Analog Based (IIR) Noise Reduction Filters

[Craig Maier]

Attached, you can find 5 Analog based (IIR*) Noise Reduction Filters for use in the Multifilter. These filters use analog techniques and, thus have less continuous noise rejection capability compared to its FFT counterpart. However, it also produces less artifacting. They are not useful for rejecting impulse noise. They will be found to be useful for rejecting wideband noise like hiss. So, you may find it to be an interesting alternative to the CNF in some specific instances. This system is based on the "Punch and Crunch Effect" with filter number 5 consisting of 8 total bands.

*Note: IIR is an acronym for Infinite Impulse Response