Schroeder's diffusers proved to be very successful, and alternate
designs as well as its original design have been applied to concert
halls to evenly distribute the sound energy to the audience area
[Cox and D'AntonioCox and
D'Antonio2003]. In this paper, we have implemented a 2-D
digital waveguide mesh with Schroeder's diffuser based on quadratic
residue sequences, and have simulated its performance. We have shown
that the diffusion occurs at the boundary in a mesh where Schroeder's
diffuser is implemented, the sound energy is evenly dispersed
everywhere after a while. On the other hand, a plain mesh shows more
specular reflections, and the sound energy is more concentrated in
some regions in a specific pattern. The computational efficiency of
the 2-D digital waveguide mesh is largely preserved, since
computations along the boundary of an mesh are
, while the time-update for the entire mesh is
. This highly diffusing 2-D digital waveguide mesh
may be extended to implement artificial reverberation, or to model a
musical instrument's body.