Transmission of Sound in Nonuniform Ducts
The transmission of sound in a nonuniform two dimensional duct without flow is investigated by a method of weighted residuals which leads to a set of coupled ″generalized telegraphists' equations″ . Results for several duct configurations are compared with a variational method, a stepped duct approximation, and an eigenfunction expansion method based on linearly tapered duct segments.
W. Eversman et al., "Transmission of Sound in Nonuniform Ducts,", Jan 1974.
Mechanical and Aerospace Engineering
Article - Journal