Thesis (M.Phil.) - University of Queensland, 2005. / Includes bibliography.

Thesis (M. Sc.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Thesis (M. Communication Pathology)--University of Pretoria, 1999. / Summary in English and Afrikaans. Includes bibliographical references.

Thesis (MTech (Electrical Engineering))--Peninsula Technikon, Cape Town, 2000. / This 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

No description available.

Thesis (MA)--Stellenbosch University, 1986. / INLEIDING: Gehoorgestremdheid impliseer 'n drieledige verlies - nie net die verlies van gehoor nie, maar as gevolg daarvan ook die van spraak en taal. Gehoorgestremdheid het 'n ernstige uitwerking op die intellektuele vermoe en emosionele lewe van die mens (Badenhorst, 1985). Navorsers in die sielkunde van gehoorgestremdheid kry te doen met struikelblokke. Die universum waaruit steekproewe saamgestel moet word, is beperk en die vakliteratuur is nie voldoende nie. Die beskikbare toetsmateriaal is beperk en al uitweg is om gebruik te maak van gestandaardiseerde toetse vir die normaalhorendes. Resultate wat op die wyse verkry word, voldoen nie aan die standaarde wat gestel word ten opsigte van betroubaarheid en geldigheid nie. Taal en kommunikasie is 'n belangrike voorvereiste vir die meeste vorms van sielkundige navorsing. Navorsing ten opsigte van die gehoorgestremde in die Republiek van Suid-Afrika word gekompliseer deur die bevolkingsamestelling en die taal wat gebesig word. Die blanke bevolking is hoofsaaklik Afrikaans- en Engelssprekend, terwyl die verskillende etniese groepe elkeen In taal van sy eie het. Die gehoorgestremdes vorm 'n bron van mensemateriaal wat nuttig gebruik kan word indien elke gehoorgestremde se volle potensiaal ontwikkel word. Kennis van die gehoorgestremde se moontlikhede en beperkinge is 'n noodsaaklike vereiste vir suksesvolle rehabilitasie van so 'n persoon.

Thesis (M.A.)--Washington State University. / Includes bibliographical references.

Thesis (Ed.D.)--Teachers College, Columbia University, 1969. / Typescript; issued also on microfilm. Sponsor: Ann M. Mulholland. Dissertation Committee: Frances P. Connor. Includes bibliographical references (leaves 100-108).

Please read the abstract in the section 00front of this document / Dissertation (MA (Communication Pathology))--University of Pretoria, 2006. / Speech-Language Pathology and Audiology / unrestricted

Thesis (M. Aud.)--University of Canterbury, 2009. / Typescript (photocopy). "February 2009." Includes bibliographical references (leaves 60-67). Also available via the World Wide Web.