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[Octave-bug-tracker] [bug #44008] freqz nuance
From: |
Mike Miller |
Subject: |
[Octave-bug-tracker] [bug #44008] freqz nuance |
Date: |
Thu, 15 Jan 2015 02:12:17 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36 |
Update of bug #44008 (project octave):
Item Group: Other => Incorrect Result
Status: None => Need Info
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Follow-up Comment #1:
Thanks for your bug report. I believe you are simply passing the wrong input
to the freqz function. Please note that the object returned by the control
package system functions is a cell array of vectors. To get the numerator and
denominator as ordinary row vectors, use Hz.num{1} and Hz.den{1}.
And I don't know what you saw to suggest zero-padding the numerator, or what
bug report you referred to in the attached file (can you provide a link?). But
try updating your script to use the following call to freqz instead:
[fr, w] = freqz (Hz.num{1}*k, Hz.den{1}, 20);
Does this produce what you expect? Do you expect to be able to get this result
in a different way that is not working?
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