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Technical discussion about Matlab and issues related to Digital Signal Processing.

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Nonlinear fir filter design - Appalayagari Sreedhar - Oct 25 13:36:00 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.

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Re: Nonlinear fir filter design - Jeff Brower - Oct 25 16:08:00 2002

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.