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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1908

Title: AN ACOUSTIC ANALYSIS OF A PATHOLOGICAL SPEECH: THE CASE OF AN AMHARIC SPEAKING PERSON WITH FLACCID DYSARTHRIA
Authors: ABEBAYEHU, MESSELE
Advisors: Moges Yigezu
Copyright: 2008
Date Added: 13-Jan-2009
Publisher: Addis Ababa University
Abstract: It is an established fact that language is the chief distinctive feature of humans. Unfortunately, there are a number of individuals missing usage of language and/or speech partially or entirely, from the beginning or lately, momentarily or for a long time, usually for defined reasons or for reasons which cannot yet be explained. This work particularly attempts to investigate the extent of abnormality of the speech of an individual with Flaccid Dysarthria. The subject was diagnosed as a Primary Lateral Sclerosis patient, which is a progressive degenerative motorneuron disease, that is, nerve cells in the body gradually die off. It affects only some of the nerve cells in the body--those that control voluntary movement of muscles. The main objective of this study is to acoustically analyze the patient’s vowels, consonants, intonation contours and duration. Acoustic methods were employed to examine the speech of the patient. More specifically, the data were from solicitation and spontaneous utterances of the subject. They were digitally recorded, sampled and quantized, then fed into a speech analyzer software called Praat. The interpretations of the data were done on the basis of the facts revealed by the software. Accordingly, the patient’s vowels were found to be confined to the center of his oral cavity and have a hypernasal quality. The qualities of his consonants also showed how the problem is serious. Most of the consonants are so distorted that it is difficult to identify them on spectrograms. The suprasegmental aspects of his utterances also exhibit deviant patterns. Hence, the patient’s speech lacks intelligibility.
Description: A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES OF ADDIS ABABA UNIVERSITY IN PARTIAL FULFILMENT OF THE REQUIRMENTS OF THE DEGREE OF MASTER OF ARTS IN LINGUISTICS
URI: http://hdl.handle.net/123456789/1908
Appears in:Thesis - Teaching English as a Foreign Language

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