[Octave-bug-tracker] [bug #41958] octave-forge-signal fir1 function incorrect results

[Wilson Guerrero Coltters]

URL:
  <http://savannah.gnu.org/bugs/?41958>

                 Summary: octave-forge-signal fir1 function incorrect results
                 Project: GNU Octave
            Submitted by: wcoltters
            Submitted on: Tue 25 Mar 2014 05:26:12 PM GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Wilson Guerrero Coltters
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: GNU/Linux

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Details:

>From page

http://www.sharetechnote.com/html/Octave_Matlab_SignalProcessing.html

If you execute the examples, e.g.:


b = fir1(48,[0.45 0.55],'stop');
stem(b);
figure;
freqz(b,1,512);


you will get incorrect results compared with the results shown on the page and
also compared with results with Matlab.

Only the function with 'low' delivers correct results.

OpenSUSE 12.3
octave 3.8.1-70.1
octave-forge-signal 1.3.0-63.3


        






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