NDLI: Reduction of the dispersion error in the interpolated digital waveguide mesh using frequency warping

Content Provider	IEEE Xplore Digital Library
Author	Savioja, L. Valimaki, V.
Copyright Year	1999
Description	Author affiliation: Lab. of Acoust. & Audio Signal Process., Helsinki Univ. of Technol., Espoo, Finland (Savioja, L.)
Abstract	The digital waveguide mesh is an extension of the one-dimensional digital waveguide technique. The mesh is used for simulation of two- and three-dimensional wave propagation in musical instruments and acoustic spaces. The rectangular digital waveguide mesh algorithm suffers from direction-dependent dispersion. By using the interpolated mesh, nearly uniform wave propagation characteristics are obtained in all directions. In this paper we show how the dispersion error of the interpolated mesh can be reduced by frequency warping. By using this technique the bandwidth where the frequency accuracy is within 1% tolerance is more than doubled.
Starting Page	973
Ending Page	976
File Size	431095
Page Count	4
File Format	PDF
ISBN	0780350413
ISSN	15206149
DOI	10.1109/ICASSP.1999.759858
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-03-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Acoustic waveguides Rectangular waveguides Acoustic propagation Acoustic waves Laboratories Acoustic signal processing Multidimensional signal processing World Wide Web Signal processing algorithms
Content Type	Text
Resource Type	Article

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Reduction of the dispersion error in the interpolated digital waveguide mesh using frequency warping