Re: Octave 4.0.0_signal package_ellipord.m_xubuntu

[Tarmo Tapio]

Thank you Doug.

I tested this ellipord at win10 and octave 4.4.1. It works. However plotting do not work correctly at win10 laptop(Acer). Axis and curves moves different direction and overlap. My ubuntu pc is acer 10" (old). I try to update xubuntu to version 18.04, but how I can find octave 4.4.1 for linux. Newest version I found was 4.2.2.

BR Tarmo

Doug Stewart kirjoitti 1.11.2018 klo 18.02:

On Thu, Nov 1, 2018 at 10:42 AM Tarmo Tapio <address@hidden> wrote:

Ok.

I can not open this kind of file format. Are you using Linux or windows pc? What octave version?

Tarmo

I am on ubuntu 18.04 octave 4.4.1

Try this file

 

Doug Stewart kirjoitti 1.11.2018 klo 14.40:

On Thu, Nov 1, 2018 at 8:08 AM Tarmo Tapio <address@hidden> wrote:

I included it last time, but here is txt-file.

% The following 3 lines produce filter coefficients shown in Table 6.1.
wp = [0.35,0.65]; ws = [0.25,0.75]; Rp = 1; As = 50;
[N, wn] = ellipord(wp, ws, Rp, As);
[b,a] = ellip(N,Rp,As,wn);
w = [0:500]*pi/500; H = freqz(b,a,w); magH = abs(H);
magHdb = 20*log10(magH);

This code works OK for me!

I get the results shown in the attached file

 

.....

Tarmo

Doug Stewart kirjoitti 1.11.2018 klo 12.50:

On Thu, Nov 1, 2018, 12:25 AM Tarmo Tapio <address@hidden wrote:

I have upgraded now to version 4.2.2 (sudo add-apt-repository ppa:octave/stable) but I get same error.

Ok

Can you show me a small section of code  that will make the error?

Doug Stewart kirjoitti 31.10.2018 klo 19.22:

On Wed, Oct 31, 2018 at 1:08 PM Tarmo Tapio <address@hidden> wrote:

Hi

I have problem to use Octave 4.0.0 version's function ellipord.m (signal
package version 1.4.0?). File included. I get error
"validate_filter_bands". My operation system is Linux Xubuntu 16.04.
What is my fault?

Tarmo

Thank you for starting a new thread.

Octave 4.0.0 is very old, and lots of thing have been fixed since then.

I think you should upgrade to the newest octvae.

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DAS

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DAS

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DAS