弹奏的

• After researching on the midi norms and summarizing the regulations of many students " playing samples , we ' ve approached a way to solve the problem which can divide and discern the harmony accurately , whatever the playing speed or intensity . that is , associate the time - interval between each chord with midi denotational message
  在对midi消息进行了研究并对学生弹奏的和弦样本总结规律的基础上，采用了时间间隔和midi标志信号相结合的办法，对于不同速度和强度的弹奏都能够较好的分离和识别。