关键词: 哼唱检索, 基频提取, 旋律匹配, 动态时间弯折

Abstract: Through analyzing the humming melodies pitch extraction and retrieval algorithm, a complete system framework of Query By Humming（QBH） is proposed. It includes the melody feature extraction and approximate melody matching in MIDI music database. The Mel Frequency Cepstral Coefficients（MFCC） is extracted. Through analyzing the theory of DTW algorithm, the cosine similarity of the delta duration sequence is added with the characteristics of the sound for performance improvement of the system. Experiments are conducted in a test set of 340 MIDI songs. The system gets a success rate of top-3 increased by 3.7% and a 16% time reduction.

Key words: query by humming, pitch track, melody match, dynamic time wrapping