Howtosignalprocessing
- What is arbitrary frequency response?
- What is the phase of FIR filter?
- What is the frequency response of FIR filter?
What is arbitrary frequency response?
The term "arbitrary" in this context refers to the desired frequency response, and what it means is that the respective design method accepts any desired response.
What is the phase of FIR filter?
FIR filters are usually designed to be linear-phase (but they don't have to be.) A FIR filter is linear-phase if (and only if) its coefficients are symmetrical around the center coefficient, that is, the first coefficient is the same as the last; the second is the same as the next-to-last, etc.
What is the frequency response of FIR filter?
Since all signals can be decomposed into sinusoidal components, the frequency response function characterizes frequency regions called stop bands and pass bands, where the FIR filter will reject signal components or pass them nearly undistorted.
