In this paper, the real-time realization of Automatic Speech Recognition (ASR) technology on common platform is investigated. Three points are focused in the paper as following aspects. Firstly, on the base of the ASR theory, the prime principles and the methods of speech front-end detection, LPC cepstrum coefficients, acoustic modeling and its similarity estimation are studied; Secondly, some ASR programs are developed with MATLAB. Through simulations, the specificity of usual algorithms and the methods of...