Comb filters can be changed slowly over time to produce the following digital audio ``effects'', among others:delay lines typically require interpolation, these applications will be discussed after Chapter 5 which covers variable delay lines. For now, we will pursue what can be accomplished using fixed (time-invariant) delay lines. Perhaps the most important application is artificial reverberation, addressed in Chapter 3.
FDN and State Space Descriptions
Equivalence of Series Combs to TDLs