High and low sounds are discriminated cheifly by what in the human ear?

Question

High and low sounds are discriminated cheifly by what in the human ear?

Answer 1

The speed of vibration of the hammer, anvil and stirrup, drumming the music of life on the ear-drum.

Answer 2

To be more specific than the last answer, I think that

longer scilia transmit lower-frequency waves, and

shorter scilia transmit higher-frequency waves.

Answer 3

scilia, i think.