bugGNU Octave - Bugs: bug #36782, Documentation for filter incorrect

 
 

bug #36782: Documentation for filter incorrect

Submitter:  D M <colhawk>
Submitted:  Wed 04 Jul 2012 03:39:22 PM UTC
   
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Documentation
Status:  Invalid / Not an Octave Bug Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * 3.4.0 Operating System:  * Mac OS
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Fri 06 Jul 2012 12:18:04 AM UTC, comment #2: 

The documentation appears correct to me as well.  See the Matlab documentation (http://www.mathworks.com/help/techdoc/ref/filter.html) which also uses the same terminology.  'b' are numerator coefficients (FIR filter) and 'a' are denominator (IIR filter).

Rik <rik5>
Group administrator
Wed 04 Jul 2012 03:53:40 PM UTC, comment #1: 

Are you sure? They look OK to me. b is the numerator coefficients and a is the coefficients of the denominator.

Doug Stewart <dastew>
Wed 04 Jul 2012 03:39:22 PM UTC, original submission:  


help filter  contains errors :   a,b are switched and c,d are switched

D M <colhawk>

 

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2012-07-06 rik5 Item GroupNone Documentation
        StatusNone Invalid / Not an Octave Bug
        Open/ClosedOpen Closed
        Summaryhelp documentation Documentation for filter incorrect

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