ABSTRACT

In this chapter, we will study the electroacoustic properties of microphones in their linear operating range. Electroacoustic and electromechanical analogies will be used to illustrate the working principles of various microphone transduction techniques. These microphones are reciprocal transducers and the analysis here will be used to advantage in our studies of loudspeakers. A classic review of microphone types is found in Ref. [1] and a more modern one in Ref. [2]. Some specialized microphones are based on heat or ultrasonic sensing techniques, thus not using sound eld sensing by electroacoustic means and will not be considered. Refs. [3,4] discuss many different types of microphones and their electroacoustic analogies.