The highly successful first edition of this book (1987) is cited in many research and development papers as the only book in the world focusing singularly on this important subject. over the years, the subject of analysis and design of mufflers has seen great advances in depth as well as breadth. this second edition seeks to offer the latest advances as well the fundamentals, and is a result of the authors four-decade experience in graduate teaching, research, development and extensive industrial consultancy.? this much-awaited book covers generation, propagation and suppression of the exhaust and intake noise of the internal combustion engines used in automobiles and captive generator sets, and the fan or the air-handling unit noise of heating, ventilation and air-conditioning systems.?a special feature of this second edition is its coverage of three-dimensional analysis as well as the plane-wave theory.