experimental mean pitch

例句：

1. 1. The scientists conducted an experiment to determine the mean pitch of the birds in the forest.
   科学家们进行了一个实验，以确定森林里鸟的平均音调。
2. 2. The physicist calculated the mean pitch of the sound waves using a mathematical model.
   物理学家使用数学模型计算了声波的平均音调。
3. 3. In music, the mean pitch is often used to create a sense of harmony and balance.
   在音乐中，平均音调常常被用来创造和谐和平衡的感觉。