Microphone Design Generalities

This lecture covers the theory behind microphones, including the relationship between sound pressure and diaphragm movement, transduction processes, and the different acoustic action modes impacting the diaphragm. It also discusses diaphragm movement as a mechanical resonator, conversions in velocity vs. elongation, and the force exerted on a microphone diaphragm by a plane wave. The instructor explores the cascades allowing the respect of specifications and the various types of microphones based on pressure and pressure gradient. Additionally, the lecture delves into the electromechanical coupling equations and the phase effects on the diaphragm due to non-uniform phase incidence.