Investigations on Electroacoustic Transducers

This work attempts to decorate the exploding field of "Electroacoustic Transducers", focusing the conceptualization, design, development, modeling, simulation, and manufacturing of transducers like microphone, woofer, and miniature-loudspeaker. Also, a loudspeaker in 4C products like earbud and insert earphone is targeted. Modeling, simulation, fabrication, and testing are 4 main pillars of this work. Dynamic Analogy using equivalent circuit is used to develop analytical model aided by micro-tensile test and finite element simulation. Laser vibrometry and an anechoic chamber measurement are aided with parametric simulations to expedite design and development. A handful discussion is aimed for an electret condenser microphone. Performance of 10" woofer is visualized by reverse engineering. Four miniature-loudspeakers are simulated and designed. Diaphragm and magnetic motor modifications are tried to reduce total harmonic distortion of circular and elliptical miniature-loudspeakers. An earbud and insert earphones are also designed, simulated, and tested. Anyone involved in electroacoustic transducer study, research, development, and manufacturing can get benefited by using this work.