Acoustic hybrid junction in a rectangular waveguide

Acoustic scattering from a hybrid junction in a rectangular waveguide is st udied. The Fourier transform and mode matching is used to represent the sca ttered wave and the simultaneous equations for the modal coefficients are f ormulated. A residue calculus is utilized to obtain a solution to the simul taneous equations in fast-converging series. Numerical computations are per formed to show the behavior of transmission in terms of junction geometry a nd operating frequency. The utility of acoustic hybrid junction is discusse d in terms of its decoupling characteristics. (C) 2000 Acoustical Society o f America. [S0001-4966(00)05803-3].