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VGU RESEARCH REPOSITORY


Please use this identifier to cite or link to this item: https://epub.vgu.edu.vn/handle/dlibvgu/572
Title: English speech recognition
Authors: Nguyen Hoang Vinh Khang 
Keywords: English speech recognition
Issue Date: 2015
Publisher: Vietnamese-German University
Abstract: 
Linear predictive coding (LPC) is a digital signal processing method for pattern recognition such as image and speech recognition. In order to be recognized, speech signal has to be processed and extract the frequencies corresponding to the pronunciation of the speech. Based on the theory of LPC, a simple isolated word speech recognition system is developed which is capable of recognizing five vowel letters of the alphabet: a, e, i, o, u. However, the characteristic features are different across subjects. Therefore, a training database is required for the methods of recognition. Specifically, the analyzed recorded speech of a subject can be recognize if the subject's training data is included in the training database.
During the development of the system, the recognition results are often wrong and the problem is identified as the difference between the pitches of male voice and female voice. Therefore, a further research for an algorithm called simple inverse filter tracking (SIFT) pitch detector is required for identifying the gender of speakers. Overall, the speech recognition system using LPC can automatically identify the gender of speakers and recognize the content of their speech.
URI(1): http://epub.vgu.edu.vn/handle/dlibvgu/572
Rights: Attribution-NonCommercial 4.0 International
Appears in Collections:Electrical Engineering and Information Technology (EEIT)

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