Abstract
This paper points out that the human auditory sensitivity is enhanced by the resonance of the organ of Corti and the leverage of stereocilia. We supposed a simple common vibration model for both the organ of Corti and the stereocilia, where they are represented by 2 parallel linked levers. The model suggests the longitude of stereocilium reinforces vibration detection with elasticity leverage. We also manufactured a device article obedient to the model, and, through 4 experiments, measured the system transfer function with static/dynamic and concentrated/distributed loads. The device response had a resonance peak in both concentrated and distributed excitation condition. We presume this resonance enhances the frequency resonance and vibration amplification on human cochlea.
