Frequency Response of digital finite impulse response (FIR) filter is essential to understand the characteristics. In this video, general description of discrete time fourier transform (DTFT) to find the frequency response of LTI systems with Magnitude and phase response are given along with detailed example of FIR filter. Using impulse response, Magnitude response in the shape of sinc is explained along with its zero crossings and phase response with explanation of zero crossings.

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