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2 stage interpolated fir filter with pass band gain of 6.02 db

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ramkumara

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Hi all,

I am designing a interpolated fir filter. I have designed FIR filter using the coefficients that I got from matlab.

But how to design a 2 stage interpolated fir filter with pass-band gain of 6.02 db.

I read many IFIR filters which uses linear interpolation/b spline interpolation. But I did not get any idea abt getting passband gain of 6.02 db. please help..
 

maybe, double your coeff values?
 

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