Electroacoustic transducers (EAT) are devices, which transform electric
energy to energy of acoustic fluctuations. Principles of action, design
of transducers for work in air and water as well as for non-destructive
control are described in the book. New technologies of designing EAT,
not only expanding designing possibilities, are described. They also
allow to create transducers with improved characteristics. In
particular, methods to increase target capacity (sound pressure),
decrease working (resonant) frequency of transducers and expand
frequencies of projectors and sound receivers are developed. Methods and
control units of transducers in batch production of transducers are
described, too.