Abstract
During the study of English sentence pronunciation evaluation system, we found that sentence pronunciation emotion and intonation evaluation are very important. Probabilistic neural network has been used to study English sentence pronunciation emotion, and DTW (Dynamic Time Warping) algorithm has been used in the intonation analysis. The probability neural network basic principle is introduced in this paper. An emotion recognition algorithm based on MFCC（Mel Frequency Cepstrum Coefficient）is present. The keynote and energy of the sentences are used to analyse the accuracy of the tones. The experimental results of the proposed method effectiveness are given.
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