Nonlinear fir filter design

Started by Appalayagari Sreedhar October 25, 2002
Hi

I want to know clearly, what exactly the non linear phase fir filters.

is the minimum phase fir filters are the nonlinear filters.

i need to design a non linear filter,please shed some light on this area.

thank u all,

and also does the antisymmetric impluse response gives us the nonlinear phase
filter?

regds,sree.



Appalayagari Sreedhar-

Minimum phase FIR filters typically exhibit non-linear phase. You can convert
from
symmetric to minimum phase; so one design method is as follows:

-design the standard FIR filter that meets your specs

-convert to minimum phase

-truncate trailing section of impulse response to
some acceptable limit of tolerance for coefficients
near zero

The objective is to reduce processing time, in cases where non-linear phase is
acceptable.

Jeff Brower
DSP sw/hw engineer
Signalogic

> I want to know clearly, what exactly the non linear phase fir filters.
>
> is the minimum phase fir filters are the nonlinear filters.
>
> i need to design a non linear filter,please shed some light on this area.
>
> thank u all,
>
> and also does the antisymmetric impluse response gives us the nonlinear phase
filter?
>
> regds,sree.