This animation illustrates how the human cochlea, a structure in the inner ear involved in hearing, receives sound in the form of vibrations - it literally senses different sound frequencies at specific locations, as if it was a keyboard 🎹🤯 Sounds pass as vibrations through tiny bones in our ear to the cochlea. The basilar membrane in the cochlea senses different sound frequencies at specific locations. Vibrations from low-frequency tones are sensed at the farthest end of the basilar membrane.