 Dear students, in this topic we shall discuss the frequency analysis by Cochlear. Dear students, Cochlear is a tono-typically tuned argon. That is, it is frequency-wise tuned argon. The tonotypic sensitivity, that is, the frequency sensitivity of Cochlear is due to two reasons. First reason is that the basilar membrane has variation in its width and stiffness along its length. Second reason is the placement of hair cells on the basilar membrane in a particular order. We shall discuss these variations of width and stiffness of basilar membrane and their effects. Basilar membrane is narrow and stiff, and it is more wider and more flexible at the apex of Cochlear. So, at different frequencies, its different portions vibrate, stimulating particular hair cells and sensory neurons. Jonsa hesa vibrate kerega, wohi hesa impulse generate kerega. The second feature of the basilar membrane is the placement of hair cells tuned to a particular frequency placed at particular positions in narrow bends. We can see that on the basilar membrane, the hair cells are arranged in lines and the hair lines are specific for a particular frequency. The tuning of the hair cells is due to the properties of channels that are open to the main frequencies. The resonance frequency of these cilia or these hair cell cilia is determined by the length of the stereocilia. Stereocilia kitte lambe hain usi saab se wo frequency ko receive krte hain. Cells with long hair are most sensitive to low frequency sounds, while cells with short hairs are tuned to high frequency sounds. Now, the sound variations which encounter the basilar membrane through its stiff base are tied to the stepis. The sound vibrations touch the basilar membrane or receive the basilar membrane which is comparatively stiff. This base vibrates immediately in response to pressure changes. These variations of frequency travel along the membrane from base toward the apex. As a result, they produce vibrations or displacement in the basilar membrane. Now, the region of maximum displacement of basilar membrane varies with sound frequency. This basilar membrane vibrates the most depending on the frequency of the sound. Membrane near the base undergoes largest deformation and resonates optimally at high frequencies. While the distant regions of the membrane which are near the apex, they vibrate maximally at low frequencies of sound. Dear students, now we shall discuss the frequency analysis by Cochlear. Different frequencies of incoming sound waves are sorted along the length of the basilar membrane. We can see here that the basilar membrane is sorted along the length of the basilar membrane. Every frequency has its own characteristic place. Dear students, the very low frequencies which are less than 200 Hz are compressed on a very limited region which is present at the apical end of the membrane.