I used FIR filter for my system, and I imported the coefficients form Matlab using FDA tool.

In matlab (FDA tool), I set the stop band to - 80 dB and the pass band to 0 dB, as indicated in the first attached picture.

But when I opened the coefficients file in Vivado by FIR IP block and checking the frequency response of the filter, the situation was different, as shown in the second attached picture. In fact, the stop band is 50 dB ! and pass band is 125 dB ! I think these are wrong values. How to modify these values in order to be the same as of FDA matlab tool ?

Hi,

I used FIR filter for my system, and I imported the coefficients form Matlab using FDA tool.

In matlab (FDA tool), I set the stop band to - 80 dB and the pass band to 0 dB, as indicated in the first attached picture.

But when I opened the coefficients file in Vivado by FIR IP block and checking the frequency response of the filter, the situation was different, as shown in the second attached picture. In fact, the stop band is 50 dB ! and pass band is 125 dB ! I think these are wrong values. How to modify these values in order to be the same as of FDA matlab tool ?

Thanks.

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