Linear discriminant analysis based approachfor automatic speech recognition of urdu isolated words

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Abstract

Urdu is amongst the five largest languages of the world and enjoys extreme importance by sharing its vocabulary with several other languages of the Indo-Pak. However, there has not been any significant research in the area of Automatic Speech Recognition of Urdu. This paper presents the statistical based classification technique to achieve the task of Automatic Speech Recognition of isolated words in Urdu. For each isolated word, 52 Mel Frequency Cepstral Coefficients have been extracted and based upon these coefficients; the classification has been achieved using Linear Discriminant Analysis. As a prototype, the system has been trained with audio samples of seven speakers including male/female, native/non-native and speakers with different ages while the testing has been done using audio samples of three speakers. It was determined that majority of words exhibit a percentage error of less than 33%. Words with 100% error were declared to be bad words. The work reported in this paper may serve as a strong baseline for future research work on Urdu ASR, especially for continuous speech recognition of Urdu.

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Ali, H., Ahmad, N., Zhou, X., Ali, M., & Manjotho, A. A. (2013). Linear discriminant analysis based approachfor automatic speech recognition of urdu isolated words. Communications in Computer and Information Science, 414, 24–34. https://doi.org/10.1007/978-3-319-10987-9_3

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