RECEIVER OPERATING CHARACTERISTICS MEASURE FOR THE RECOGNITION OF STUTTERING DYSFLUENCIES USING LINE SPECTRAL FREQUENCIES

Nahrul Khair Alang Rashid,Wahju Sediono,Sabur Ajibola Alim,Nik Nur Wahidah Nik Hashim

doi:10.31436/iiumej.v18i1.578

Nahrul Khair Alang Rashid, Wahju Sediono + Show 2 more

Open Access

https://doi.org/10.31436/iiumej.v18i1.578

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Abstract

Stuttering is a motor-speech disorder, having common features with other motor control disorders such as dystonia, Parkinsonâ€™s disease and Touretteâ€™s syndrome. Stuttering results from complex interactions between factors such as motor, language, emotional and genetic. This study used Line Spectral Frequency (LSF) for the feature extraction, while using three classifiers for the identification purpose, Multilayer Perceptron (MLP), Recurrent Neural Network (RNN) and Radial Basis Function (RBF). The UCLASS (University College London Archive of Stuttered Speech) release 1 was used as database in this research. These recordings were from people of ages 12y11m to 19y5m, who were referred to clinics in London for assessment of their stuttering. The performance metrics used for interpreting the results are sensitivity, accuracy, precision and misclassification rate. Only M1 and M2 had below 100% sensitivity for RBF. The sensitivity of M1 was found to be between 40 & 60%, therefore categorized as moderate, while that of M2 falls between 60 & 80%, classed as substantial. Overall, RBF outperforms the two other classifiers, MLP and RNN for all the performance metrics considered.

Highlights

Stuttering is a neurological trait that may involve specific abnormalities of speech motor control in the human brain
Stuttering is primarily viewed as a motor-speech disorder, sharing features with other kinds of motor control disorders such as dystonia, Parkinson’s disease, and Tourette’s syndrome
The results are given as percentages for sensitivity, accuracy, precision, and misclassification rate

Summary

Introduction

Stuttering is a neurological trait that may involve specific abnormalities of speech motor control in the human brain. Stutterers experience reduced blood flow and decreased or increased electrical activity in areas of the brain associated with speech production. The cause of this malfunction is linked to the brain [1, 2]. Stuttering is a severe complication focused on by speech pathologists [3, 4]. Stuttering is primarily viewed as a motor-speech disorder, sharing features with other kinds of motor control disorders such as dystonia, Parkinson’s disease, and Tourette’s syndrome. There is evidence that linguistic factors play a role in stuttering [5]

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