2-D Digital Waveguide Mesh Topologies in Room Acoustics Modelling

TY - CONF

T1 - 2-D Digital Waveguide Mesh Topologies in Room Acoustics Modelling

AU - Murphy, Damian T.

AU - Howard, David M.

N1 - Funding Information: The authors are grateful to Mr. Gui Campos of the University of York for many helpful discussions, Dr. Lauri Savioja of Helsinki University of Technology for advice over Email and Angelo Farina, Associated Professor of Technical Physics at the University of Parma for the use of the Acoustical Parameters Module of his Aurora software. Publisher Copyright: © Proceedings of the International Conference on Digital Audio Effects, DAFx 2000.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - Digital waveguide mesh models have provided an accurate and efficient method of modelling the properties of many resonant structures, including acoustic spaces. 2-D rectilinear and triangular mesh structures have been used extensively in the past to model plates and membranes and are presented here as potential analogues to 2-D acoustic spaces. Impulse response measurements are taken and comparisons are made regarding the spectral content and the associated properties when compared with standard room acoustic parameters. Enhanced mesh structures are examined using frequency warping techniques and high-resolution sampling rates. The 2-D triangular mesh is shown to be considerably superior to the rectilinear mesh in terms of the measurements taken, with a further significant improvement being made by using the same mesh oversampled to a much higher resolution to improve the bandwidth of the measured impulse responses.

AB - Digital waveguide mesh models have provided an accurate and efficient method of modelling the properties of many resonant structures, including acoustic spaces. 2-D rectilinear and triangular mesh structures have been used extensively in the past to model plates and membranes and are presented here as potential analogues to 2-D acoustic spaces. Impulse response measurements are taken and comparisons are made regarding the spectral content and the associated properties when compared with standard room acoustic parameters. Enhanced mesh structures are examined using frequency warping techniques and high-resolution sampling rates. The 2-D triangular mesh is shown to be considerably superior to the rectilinear mesh in terms of the measurements taken, with a further significant improvement being made by using the same mesh oversampled to a much higher resolution to improve the bandwidth of the measured impulse responses.

UR - http://www.scopus.com/inward/record.url?scp=85138742774&partnerID=8YFLogxK

M3 - Paper

SP - 211

EP - 216

T2 - 2000 COST G-6 Conference on Digital Audio Effects, DAFx 2000

Y2 - 7 December 2000 through 9 December 2000

ER -