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Children with hearing impairment are having lack of adequate auditory input, hindering speech development. They exhibit reduced speech intelligibility compared to their peer groups. Some frequently occurring articulatory errors have been associated with this lack of intelligibility. Thus the current study was aimed to evaluate the articulatory errors and typical spectral characteristics of speech of children with hearing impairment. The study was conducted on two groups - 20 with hearing impairment and 20 with normal hearing, in the age range of 3 to 8 years. The stimuli included words embedded with stop consonants (/p/,/b/,/t̪/,/d̪/,/ʈ/,/ɖ/, /k/,/ɡ/). The speech analysis is performed perceptually and objectively by the experienced speech language pathologist. Perceptual analysis included evaluation of Substitution, Omission, Distortion, and Addition errors of the words embedded with plosives. The acoustic analysis included evaluating speech spectrum for burst duration, voice onset time, and spectral movement (mean, skewness, and kurtosis) of plosives using Wave Surfer and MATLAB software's. The results indicated good correlation between the spectral measures and place of articulation of the plosives. The results also highlighted significant differences across the groups in the perceptual and spectral measures of the plosives.
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