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Thys, Noel. "Hearing loss simulation". Thesis, Peninsula Technikon, 2000. http://hdl.handle.net/20.500.11838/1127.
Pełny tekst źródłaThis document gives a report on the research that has been done to simulate hearing loss. People working with the hearing impaired have no idea of what and/or how the hearing impaired person hears sound. An instrument that enables a normal hearing person to hear what a hearing impaired person hears, is referred to in this document as a Hearing Loss Simulator (HLS). An investigation of the feasibility and practicability of the abovementioned instrument, has led to the development of the HLS by making use of a distinct type of technology called Digital Signal Processing (DSP) technology. Before hearing loss can be simulated, the hearing loss first needs to be determined. A study of different procedures and methods for screening hearing has led to the incorporation of an existing instrument called an Audiometer. An audiometer is an instrument that determines the hearing loss by making use of pure tone sine waves. The results are then plotted on a graph called an Audiogram. The results of other methods that determine the hearing loss can also be transferred to the Audiogram. The Audiogram's information which is, in fact, the frequency response of the ear, is stored in a computer and is utilized to realize the HLS function. Six different DSP based methods were studied to shape any audio information according to a specific frequency response. The optimum method was identified and then implemented. The various methods are the following: Filter bank method Inverse Discrete Fourier Transforms (IDFT) method Inverse Fast Fourier Transforms (IFFT) method Chirp-z method Wavelet method Yule-walker method The ITFT method was identified as the optimum method and was therefore implemented. The algorithm to realize this method, was carried out by doing the IFFT calculation on computer and subsequently doing the filtering on a DSP processor called an ADSP-2181 processor. The audio information under investigation is fed into the instrument, it is then filtered according to the audiogram information and then sent out again. Any normal hearing person who wants to investigate the hearing impairment of the hearing impaired person can listen to sound reproduction through either a set of headphones or through a free field. This process is referred to in this dissertation as Hearing Loss Simulation.
Foundation of Research and Development
Davids, Ronel Sanet. "Experiences of hearing parents regarding their child’s hearing loss". University of the Western Cape, 2013. http://hdl.handle.net/11394/4820.
Pełny tekst źródłaOverwhelming evidence suggests that 90% of children with a hearing loss are born to hearing parents. Research indicates that often these hearing parents are ill-informed about the cause and type of hearing loss their child has, leading the hearing parents to feelings of grief and disempowerment. Many hearing parents at the time of the diagnosis experience emotional turmoil as the diagnosis is often unexpected, resulting in a plethora of questions asked. The research approach for the study was qualitative in nature as it set out to explore and describe the experiences of hearing parents of their child’s hearing loss. A phenomenological strategy of design was employed to capture the lived experience from the hearing parents. Data was collected by means of unstructured individual in-depth interviews with 11 hearing parents. Volunteer and snowball sampling were implemented so as to access hearing parents whose children had been diagnosed with hearing loss. Data was analysed according to Creswell (2007) and Klenke (2008) and the trustworthiness of the qualitative study was evaluated against the criteria that Guba described in Krefting (1991). Ethical considerations, such as voluntary participation, informed consent, confidentiality, anonymity, no harm done and debriefing, were adhered to. After the conclusion of the research analysis, the findings of the research were discussed and recommendations were made. The findings of the recommendations spoke to the better understanding of the emotions and challenges of hearing parents as well as putting forward suggestions for supportive coping mechanisms to be put in place to support hearing parents whose children have been diagnosed with a hearing loss.
Jones, Nicholas Spencer. "Hyperlipidaemia and hearing loss". Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265047.
Pełny tekst źródłaJohnson, Earl E. "Fitting a Hearing Aid to Conductive Hearing Loss and Realistic Expectations When Fitting a Hearing Aid to Sensorineural Hearing Loss". Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/1740.
Pełny tekst źródłaThomas, Elizabeth Anne. "Type 2 diabetes, hearing loss, and contributors to hearing loss in older Mexican Americans". Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. 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:3378510.
Pełny tekst źródłaMacker, Julie. "Childhood Hearing Loss and its Stress on Hearing Families". ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/1413.
Pełny tekst źródłaAl, Jindan Reem Yussuf. "Hearing loss and bacterial meningitis". Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499828.
Pełny tekst źródłaVas, Venessa Firmin. "The biopsychosocial impact of hearing loss on people with hearing loss and their communication partners". Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/47506/.
Pełny tekst źródłaMadsen, Sara Miay Kim. "Effects of hearing loss and hearing aids on music perception". Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709106.
