For different pitches, pipes of different lengths are used: for very low pitches long, closed pipes are used; for very high pitches short, open pipes are used. 伯莎M.克拉克.科学通论.
How the Various Pitches are Produced. 伯莎M.克拉克.科学通论.
Varying pitches are obtained partly by the varying wind pressure of the musician; if he breathes fast, the pitch rises; if he breathes slowly, the pitch falls. 伯莎M.克拉克.科学通论.
This agrees with the law of vibrating strings which gives high pitches for short lengths. 伯莎M.克拉克.科学通论.
If she pitches to wind'ard, and brings the mast against the bilge, it's all Davy Jones for sure! 弗格斯·休姆.奇幻岛.
But come, fill a flagon, for it will crave some time to tune the harp; and nought pitches the voice and sharpens the ear like a cup of wine. 沃尔特·司各特.艾凡赫.