四、升号调(一)全音与半音音与音之间在音的高度上的距离称之为音程。音程的基本标准单位是半音(也称小二度)。在两个音之间没有比半音更小的距离了,其它各种音程都是半音的整倍数,如全音包含两个半音、小三度包含三个半音、大三度包含四个半音等。乐音体系中七个基本音级C、D、E、F、G、A、B,它们之间在音高上的距离可以用半音和全音清楚地标明: Four, liter tone (a) the whole tone and the distance between the half tone and sound at the pitch of the sound is called the interval. The basic standard unit of interval is semitone (also called second degree). There is no smaller distance between the two tones than the semitones, and the rest of the intervals are all multiples of the semitones, including two semitones in full tone, three semitones in third third, four semitones in third major, and so on. The seven fundamental sound levels C, D, E, F, G, A, B in the musical system are clearly marked on the pitch by the semitones and the whole sound: