Room acoustics simulation using 3-D compact explicit FDTD schemes

Konrad Kowalczyk, Maarten Van Walstijn

Research output: Contribution to journalArticle

103 Citations (Scopus)
981 Downloads (Pure)

Abstract

This paper presents methods for simulating room acoustics using the finite-difference time-domain (FDTD) technique, focusing on boundary and medium modeling. A family of nonstaggered 3-D compact explicit FDTD schemes is analyzed in terms of stability, accuracy, and computational efficiency, and the most accurate and isotropic schemes based on a rectilinear grid are identified. A frequency-dependent boundary model that is consistent with locally reacting surface theory is also presented, in which the wall impedance is represented with a digital filter. For boundaries, accuracy in numerical reflection is analyzed and a stability proof is provided. The results indicate that the proposed 3-D interpolated wideband and isotropic schemes outperform directly related techniques based on Yee's staggered grid and standard digital waveguide mesh, and that the boundary formulations generally have properties that are similar to that of the basic scheme used.
Original languageEnglish
Article number5440917
Pages (from-to)34-46
Number of pages13
JournalIEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING
Volume19
Issue number1
DOIs
Publication statusPublished - Jan 2011

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

Fingerprint Dive into the research topics of 'Room acoustics simulation using 3-D compact explicit FDTD schemes'. Together they form a unique fingerprint.

  • Cite this