Pełny tekst źródłaMcKenzie, Andrew Rayner. "An adaptive response hearing aid for high frequency hearing loss". Thesis, University of Southampton, 1988. https://eprints.soton.ac.uk/52267/.
Pełny tekst źródłaMpholo, Lebogang Thateng. "Incidence of hearing loss in young and elderly patients following spinal anaesthesia for cystoscopy". Thesis, University of Limpopo ( Medunsa Campus ), 2011. http://hdl.handle.net/10386/415.
Pełny tekst źródłaIntroduction: Multiple studies have described a variable incidence of transient hearing loss (hypoacousis) from 0.4% to 40% after subarachnoid block, especially in the low-frequencies range (125 – 500 Hz) (1, 2). The mechanism of transient hypoacousis is attributed to leakage of cerebrospinal fluid, which leads to a decrease in perilymph pressure within the cochlear. Hypothesis: The study hypothesis was based on an assumption that hearing loss is more frequent in young patients who undergo spinal anaesthesia in comparison with elderly patients. Objective: 1) To determine the incidence of hearing loss after spinal anaesthesia in the young versus elderly patients. Materials and Methods: Ninety-eight male patients (ASA 1 - 11) scheduled for cystoscopy under spinal anaesthesia were recruited for the study. Recruitment of patients for the study was age-dependent and was divided into two groups: One group (49 patients) had patients aged between 17 and 44 years (Group Y) and the other group had 49 patients aged between 45 and 77 years made up group two (GROUP E). Subarachnoid injection at L3-4 was performed using a standard 22-gauge Quincke spinal needle with patients in the sitting position and 2,5 ml to 3 ml of 0.5% isobaric bupivacaine was administered. Patients were evaluated on the day before spinal anaesthesia by pure tone audiometry at three different frequency sounds viz. 125 – 500 Hz (Low frequency), 500 – 2000 Hz (Speech frequency) and at 2000 – 4000 Hz (High frequency). This assessment was repeated 48 hours after the spinal block was given. Statistical Analysis: Analysis was descriptive providing information on the mean (or median) and standard deviation of the variables for each of the two groups. The results of the audiometry were analyzed using repeated measures analysis of variance and transformation to p-value. Differences in outcomes of the study between the two groups were recorded as being statistically significant if p-value is ≤ 0.05. Results: No patient from the two groups developed hearing loss either at low or high frequencies. However, there was a statistically significant improvement in audiometric results (p-value ranging from 0.0001 and 0.063) 48 hours post-surgery in the elderly group as compared with patients in the younger group. Conclusion: The study revealed no hearing loss post-spinal anaesthesia in both groups. It did, however, show that the elderly group have better hearing acuity at all three frequency levels of sound compared to the younger group after spinal anaesthesia.
Gallagher, Nicola Emma. "Diet, hearing loss and healthy ageing". Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726350.
Pełny tekst źródłaCullen, J. R. "Sudden hearing loss : an animal model". Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326426.
Pełny tekst źródłaWinter, Andrew John. "Hearing loss in experimental bacterial meningitis". Thesis, University of Birmingham, 1997. http://etheses.bham.ac.uk//id/eprint/32/.
Pełny tekst źródłaHilton, Jennifer Maglona. "Progressive hearing loss in mouse mutants". Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610680.
Pełny tekst źródłaTan, Christine Marie. "Tinnitus and patterns of hearing loss". Thesis, University of Essex, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549282.
Pełny tekst źródłaSeeman, Scott E. "Informational Masking and Sensorineural Hearing Loss". The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250704738.
Pełny tekst źródłaMcCombe, Andrew Wightman. "Wind noise, hearing loss and motorcyclists". Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/20669.
Pełny tekst źródłaGrinstead, Geraldine LaCourt. "The relationship between self-reported hearing handicap and hearing loss formulae /". The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487586889190317.
Pełny tekst źródłaArioz, Umut. "Developing Subject-specific Frequency Lowering Algorithms With Simulated Hearing Loss For The Enhancement Of Sensorineural Hearing Loss". Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614929/index.pdf.
Pełny tekst źródłaDaney, Samantha. "Improving Outcomes for Children At-Risk for Hearing Loss". University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353.
Pełny tekst źródłaPriwin, Claudia. "Bone anchored hearing aids (BAHAs) in children /". Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-757-X/.
Pełny tekst źródłaKöbler, Susanne. "Bilateral hearing aids for bilaterally hearing-impaired persons - always the best choice? /". Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-067-1/.
