As a bridge from the sound signal in the air to the sound perception of the inner ear auditory receptor. the tympanic membrane and ossicular chain of the middle ear transform the sound signal in the outer ear through two gas-solid and solid-liquid conversions. In addition. through the lever principle formed by three auditory ossicle structure. https://mysocialfeeder.com/story4381568/the-role-of-leadership-agility-and-organizational-commitment-toward-organizational-readiness-for-changes-in-public-islamic-universities-of-central-java-in-conditions-of-vuca-era