakość wykonania wokalnego osób bez wykształcenia muzycznego a percepcja właściwości dźwięków." Doctoral thesis, 2016. https://depotuw.ceon.pl/handle/item/1516.

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Śpiewanie jest równie naturalną czynnością jak mówienie. Wzrastająca liczba prac naukowych pokazuje, że osoby nie związane profesjonalnie z muzyką albo wykonaniem wokalnym potrafi śpiewać poprawnie, zwłaszcza gdy są one proszone o śpiewanie dobrze im znanych piosenek lub imitowanie pojedynczych dźwięków, interwałów lub krótkich melodii. Zdarzają się jednak różnice pomiędzy jednostkami w populacji ogólnej, biorąc pod uwagę wykonanie wokalne. Niektóre osoby wykazują szczególną niedokładność czy nieprecyzyjność podczas śpiewania albo imitowania informacji dźwiękowej. Osoby te, określane mianem „s

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Patrício, Pedro Luís de Morais. "Ilusões sonoras : um estudo sobre a aplicação da ilusão sonora da escala de Shepard em composição musical digital." Doctoral thesis, 2015. http://hdl.handle.net/10400.14/16738.

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As ilusões sonoras sempre exerceram um grande fascínio sobre os seres humanos. Destas, a que mais nos fascinou e revelou ter maior potencial musical por explorar foi a Ilusão Sonora da Escala de Shepard. Esta ilusão é uma escala musical dividida em 12 partes iguais, que ao ser escutada gera a sensação de perpetuidade sonora. Pelo facto, de ser constituída por sons ambíguos (i.e., o Som de Shepard) em termos de percepção de altura sonora (provavelmente conseguiremos identificar o nome da nota musical do som, mas teremos muita dificuldade em determinar a oitava a que pertence) permite cria

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