The skewness of the first time derivative of a pressure waveform, or derivative skewness,
has been used previously to describe the presence of shock-like content in jet and rocket
noise. Despite its use, a quantitative understanding of derivative skewness values has been
lacking. In this paper, the derivative skewness for nonlinearly propagating waves is
investigated using analytical, numerical, and experimental methods. Analytical expressions
for the derivative skewness of an initially sinusoidal plane wave are developed and, along …