Pełny tekst źródłaBredenkamp, Corné-Louise. "Age related hearing loss and conversation before and after hearing aid fitting /". Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-10222007-143520.
Pełny tekst źródłaStegman, Robin Fern. "Hearing Parents of Children With Hearing Loss: Perceptions of the IEP Process". ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/2336.
Pełny tekst źródłaNakashima, T., T. Yoshida, S. Nakata, M. Teranishi, I. M. Ishida, S. Naganawa i M. Sugiura. "Vestibular aqueduct in sudden sensorineural hearing loss". Cambridge University Press, 2008. http://hdl.handle.net/2237/14312.
Pełny tekst źródłaPhelan, Valerie Ann. "Risk factors for hearing loss in adolescents". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62932.pdf.
Pełny tekst źródłaPussegoda, Kusala. "The pharmacogenomics of cisplatin-induced hearing loss". Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42203.
Pełny tekst źródłaRichardson, Martin Paul. "Hearing loss during bacterial meningitis in children". Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243780.
Pełny tekst źródłaCheung, Mei-chi Dilys, i 張美詞. "Noise-induced hearing loss: conservation and effects". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31253106.
Pełny tekst źródłaJordan, Chris Gyula. "Noise induced hearing loss in occupational motorcyclists". Thesis, University of Ulster, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414070.
Pełny tekst źródłaLum, David Soleau. "Further evaluation of a hearing loss simulator". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36988.
Pełny tekst źródłaIncludes bibliographical references (p. 74-76).
by David Soleau Lum.
M.Eng.
Cheung, Mei-chi Dilys. "Noise-induced hearing loss : conservation and effects /". Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14709223.
Pełny tekst źródłaSahota, Raguwinder Singh. "Noise-induced hearing loss : treatment and prevention". Thesis, University of Leicester, 2017. http://hdl.handle.net/2381/40043.
Pełny tekst źródłaEager, Katrise Mary. "Rehabilitation of unilateral profound sensorineural hearing loss with a bone anchored hearing aid". University of Western Australia. School of Surgery, 2010. http://theses.library.uwa.edu.au/adt-WU2010.0061.
Pełny tekst źródłaDavids, Ronel Sanet. "The development of guidelines for hearing parents parenting a children with hearing loss". University of the Western Cape, 2020. http://hdl.handle.net/11394/7736.
Pełny tekst źródłaParenting children with a hearing loss presents hearing parents with unique parenting challenges. Adapting to and managing these challenges is dependent on parents’ personal and social support as well as the resources available to them. There is limited research regarding hearing parents’ personal and social support and access to appropriate resources. In order to bridge this gap, the aim of the study was to develop guidelines for hearing parents parenting children with a hearing loss. A mixed methods approach with a sequential explanatory design using a two-phased approach was employed in this study. Phase 1 endeavoured to identify the problem and explore the needs of parents by using a staged approach. The sample in this phase included 103 participants in the quantitative study and 13 participants in the qualitative study. Phase 2 applied a consensus workshop made up of two rounds: Round 1 comprised a panel of experts, namely, academics in the field of child, family, and disability studies, and Round 2 included a panel of stakeholders comprised of hearing parents, professionals, Deaf mentors, and leaders working within the field of hearing loss. The purpose of the workshop was to reach consensus on the development of guidelines. From this research, a number of guidelines emerged for parents, focusing on:1) early intervention programmes for hearing parents and children diagnosed with a hearing loss, highlighting guidance and counselling for parents on early identification and screening programmes; 2) the need for social and emotional support to deal with the emotional impact of the diagnosis on the family, the parents, as well as the child with a hearing loss; 3) access to resources and information which is comprehensive and unbiased, allowing parents to make informed choices; and 4) support for communication intervention whereby parents are offered unbiased support in terms of communication options for their children. This study has important implications for the collaboration and partnerships between parents, social services (social workers), and health and family practitioners for the provision of family-centred practices.
Schairer, Kim, Douglas H. Keefe, Denis Fitzpatrick, Daniel Putterman, Elizabeth Kolberg, Angie Garinis, Michael Kurth, Kara McGregor, Ashley Light i M. P. Feeney. "Wideband Transient Otoacoustic Emissions in Ears with Normal Hearing and Sensorineural Hearing Loss". Digital Commons @ East Tennessee State University, 2018. https://doi.org/10.1121/1.5068081.
