Impulse response for FIR filter design

1. What will be the impulse response of FIR filter?
2. What is the impulse response condition for a FIR filter to have linear phase characteristics?
3. What is the frequency response of FIR filter?

What will be the impulse response of FIR filter?

Finite impulse response models are based on finite impulse response (FIR) filters, which are a type of a signal processing filter whose impulse response is of finite duration because it settles to zero in finite time.

What is the impulse response condition for a FIR filter to have linear phase characteristics?

For a FIR system to have a linear phase the condition for impulse response is h(n)=±h(M−1−n)⋅ If h(n)=h(M−1−n) then the FIR is symmetrical around and if h(n)=−h(M−1−n) then the FIR is anti symmetrical around the centre coefficient.

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.