音高由三位数字组成：个位是表示 1~7 这七个音符 十位是表示音符所在的音区:1-低音，2-中音，3-高音 百位表示这个音符是否要升半音: 0-不升，1-升半音。音长最多由三位数字组成-Pitch by three numbers: a bit is that 1-7 of these seven notes ten is where the pitch is that note: 1- bass, 2- Alto, 3- Treble one hundred indicates th