This section describes the single-channel processors provided by sfFDN. These are audio processors that operate on a single channel of audio. They can be used at the beginning of the input gains block, at the end of the output gains block, or they can be combined in a FilterBank object and used as a multi-channel processor.

Processors

Delay: A simple delay line that supports interpolation for fractional delay lengths.
Schroeder Allpass: An allpass filter consisting of a delay line and a feedback and feedforward path. See also SchroederAllpassSection, which implements a group of Schroeder allpass filters placed in series or in parallel.
FIR: A finite impulse response filter.
Sparse FIR: A sparse finite impulse response filter that allows for non-uniformly spaced coefficients.
IIR: An infinite impulse response filter implemented as a cascade of biquad sections.
One Pole: A simple one-pole filter.
Allpass: A first-order allpass filter.

AudioProcessorChain

The AudioProcessorChain class allows you to chain multiple single-channel processors together. This is useful for creating more complex processing chains without having to create a custom processor class. You can add any of the single-channel processors to the chain, and they will be processed in the order they were added.