https://scholars.nthu.edu.tw/esploro/outputs/journalArticle/Broadband-spatially-feedforward-active-noise-control/9957772060206774
Broadband spatially feedforward active noise control algorithms using a comb filter - National...
A controller composed of a nonrecursive filter and a recursive filter is used to approximate the ideal controller for a spatially feedforward duct ANC problem....
active noise controlcomb filterbroadbandspatiallyfeedforward
https://www.soundbridge.io/de/get-creative-with-comb-filter
Get Creative With Comb Filter
Comb filters are produced when a signal is time-delayed and added back to itself. Some frequencies will cancel, and others will be reinforced.
get creativecomb filter
https://in.mathworks.com/help/dsp/ref/dsp.cicinterpolator-system-object.html
dsp.CICInterpolator - Interpolate signal using cascaded integrator-comb filter - MATLAB
The dsp.CICInterpolator System object interpolates an input signal using a cascaded integrator-comb (CIC) interpolation filter.
comb filterdspinterpolatesignalusing