bugGNU Octave - Bugs: bug #38134, signal package: bug in remez


bug #38134: signal package: bug in remez

Submitted by:  CarnĂ« Draug <carandraug>
Submitted on:  Mon 21 Jan 2013 03:22:30 PM UTC  
Category: Octave Forge PackageSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: ConfirmedAssigned to: None
Originator Name: Open/Closed: Open
Release: devOperating System: Any

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Fri 21 Jun 2013 03:37:59 AM UTC, comment #1:

Confirmed that the remez() function does give poor results for the given example, although I don't see exactly the same coefficients as reported.

Mike Miller <mtmiller>
Project Member
Mon 21 Jan 2013 03:22:30 PM UTC, original submission:

The following was reported on the mailing list on 15/01/2012 by Anders Brandt. nabble thread.

I am experiencing problems with the remez command in Octave 3.2.4 on Windows. I have tried a number of different orders and griddensities, but all seem to give error. I am trying to define a differentiator.


MATLAB's firpm, which I understand should give the same (similar) output, gives

The MATLAB result is a really decent differentiator, which cannot be said about the remez output.

Robert T. Short commented:

I don't think this function works. I have not tried it in a long time, but I never got any useful results. I played around with it enough to believe it would not be hard to fix, but it has never bubbled up the priority stack enough to actually do it.


Carnë Draug <carandraug>
Project Member


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  • -unavailable- added by mtmiller (Posted a comment)
  • -unavailable- added by carandraug (Submitted the item)
  • -unavailable- added by carandraug (original bug reporter)

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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 21 Jun 2013 03:37:59 AM UTCmtmillerStatusNone=>Confirmed
      Operating SystemMicrosoft Windows=>Any
    Mon 21 Jan 2013 03:22:30 PM UTCcarandraugCarbon-Copy-=>Added -unavailable-

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