bugGNU Octave - Bugs: bug #46440, [octave forge] (signal) missing...


bug #46440: [octave forge] (signal) missing function lp2lp

Submitted by:  Nicholas Jankowski <nrjank>
Submitted on:  Fri 13 Nov 2015 09:34:58 PM UTC  
Category:  Octave Forge Package Severity:  1 - Wish
Priority:  1 - Later Item Group:  Feature Request
Status:  Postponed Assigned to:  None
Originator Name:  Daniel Texidor Dantas Open/Closed:  Open
Release:  dev Operating System:  Any

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Fri 20 Nov 2015 03:32:35 PM UTC, comment #1: 

Attached are two Octave m-files, phi2p.m and Hp2g.m that implement frequency transformations using the algorithm of Figure 6.7.3 of "Digital Signal Processing" R.A. Roberts and C.T. Mullis Addison-Wesley ISBN 0-201-16350-0. The script ellip5_test.m does some examples. I would be happy to try and work this up into a format acceptable for the toolbox.

(file #35505)

Robert Jenssen <morgawr>
Fri 13 Nov 2015 09:34:58 PM UTC, original submission:  

from the help list.  User has requested the function and supplied the following as a starting point (also attached):

function [at,bt] = lp2lp(a,b,wo)
  if (nargin==3)
    [z, p, k] = tf2zp (a, b);
    [z, p, k] = sftrans (z, p, k,wo, false);
    [at, bt] = zp2tf (z, p, k);

*Besides documentation it is necessary to figure out the space state case.*

*Later this year I will do it.*

I'm unfamiliar with the application and intended function, so can't really help here at the moment. User indicated he may have time later to revisit. In the meantime, others familiar with the intent could possible add tests for function and compatibility, etc. --Nick J.

Nicholas Jankowski <nrjank>


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Attach Files:

Attached Files
file #35505:  phi2p.tgz added by morgawr (2KiB - application/x-compressed-tar - Frequency transformations of a prototype transfer function)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by jwe (Updated the item)
  • -email is unavailable- added by morgawr (Updated the item)
  • -email is unavailable- added by nrjank (Submitted the item)
  • -email is unavailable- added by nrjank

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    Follow 16 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-02-26 mtmiller Assigned tomtmiller => None
        Releaseother => dev
    2019-02-22 mtmiller Carbon-CopyRemoved 80942 => -
    2019-02-22 mtmiller Carbon-CopyRemoved -email is unavailable- => -
    2018-07-02 jwe Summary[octave-forge] (signal) missing function lp2lp => [octave forge] (signal) missing function lp2lp
    2018-03-30 mtmiller Priority5 - Normal => 1 - Later
    2018-03-20 mtmiller StatusPatch Submitted => Postponed
    2017-08-11 jwe Summarysignal package: missing function lp2lp => [octave-forge] (signal) missing function lp2lp
    2015-12-22 mtmiller Severity3 - Normal => 1 - Wish
        StatusNone => Patch Submitted
        Assigned toNone => mtmiller
        Release4.0.0 => other
        SummaryMissing function from Signal package: lp2lp => signal package: missing function lp2lp
    2015-11-20 morgawr Attached File- => Added phi2p.tgz, #35505
    2015-11-13 nrjank Carbon-Copy- => Added mtmiller@octave.org
    2015-11-13 nrjank Carbon-Copy- => Added daniel.texidor@gmail.com

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