From the Contents: Sound as a Wave -- The Case of a Stretched String -- Aerial Waves in Tubes and Closed Rooms -- Relations Between Pressure, Density and Velocity Fluctuations -- Periodic Phenomena -- Probability, Correlations and Spectra -- Monopole, Dipole and Quadrupole Models -- Fluctuating Monopole.- Lighthill's Theory of Aerodynamic Noise -- Lighthill's Equation of Sound -- Subsonic Jet Without Considering Convection -- Dimensional Analysis by Lighthill -- Subsonic Jet Noise (Including Effect of Convection) -- Doppler Effect -- Experimental Determination of the Convection Velocity -- Computational Aeroacoustics -- Numerical Non-dissipative Schemes -- Numerical Solution of Acoustiv Propagation of Turbulence -- Further Topics in Aerodynamic Noise -- Supersonic Jet Noise -- Sound at Solid Boundaries -- Combustion Noise -- Sonic Boom -- Measurement Techniques.