Directional Hearing in Insects and Other Small Animals: The Physics of Pressure-Difference Receiving Ears

摘要: In many animals the eardrums receive sounds at both external and internal surfaces, are responding to vectorial difference between sound pressures. Eardrum motion is a necessary part of sensory transduction process, it correlates strongly with ear directionality. The pressure acting on eardrum can be measured by first calibrating vibration only its surface then using vibrations for estimating amplitude phase sound(s) inner surface.