In this experiment, we have done FIR filter design using
Frequency Sampling Method. In this method, impulse response h(n) is obtained
using desired frequency response. The given frequency response is sampled at a
set of equally spaced frequencies to obtain N samples. Sampling the continuous
frequency response Hd(w) at N points essentially gives the N-point DFT of Hd(wk).
A Set of samples determined from Hd(w) are identified as Discrete Fourier
Transform Coefficients. It is denoted by H(k). The filter coefficients are
obtained by IDFT.
The is the simplest and most precise ,easy to perform method.
ReplyDeleteeasy to understand!
ReplyDeleteIf no. of frequency samples are increased then error reduces
ReplyDeleteOAM and OSM techniques are used to design FIR filter
ReplyDeleteThis was helpful! Thankyou
ReplyDeleteThe digital filter is used to filter discrete time signals with
ReplyDeletethe ability to modify the frequency response of the filter at
any time
N is increased to get the desired output spectrum
ReplyDelete