Research on Music Emotion Intelligent Recognition and Classification Algorithm in Music Performance System

The music performance system works by identifying the emotional elements of to control lighting changes. However, if there is a recognition error, good stage effect will not be able create. Therefore, this paper proposes an intelligent emotion and classification algorithm in system. first part analyze features music, including acoustic features, melody audio features. Then, three kinds are combined together form feature vector set. In latter algorithm, it divides set into training samples test samples. trained using model based on neural network. And then, testing input model, which aiming realize emotion. result shows that kappa coefficient k values calculated proposed greater than 0.75, indicates results consistent with actual results, accuracy high. So, research purpose achieved.