DocumentCode :
2618497
Title :
Classification of voice disorders in children with cochlear implantation and hearing aid using multiple classifier fusion
Author :
Mahmoudi, Zeinab ; Rahati, Saeed ; Ghasemi, Mohamad Mahdi ; Asadpour, Vahid ; Tayarani, Hamid
Author_Institution :
Dept. of Biomed. Eng., Azad Univ. of Mashhad, Mashhad, Iran
fYear :
2010
fDate :
10-13 May 2010
Firstpage :
304
Lastpage :
307
Abstract :
Speech production and speech phonetic features gradually improve in children by obtaining audio feedback after cochlear implantation or using hearing aid. In this study, voice disorders in children with cochlear implantation and hearing aid are classified. 30 Persian children participated in the study, including 6 children in levels 1 to 3 and 12 in level 4. Voice samples of 5 isolated Persian words “mashin”, “mar”, “moosh”, “gav” and “mouz” are analyzed. 4 level for the voice quality are considered, the higher the level the less the speech disorders. “Frame-based” and “word-based” features are extracted from speech signal. Some of the frame-based features include fundamental frequency, formants and nasality and word-based features include phase space features and wavelet coefficients. For frame-based features, hidden Markov models are used as classifiers and for word-based features, neural network is used. After Classifiers fusion with three methods: Majority Voting Rule, Linear Combiner and Stacked fusion, the best classification rates are obtained using frame-base and word-base features excluding third to second formant ratio and MVR rule (level1:100%, level2: 93.75%, level3: 100%, level4: 94%). Output of the study can help speech pathologists to follow up voice disorder recovery in children with cochlear implantation or hearing aid.
Keywords :
cochlear implants; feature extraction; hidden Markov models; medical computing; medical disorders; medical signal processing; natural language processing; neural nets; paediatrics; speech; speech processing; speech synthesis; Persian children; Persian words; audio feedback; cochlear implantation; formants; frame-based feature; fundamental frequency; gav; hearing aid; hidden Markov models; linear combiner; majority voting rule; mar; mashin; moosh; mouz; multiple classifier fusion; nasality; neural network; phase space features; speech phonetic features; speech production; stacked fusion; voice disorders; wavelet coefficients; word-based feature; Accuracy; Chaos; Correlation; Hidden Markov models; Medical diagnostic imaging; Pediatrics; Classification; Cochlear implantation; Hearing aid; Voice disorders;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Sciences Signal Processing and their Applications (ISSPA), 2010 10th International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-7165-2
Type :
conf
DOI :
10.1109/ISSPA.2010.5605466
Filename :
5605466
Link To Document :
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