How does cicada make sound?

The vocal organ of cicada is at the base of abdomen, covered with an eardrum like a drum, and vibrates to make sound.

Because the vocal cord muscles can flex about 654.38+00000 times per second, and the gap between the cover plate and the eardrum can play a role of * * *, so its vocal cord sound is particularly loud. The female cicada is a "dumb cicada" because her musical instrument structure is incomplete and she can't make a sound. The female cicada has no sound generator, so she becomes a "dumb cicada".

The male cicada has a large and round sound cover on both sides of the front abdomen, and there is an auditory sac and a tympanic membrane under the sound cover. When the muscles on the inner wall of vocal cords contract and vibrate, cicadas make sounds.