Research on the Retrieval Algorithm of Speech Keyword Based on DTW

According to the query items entered by user, the speech retrieval is a data mining technology to retrieve and return the necessary results form massive audio data. In this paper, the history of speech retrieval is summarized and its necessity of studying is analyzed. On this basis, starting from the search of key words, the dynamic time regulation is derived in detail, and it is simulated by MATLAB. According to the results of MATLAB performance analysis, the optimization direction of speech keyword retrieval algorithm is explored.