Pełny tekst źródłaOlsen, Henrik L. "Supra-threshold hearing loss and wide dynamic range compression /". Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-921-8.
Pełny tekst źródłaGranberg, Sarah. "Functioning and disability in adults with hearing loss : the preparatory studies in the ICF Core sets for hearing loss project". Doctoral thesis, Örebro universitet, Institutionen för hälsovetenskap och medicin, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-45274.
Pełny tekst źródłaFunding agency: Oticon Foundation; Hörselforskningsfonden (Swedish HearingResearch Foundation); the Foundation for Audiological Research (FAR) Forskningskommitten, Region Örebro County
Pereira, Sónia Lopes. "Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations". Master's thesis, Faculdade de Ciências Médicas, 2013. http://hdl.handle.net/10362/10862.
Pełny tekst źródłaCohen, Romy. "Influential factors in driving confidence among hearing-impaired older adults in Cape Town". Master's thesis, Faculty of Health Sciences, 2020. http://hdl.handle.net/11427/32182.
Pełny tekst źródłaAas, Sverre, i Tron Vedul Tronstad. "Diffusion-Based Model for Noise-Induced Hearing Loss". Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8761.
Pełny tekst źródłaAmong several different damaging mechanisms, oxidative stress is found to play an important role in noise-induced hearing loss (NIHL). This is supported by both findings of oxidative damage after noise exposure, and the fact that upregulation of antioxidant defenses seem to reduce the ears susceptibility to noise. Oxidative stress mechanisms could help explain several of the characteristics of NIHL, and we therefore believe that it would be advantageous to estimate noise-induced hearing impairment on the basis of these, rather than the prevailing energy based methods. In this thesis we have tried to model progress of NIHL using diffusion principles, under the assumption that accumulation of reactive oxygen species (ROS) is the cause of hearing impairment. Production, and the subsequent accumulation, of ROS in a group of outer hair cells (OHCs) is assessed by different implementations of sound pressure as in-parameter, and the ROS concentration is used in estimation of noise-induced threshold shift. The amount of stress experienced by the ear is implemented as a summation of ROS concentration with different exponents of power. Measured asymptotic threshold shift (ATS) values are used as a calibrator for the development of threshold shifts. Additionally the results are evaluated in comparison to the standards developed by the International Organization for Standardization (ISO) and the American Occupational Safety and Health Administration (OSHA). Results indicate that ROS production is not directly proportional to the sound pressure, rather anaccelerated formation and accumulation for increasing sound pressure levels (SPLs). Indications are also that the correlation between concentration of ROS and either temporary threshold shift (TTS) and/or permanent threshold shift (PTS) is more complex than our assumption. Because our model is based on diffusion principles we get the same tendency of noise-induced hearing loss development as experimentally measured TTS development. It also takes into account the potentially damaging mechanisms which occur during recovery after exposure, and has the ability to use TTS data for calibration. We therefore suggest that modeling of ROS accumulation in the hair cells could be used advantageously to estimate noise-induced hearing loss.
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Fedt, Lauren Alexandra, i Lauren Alexandra Fedt. "Teleaudiology: Clinical Outcomes from Adults with Hearing Loss". Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625383.
Pełny tekst źródłaDahlström, Jennie, i Hanna Frohm. "Individual Experiences of Hearing Loss in South Africa". Thesis, Örebro universitet, Hälsoakademin, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-11032.
Pełny tekst źródłaLeung, Kwong-ki. "Hearing loss in school children with down syndrome". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B3798679X.
Pełny tekst źródłaHarris, Lori Gayle. "Social-Emotional Development in Children with Hearing Loss". UKnowledge, 2014. http://uknowledge.uky.edu/commdisorders_etds/4.
Pełny tekst źródłaLeung, Kwong-ki, i 梁廣基. "Hearing loss in school children with down syndrome". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B3798679X.
Pełny tekst źródłaGraf, Isaac John 1972. "Simulation of the effects of sensorineural hearing loss". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42761.
Pełny tekst źródłaIncludes bibliographical references (leaves 103-112).
by Isaac John Graf.
M.S.
Asbeck, Alan T. (Alan Thomas) 1980. "Analysis of frequency-smearing models simulating hearing loss". Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87379.
Pełny tekst źródłaIncludes bibliographical references (leaves 189-191).
by Alan T. Asbeck.
M.Eng.
li, yiwen. "Predicting Hearing Loss Using Auditory Steady-State Responses". Digital WPI, 2009. https://digitalcommons.wpi.edu/etd-theses/84.
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