Low-frequency room demerit analysis and equalization using properly-modeled source terms in finite-difference time-domain simulations

Authors

  • Ryan J. Matheson Dept. of Physics and Astronomy, University of Waterloo, 200 University Ave. West., ON N2L 3GI, Canada

Keywords:

Finite difference time domain method, Resonance, End-wall, Finite difference time domain simulations, Finite-difference time-domain simulation, Frequency modes, Low frequency, Low-frequency resonance, Source terms

Abstract

A study was conducted to perform low-frequency room demerit analysis and equalization using properly modeled source terms in finite-difference time-domain (FDTD) simulations. It was observed that the end-wall adjustment helped in equalizing things, as exciting the lowest modes corresponding to the W dimension was avoided. This had no effect on the lowest frequency modes that were attributed to the L dimension, which caused the largest low frequency resonances. The L-dimension modes were considered by the rear cancellation method and it was observed that all the modes below 130Hz were removed when the low frequency resonances created problems.

Published

2009-09-01

How to Cite

1.
Matheson RJ. Low-frequency room demerit analysis and equalization using properly-modeled source terms in finite-difference time-domain simulations. Canadian Acoustics [Internet]. 2009Sep.1 [cited 2021Apr.13];37(3):76-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2141

Issue

Section

Proceedings of the Acoustics Week in Canada