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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.
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Showing 61 to 70 of 391 (0.037 seconds)| 61 |
Middle ear resonant frequency values in geriatric subjects : a multifrequency tympanometric studyLeblond, Catherine Louise January 1990 (has links)
Based on anatomical changes known to occur in the middle ear with aging, the purpose of this study was to compare middle ear resonant frequency values of geriatric subjects to those of young adults. Measurements were obtained with two different methods: sweep frequency tympanometry and discrete multifrequency tympanometry. Results from the two methods of measurement were also compared. Furthermore, intra-subject, inter-judge, and longitudinal reliability were examined for each measurement method.
Results showed no significant difference between the two age groups. However, resonant frequency values obtained with the two measurement methods differed significantly (p < 0.05). Intra-subject and longitudinal reliability measures were significantly higher for the discrete multifrequency method than for the sweep frequency method. Inter-judge reliability was 95% for both measurement methods.
We therefore concluded that age does not have a significant effect on middle ear resonant frequency values. It follows that normative resonant frequency data can be applied to adults of all age groups. Furthermore, the method used to measure resonant frequency has a significant effect on the values obtained, and comparisons of resonant frequency data should not be made across measurement methods. Although we were unable to determine which measurement method is most valid, the discrete multifrequency method is more reliable within subjects and over time. / Medicine, Faculty of / Audiology and Speech Sciences, School of / Graduate
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A comparison of two systems used in the elctro-acoustic evaluation of hearing aidsFrye, Sallie Ann 01 January 1974 (has links)
The purpose of this study is to compare the Fonix Type 5000 Hearing Aid Test Set to the B&K system by testing the same hearing aids with both systems in order to determine whether there are any important differences between the measurements obtained using the two systems. Frequency response has been chosen as the measure on which the comparisons will be made.
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How does the formation of an auditory unit affect the perception of a changing timbre?Crum, Poppy. January 1999 (has links)
No description available.
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Frequency discrimination of deaf children and its relationship to their achievement in auditory training.Strizver, Gerald 01 January 1957 (has links) (PDF)
No description available.
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A Preliminary Investigation of the Audiopupillary Response as an Adjunct to Objective AudiometryRatliff, Sandra Sue January 1962 (has links)
No description available.
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The effect of static air pressure in the external auditory meatus on hearing acuity /Hansen, Ronald Gordon January 1954 (has links)
No description available.
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An evaluation of two pulse-type tests of hearing /Anderson, Thomas Brown January 1952 (has links)
No description available.
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Differential effect of breathing selected gases upon temporary auditory-threshold shift /Nixon, Charles William January 1960 (has links)
No description available.
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The Effects of selected frequency distortion upon the perception of speech by hard-of-hearing and normal-hearing listeners /Perez, Emilio January 1971 (has links)
No description available.
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Signal detection and personnel selection in identification audiometry /Hillis, James William January 1963 (has links)
No description available.
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