Cascaded integrator–comb filter

Digital signal sample rate converter

In digital signal processing, a cascaded integrator–comb (CIC) is a computationally efficient class of low-pass finite impulse response (FIR) filter that chains N number of integrator and comb filter pairs to form a decimator or interpolator. In a decimating CIC, the input signal is first fed through N integrator stages, followed by a down-sampler, and then N comb stages. An interpolating CIC has the reverse order of this architecture, but with the down-sampler replaced with a zero-stuffer (up-sampler).

This keyword could refer to multiple things. Here are some suggestions: