Howtosignalprocessing
What does a CIC filter do?
Cascaded integrator-comb (CIC) filters are multirate filters used for realizing large sample rate changes in digital systems. Both decimation and interpolation structures are supported. CIC filters contain no multipliers; they consist only of adders, subtractors, and registers.
What is the disadvantage of downsampling?
Down sampling or Decimation is a method to decrease the sampling frequency. Aliasing might be one of the problems that will creep in if the new sampling rate is less than the Nyquist rate. Effects of aliasing are distortion of the signal upon reconstruction.
What is a decimation filter?
Decimation filters help you remove the excess bandwidth and reduce the sampling frequency of the signal. Decimation filters also help you reduce the computational resources required for processing and storing the signal.
