本文運用「時距定量音頻分析」TS/FM（Time Step / Frequency Mode）的研究模式，以固定時距（Time Step）的方法，對客家箏樂《出水蓮》乙凡音之按顫手法模式進行分析。透過聲學量測工具、以準尺的觀點，對客家箏派代表樂人饒寧新的演奏進行音頻樣態的分析。研究發現同一樂人在不同時間場域演奏的做韻手法，有著「異中求同」的慣性模式，亦具有「同中求異」的手法變化，呈現出客家箏樂「乙凡調」音律波動的特徵。

The method, TS/FM (Time Step / Frequency Mode), is employed with fixed time step to analyze performing techniques of ‘An’ and ‘Zhan’ on the pitches of ‘Yi-Fan’ of Hakka Zheng work ‘Lotus Emerging out of Water’. By acoustic measurements, we analyze the tone frequency of the performance of Ning-xin Rao, a master musician of Hakka Zheng music. The study shows performances by the same musician at various time and in different places however exhibit many similarities but still contains variations which characterize the changing frequency on the pitch of ‘Yi-Fan’ of Hakka Zheng music.