notch filter is as like as bandstop filter but very sharp on cutoff freq, like
when you want to damp 50Hz or 60Hz noise from signal.
ya Ali

Abdul Wahab wrote:
Sorry I cant undestand urs Question

I m also student of electrical engineering but i donot read any notch filter
till now

Thnks

Abdul wahab

On 2/16/08, emilly wrote: you can use MatLab
functions like butter(butter worth), cheby1 ,cheby2 (Chebyshev Type I & II),
etc
for exp for a bandstop filter like 50Hz notch:

can anyone tell me if any inbuilt command is available for designing a notch
filter in matlab.how can i specify the frequency which should be attenated and
the bandwidth of notch????

also, i need to design a FIR FILTER using window method. Can i use FDATOOL for
designing it...If so..where should i mention the Number of taps and window size
in FDA designing window???

Awaiting ur reply...

Thanks and Regards,
Mahadevi

Eiman Emad Mostofi

--
Abdul Wahab
Eiman Emad Mostofi

Reply by emilly●February 16, 20082008-02-16

you can use MatLab functions like butter(butter worth), cheby1 ,cheby2
(Chebyshev Type I & II), etc
for exp for a bandstop filter like 50Hz notch:

Hi friends,
I need to design a notch filter using matlab..

can anyone tell me if any inbuilt command is available for designing a notch
filter in matlab.how can i specify the frequency which should be attenated and
the bandwidth of notch????

also, i need to design a FIR FILTER using window method. Can i use FDATOOL for
designing it...If so..where should i mention the Number of taps and window size
in FDA designing window???
Awaiting ur reply...
Thanks and Regards,
Mahadevi

Eiman Emad Mostofi

Reply by maha devi●February 12, 20082008-02-12

Hi friends,
I need to design a notch filter using matlab..

can anyone tell me if any inbuilt command is available for designing a notch
filter in matlab.how can i specify the frequency which should be attenated
and the bandwidth of notch????

also, i need to design a FIR FILTER using window method. Can i use FDATOOL
for designing it...If so..where should i mention the Number of taps and
window size in FDA designing window???
Awaiting ur reply...
Thanks and Regards,
Mahadevi