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Dispersive Traveling Waves

In addition to frequency-dependent attenuation, LTI filters can provide a frequency-dependent delay. This can be used to simulate dispersive wave propagation. When there is dispersion but no attenuation, the filter takes the form of an allpass filter [455]. In musical acoustics, the piano string is significantly dispersive (§5.2,§G.6).

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``Physical Audio Signal Processing'', by Julius O. Smith III, (August 2007 Edition).
Copyright © 2008-05-16 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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