乐音音符基频识别

The recognition of the musical pitch

音乐识别的研究在很早就开始了,但识别系统的性能仍未达到满意的效果。通过研究乐音的声音和物理特性,该文提出一种短时自相关基音检测算法。实验证明,利用该文提出的方案,对于传统的自相关基音检测算法,可以提高基音频率提取的准确度,取得了较好的识别效果。

The research for music recognition has started long ago, yet recently the performance has not been satisfied. The thesis investigates the musical and physical characters of the musical sound, and advance an short-time auto- correlation pitch detection algorithms. The performance of this system shows that this solution greatly improves the precision of pitch detection toward traditionary auto-correlation pitch detection algorithms, and acquires better results.