Fwd: Problem using the hanning function in embedded mode

[Nicanor García]

---------- Forwarded message ----------
From: Nicanor García <address@hidden>
Date: 2012/12/23
Subject: Re: Problem using the hanning function in embedded mode
To: Sergei Steshenko <address@hidden>

Hello Sergei,

I have tested the program and I'm sure the audio signal is getting correctly from the GUI into Octave as a vector of doubles, the problem occurs as soon as I call hanning() which returns zeros.

2012/12/23 Sergei Steshenko <address@hidden>

>________________________________
> From: Nicanor García <address@hidden>
>To: address@hidden
>Sent: Sunday, December 23, 2012 6:46 PM
>Subject: Problem using the hanning function in embedded mode

>
>
>Hello, I'm currently developing a standalone audio signal processing application and I'm using octave for the processing part. I'm working in Ubuntu Linux (though I'll be moving soon to Linux Mint), and using QtCreator.
>
>
>My process involves taking the FFT of the series of windows of a signal, and for that I'm also using the hanning function to get a hanning window.
>
>The code works perfectly when run from octave in console, but when I try to use it in the application I detected that the hanning function returns only zeros. The same happens with the hamming function.
>
>This only happens when I use the embedded mode in the program.  And is the only problem involving Octave I have detected.
>
>I searched throughly in all the resources provided by Octave and across the web and found nothing about this issue, so I'm asking here for your help.
>
>Thank you very much.
>

>_______________________________________________
>Help-octave mailing list
>address@hidden
>https://mailman.cae.wisc.edu/listinfo/help-octave
>
>
>

AFAIR, Octave is not thread-safe.

Without knowing how your GUI and Octave exchange data it is impossible to diagnose what's going wrong.

Regards,
  Sergei.

2012/12/23 Nicanor García <address@hidden>

Hello Sergei,

I have tested the program and I'm sure the audio signal is getting correctly from the GUI into Octave as a vector of doubles, the problem occurs as soon as I call hanning() which returns zeros.

2012/12/23 Sergei Steshenko <address@hidden>

>________________________________
> From: Nicanor García <address@hidden>
>To: address@hidden
>Sent: Sunday, December 23, 2012 6:46 PM
>Subject: Problem using the hanning function in embedded mode

>
>
>Hello, I'm currently developing a standalone audio signal processing application and I'm using octave for the processing part. I'm working in Ubuntu Linux (though I'll be moving soon to Linux Mint), and using QtCreator.
>
>
>My process involves taking the FFT of the series of windows of a signal, and for that I'm also using the hanning function to get a hanning window.
>
>The code works perfectly when run from octave in console, but when I try to use it in the application I detected that the hanning function returns only zeros. The same happens with the hamming function.
>
>This only happens when I use the embedded mode in the program.  And is the only problem involving Octave I have detected.
>
>I searched throughly in all the resources provided by Octave and across the web and found nothing about this issue, so I'm asking here for your help.
>
>Thank you very much.
>

>_______________________________________________
>Help-octave mailing list
>address@hidden
>https://mailman.cae.wisc.edu/listinfo/help-octave
>
>
>

AFAIR, Octave is not thread-safe.

Without knowing how your GUI and Octave exchange data it is impossible to diagnose what's going wrong.

Regards,
  Sergei.