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In this work, a consistency analysis of duration parameter for Mandarin speech is presented. Found by an inspection on the pronunciation process of human beings, the consistency can be interpreted as a high correlation of a warping curve between the spectrum and the prosody intra a syllable. Through three steps in the procedure of the consistency analysis, the HMM algorithm is used firstly to decode HMM-state sequences within a syllable at the same time as to divide them into three segments.doi:10.5755/j01.itc.42.2.1745 fatcat:lcdwwegq7zdbdk7p7saye2fomy