Mechanic and Acoustic Oscillations.- Electromechanic and Electroacoustic Analogies.- Electromechanic and Electroacoustic Transduction.- Magnetic-Field Transducers.- Electric-Field Transducers.- The Wave Equation in Fluids.- Horns and Stepped Ducts.- Spherical Sound Sources and Line Arrays.- Piston Membranes, Diffraction and Scattering.- Dissipation, Reflection, Refraction, and Absorption.- Geometric Acoustics and Diffuse Sound Fields.- Isolation of Air- and Structure-Borne Sound.- Noise Control - A Survey.- Appendices.