Exploring the Vectored Time Variant Comb Filter

Vesa Norilo
DAFx-2014 - Erlangen
This paper presents the time variant vectored comb filter. It is an extension of the feedback delay network to time variant and nonlinear domains. Effects such as chorus and flanger, tap delay and pitch shifter are examined in the context of the feedback scheme. Efficient implementation of a stateless vectorizable LFO for modulation purposes is presented, along with a recursive formulation of the Hadamard matrix multiplication. The time variant comb filter is examined in various effect settings, and presented with source code and sound examples.