Modeling Frequency-Dependent Boundaries as Digital Impedance Filters in FDTD and K-DWM Room Acoustics Simulations

Kowalczyk K, Walstijn MV. Modeling Frequency-Dependent Boundaries as Digital Impedance Filters in FDTD and K-DWM Room Acoustics Simulations. J Audio Eng Soc. 2008;56(7/8):569-583. Available from: https://aes.org/publications/elibrary-page/?id=14401

@article{Kowalczyk2008_14401,
  author = {Kowalczyk, Konrad and Walstijn, Maarten van},
  title = {{Modeling Frequency-Dependent Boundaries as Digital Impedance Filters in FDTD and K-DWM Room Acoustics Simulations}},
  journal = {Journal of the Audio Engineering Society},
  volume = {56},
  number = {7/8},
  pages = {569--583},
  year = {2008},
  month = jul,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14401}
}

TY  - JOUR
TI  - Modeling Frequency-Dependent Boundaries as Digital Impedance Filters in FDTD and K-DWM Room Acoustics Simulations
AU  - Kowalczyk, Konrad
AU  - Walstijn, Maarten van
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 56
IS  - 7/8
SP  - 569
EP  - 583
PY  - 2008
DA  - 2008/07/06
UR  - https://aes.org/publications/elibrary-page/?id=14401
PB  - Audio Engineering Society
LA  - en
AB  - A novel method for modeling frequency-dependent boundaries in finite-difference time-domain (FDTD) room acoustic simulations offers a significant improvement over the conventional one-dimensional approach. The method incorporates a digital impedance filter resulting in multidimensional formulation. Reflecting sound waves approximate the theoretical reflectance for any value of wall impedance and angle of incidence, especially at low frequencies. Both phase and amplitude are preserved. Results obtained from numerical experiments confirm the validity of the approach.
ER  -