Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP
![Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP](https://wirelesspi.com/wp-content/uploads/2022/11/figure-cic-composite-filter-spectrum-wideband.png)
In olden days, people used to have lots of kids. A famous Urdu satirist once wrote: "It has been observed that the last kid is usually the most mischievous of them all. Therefore, there should be no last kid in a family!" I remembered this line today because I have observed that starting a write-up is the most difficult task of them all. Therefore, there is no introductory paragraph in this article. Suffice it to say that this is the only topic I have found that takes you from a very small first step (just two additions) to really advanced concepts (filter design, cascades and register growth) in the field of DSP, and hence the staircase in the title. A
![](https://www.researchgate.net/profile/Richard-Lyons-2/publication/228648728/figure/fig5/AS:393670122590209@1470869679137/3rd-order-CIC-decimation-filter-structure-and-magnitude-response-before-decimation-when_Q320.jpg)
PDF) Understanding cascaded integrator-comb filters
![](https://www.embedded.com/wp-content/uploads/media-1042120-0504feat1fig12-lg.gif)
Understanding cascaded integrator-comb filters
![](https://wirelesspi.com/wp-content/uploads/2022/11/figure-cic-students-2.png)
Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP
![](https://westcoastdsp.files.wordpress.com/2015/09/compensated_cic.jpg?w=542&h=412)
Cascaded Integrator-Comb Filters – West Coast DSP
![](https://d3i71xaburhd42.cloudfront.net/ae80807f81bbc2533db5c559a1a28e2e0dbb9758/1-Figure1-1.png)
Software Defined Radio Cic Filter - Colaboratory
![](https://wirelesspi.com/wp-content/uploads/2022/11/figure-cic-moving-average-spectrum.png)
Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP
![](https://wirelesspi.com/wp-content/uploads/2022/11/figure-cic-interpolation-filter.png)
Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP
![](https://d3i71xaburhd42.cloudfront.net/8001fada6b7334af6d2610934e82825e0ee25826/1-Figure1-1.png)
PDF] Understanding cascaded integrator- comb filters
![](https://wirelesspi.com/wp-content/uploads/2020/12/figure-psk-phase-offset.png)
Cascaded Integrator Comb (CIC) Filters - A Staircase of DSP