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Topic: from bode diagram
Replies: 2   Last Post: Mar 7, 2012 6:27 PM

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Posts: 112
Registered: 2/5/09
Re: from bode diagram
Posted: Mar 7, 2012 6:27 PM
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"Nasser M. Abbasi" <> wrote in message <jj1aqj$9ot$>...
> On 3/4/2012 3:45 PM, khadidja wrote:
> > i have a frequency digital reponse of a lowpass filter, to plot it i
> >use freqz matlab function,but i would plot it in frequency domain to see
> >that only low frequencies are allowed,how do this please?

> it will help others help you more by showing what you have
> tried, the code itself, so one can use it to help you
> finish the part you are stuck at.
> --Nasser

first i thank you
this is my script:
>>denominator=[0.6 -0.34 0.12];
>> numerator=[0.77 -0.45 0.234];
>> freqz(denominator,numerator)

it gives z-transform magnitude in db
but i need to plot the requency reponse amplitude according to normalized frequencies

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