哼唱检索是基于旋律内容的音乐检索，指用户通过唱出歌词或者哼出歌曲旋律作为输入检索数据，从旋律数据库中检索相对应音乐的检索方法；相对于传统的基于文本的音乐检索，哼唱检索给用户提供了更便捷友好的查询方式，不仅可以作为基于文本的音乐检索一种有益补充，而且还能带来更佳的用户体验。-Humming the melody content retrieval is based music retrieval, refers to the user through the lyrics or hum the s

this audio retrieval based on the feature extraction such as FFT, STFT, and Power Spectral Density-this is audio retrieval based on the feature extraction such as FFT, STFT, and Power Spectral Density