Preface. 1. Introduction. 2. Unbounded homogeneous atmosphere. 3. Homogeneous atmosphere above a ground surface. 4. Atmospheric refraction. 5. Atmospheric turbulence. 6. Irregular terrain. 7. Noise barriers. A. Basic acoustic equations for a homogeneous atmosphere. B. Free field of a point source. C. Acoustic impedance. D. Reflection of sound waves. E. Basic acoustic equations for a layered refracting atmosphere. F. Generalized Fast Field Program (FFP). G. Parabolic Equation (PE) method. H. Green's Function Parabolic Equation (GFPE) method. I. Atmospheric turbulence. J. Atmospheric turbulence in the PE method. K. Analytical model for a non-refracting turbulent atmosphere. L. Ray model including caustic diffraction fields. M. Computational methods for irregular terrain. N. Wind and temperature profiles in the atmosphere. O. Sound propagation over a screen. P. The method of stationary phase. References. List of symbols. Index. Language: English