This paper aims at providing a better insight into the 3D approximations of the wave equation using compact finite-difference time-domain (FDTD) schemes in the context of room acoustic simulations. A general family of 3D compact explicit and implicit schemes based on a nonstaggered rectilinear grid is analyzed in terms of stability, numerical error, and accuracy. Various special cases are compared and the most accurate explicit and implicit schemes are identified. Further considerations presented in the paper include the direct relationship with other numerical approaches found in the literature on room acoustic modeling such as the 3D digital waveguide mesh and Yee's staggered grid technique.
|Number of pages||4|
|Publication status||Published - Mar 2010|
|Event||EEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2010) - Dallas, United States|
Duration: 01 Mar 2010 → 01 Mar 2010
|Conference||EEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2010)|
|Period||01/03/2010 → 01/03/2010|