We have two FIR Filters, running on same input data, generated for different
1. FIR1 - N Taps (as generated in Matlab)
2. FIR2 - N+10 Taps (as generated in Matlab)
Have 2 separate Input Data Arrays of length matching to the taps.
Array 1 of length N for FIR1.
Array 2 of length N+10 for FIR2.
Feed the incoming input sample to both the arrays.
Have a single Input Data Array of length N+10.
Array of length N+10 for both FIR1 & FIR2.
Feed the incoming input sample to the array.
Add 5 zeroes on each side of the filter coefficients for FIR1 to make it length
/ taps as N+10.
FIR1 = [0, 0, 0, 0, 0, N Original Generated Coefficients, 0, 0, 0, 0, 0]
FIR2 = [N+10 Original Generated Coefficients]
"Case 1" brings in complexity in our design and hence we were looking into
"Case 2" and have certain queries:
1. Will adding zeroes degrade the performance of the filter i.e. roll-off/
attenuation etc. ?
2. Will the group delay of the Filter(original generated with added zeroes)
differ from the Filter(original generated coefficients) ?