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Comparisons of Speech Parameterisation Techniques for Classification of Intellectual Disability Using Machine Learning

Comparisons of Speech Parameterisation Techniques for Classification of Intellectual Disability Using Machine Learning

Gaurav Aggarwal, Latika Singh
Copyright: © 2020 |Volume: 14 |Issue: 2 |Pages: 19
ISSN: 1557-3958|EISSN: 1557-3966|EISBN13: 9781799805328|DOI: 10.4018/IJCINI.2020040102
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MLA

Aggarwal, Gaurav, and Latika Singh. "Comparisons of Speech Parameterisation Techniques for Classification of Intellectual Disability Using Machine Learning." IJCINI vol.14, no.2 2020: pp.16-34. http://doi.org/10.4018/IJCINI.2020040102

APA

Aggarwal, G. & Singh, L. (2020). Comparisons of Speech Parameterisation Techniques for Classification of Intellectual Disability Using Machine Learning. International Journal of Cognitive Informatics and Natural Intelligence (IJCINI), 14(2), 16-34. http://doi.org/10.4018/IJCINI.2020040102

Chicago

Aggarwal, Gaurav, and Latika Singh. "Comparisons of Speech Parameterisation Techniques for Classification of Intellectual Disability Using Machine Learning," International Journal of Cognitive Informatics and Natural Intelligence (IJCINI) 14, no.2: 16-34. http://doi.org/10.4018/IJCINI.2020040102

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Abstract

Classification of intellectually disabled children through manual assessment of speech at an early age is inconsistent, subjective, time-consuming and prone to error. This study attempts to classify the children with intellectual disabilities using two speech feature extraction techniques: Linear Predictive Coding (LPC) based cepstral parameters, and Mel-frequency cepstral coefficients (MFCC). Four different classification models: k-nearest neighbour (k-NN), support vector machine (SVM), linear discriminant analysis (LDA) and radial basis function neural network (RBFNN) are employed for classification purposes. 48 speech samples of each group are taken for analysis, from subjects with a similar age and socio-economic background. The effect of the different frame length with the number of filterbanks in the MFCC and different frame length with the order in the LPC is also examined for better accuracy. The experimental outcomes show that the projected technique can be used to help speech pathologists in estimating intellectual disability at early ages.