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Digital Waveguides:
- System is distributed (vocal tract, bore, string, plate)
- Signals are traveling waves
digitized via sampling
- Aliasing occurs for frequencies greater than
- Frequency axis is preserved up to
- Relative tuning is preserved.
- Damping is preserved
- Stability preserved
Wave Digital:
- System is lumped (masses, springs, dashpots)
- Signals are traveling waves digitized by the
bilinear transform
- No aliasing -- entire frequency axis is mapped
- Frequency axis is nonuniformly warped
- One resonance frequency can be preserved.
- Damping decreases with frequency
- Stability preserved
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Download SMAC03S.pdf
Download SMAC03S_2up.pdf