Hello friends,

I have a question regarding to the relationship between step response and group delay.

I have designed a FIR filter with fdatool with following characteristics.

Taps = 64
Fs = 10000
Fpass = 100
Fstop = 200

In step response screen it shows me 6.4ms delay before I get the actual value. However the group delay shows 32 samples... when we multiply 32 samples with the sampling period (which is 100us) then we get 3.2ms delay... Where does this additional 3.2ms delay come from?

Thanks in Advance. Start a New Thread