The ryuteki flute, which is said to be the predecessor of the shinobue is a seven-hole flute but the seven-hole shinobue and the ryuteki flute differ in their basic scale and internal structure.
先祖といわれる「龍笛」は「七孔」であるが、「7穴の篠笛」と「龍笛」の基本音階・内部構造は異なっている。