can any one explain me the operation of FIR Filter for each of the samples ?

[bhalke.santosh]

can any one explain me the operation of FIR Filter for each of the samples given as input?

what I understood is,
"In my FIR Filter I've 127 coefficients. In this filter if I give an input sample stream to FIR Filter, it will take one sample first get Multiply-add with 127 coefficients and come out as output first sample, after that second sample get as input and this also get Multiply-add with 127 coefficients gives output second sample, this way each sample of the sample stream get 127 rounds and gives the filtered output sample stream."

please correct me If I'm wrong.

 

[fouwad]

i guess you are right

 

[axcdd]

FIR filter math:
y[n] = x[n]*b[0] + x[n-1]*b[1]+......x[n-N]*b[N]

where n is current sample, N is filter length,x is input sample b is coefficient

so example:
4 coefficient fir: -1 3 5 -2
input signal values: 3 1 5 7
output should be: -3 8 13 7 44 25 -14