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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Comparison of different forms of frequency lowering in digital hearing aids for people with dead regions in the cochlea

Salorio Corbetto, Marina January 2015 (has links)
No description available.
22

Sound synthesis in a teaching machine for tactile recognition

Presser, Karl David, 1943- January 1968 (has links)
No description available.
23

Most comfortable loudness levels : live versus recorded determination and relationship to acoustic reflex thresholds

Matusek, Carol S. January 1979 (has links)
The purpose of this study was to investigate the relationship between live and recorded determinations of most comfortable loudness levels (MCL's) and to determine if a relationship existed between MCL's, tolerance levels (TL's), and acoustic reflex thresholds so that further research might be conducted regarding the use of acoustic impedance measures in hearing aid fitting.Thirty normal hearing female subjects were tested in this investigation. MCL's using live and recorded stimuli, TL's, and contralateral and ipsilateral acoustic reflex thresholds were obtained for each subject. Correlation coefficients were computed to determine if a relationship existed between any of the measurements.It was concluded that live voice stimuli yielded highly equivalent results to recorded stimuli in finding MCL's. Acoustic reflex thresholds were found to be poor predictors of MCL's and TL's. Before acoustic reflex measurements can be used in hearing aid fitting procedures, further research is warranted.
24

A comparison of different brands of directional hearing aids

Lowe, Richard Gregory January 1975 (has links)
The purpose of this investigation was to determine whether five different brands of directional hearing aids would perform with the same efficiency. Using fifteen normal hearing subjects, the efficiency of the directionality of the aids was first evaluated by obtaining pure tone and. speech reception thresholds from both in front and behind each listener. To evaluate the hearing aids' effects on subjects' word discrimination ability, discrimination scores were obtained both in quiet and noise. Finally, each subject expressed his feelings regarding the performance of each aid using a rating scale.The results indicated there was a significant difference in the overall attenuation abilities of the aids, and the aids significantly attenuated some threshold conditions pore efficiently than others. The overall discrimination scores for the aids did not differ significantly, but all five aids provided a significantly higher score in quiet as compared to noise. The results of the subjective ratings indicated no significant differences among the five aids.
25

Design and fabrication of an air-bridge microphone /

Jeran, Paul L. January 1992 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1992. / Typescript. Includes bibliographical references (leaves 54-55).
26

Development of a self-report questionnaire to evaluate hearing aid outcomes in Chinese speakers

Han, Na. January 2008 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2008. / Includes bibliographical references (p. 116-134) Also available in print.
27

Rejection of hearing aid use among Hong Kong elderly

Wong, Wai-yi, Peggy, January 2005 (has links)
Thesis (B.Sc)--University of Hong Kong, 2005. / "A dissertation submitted in partial fulfilment of the requirements for the Bachelor of Science (Speech and Hearing Sciences), The University of Hong Kong, June 30, 2005." Also available in print.
28

Prediction of the efficiency of hearing aids from the audiograms

Hedgecock, LeRoy Darien. January 1949 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1949. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [180]-185).
29

Frequency response and speech discrimination correlates of the open earmold effect

Frank, Thomas Alan, January 1972 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1972. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
30

Preferred frequency responses for Cantonese-speaking hearing aid users /

Wong, C. W. January 2000 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 46-51).

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