The 2019 KU Leuven Course on Applied & Numerical Acoustics will take place in September 2019 in Leuven, Belgium. It is the 30th in a series of courses on experimental and numerical techniques in applied acoustics, organised by the Department of Mechanical Engineering of the KU Leuven. This edition of the KU Leuven Applied Acoustics Course is set up as an extended overview of some recent techniques in applied acoustics with emphasis on applications in automotive and aerospace industry. This overview covers techniques ranging from active noise control to the use of boundary and finite element methods in acoustic problems and is intended to update the expertise of practising engineers and researchers. The overview is application oriented with emphasis on background principles and on practical use of the methods. The course will be illustrated with case studies and real life demonstrations of several experimental and numerical techniques.