Free Signal Analysis Tool

GNU Radio
1

Does anyone know of a free software tool or package that allows one to
do
signal analysis. Im looking for something that I can handle at least a
million samples gracefully and have tools like a spectrogram (with
configurable params like fft size, window, padding, etc) and a waveform
viewer. I have worked with companies in the past who have such tools
but
they are home grown (these tools are often written in matlab with a gui
tacked on the front).

Any help would be appreciated. If such a tool does not exist. I am
interested in possibly created an open source one which runs atop
matlab.

Thanks!
Isaac

2

You might get something useful out of ipython, scipy, and matplotlib.

Frank

On Thu, Aug 5, 2010 at 9:12 PM, Isaac G. [email protected]
wrote:

Thanks!
Isaac

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3

Isac,

Ccheck out Octave - it’s an opens-source replacement for Matlab. It’s
far behind Matlab in usability, but still may suffice you.

On Fri, Aug 6, 2010 at 05:12, Isaac G. [email protected] wrote:

Isaac

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Regards,
Alexander C…

4

On 06.08.2010 07:02, Alexander C. wrote:

Ccheck out Octave - it’s an opens-source replacement for Matlab. It’s
far behind Matlab in usability, but still may suffice you.
It’s not far behind. The core functions are really Ok. You get lots of
toolboxes in octave-forge
for free. Many functions that do not belong to the standard Matlab
version (extra $1000 only for statistics).
The GUI of Matlab is not very useful, since the way of using Matlab ist
mostly
command-line oriented. Of course, Octave lacks the possibility of
creating
own GUI applications. But these are not very well implemented in Matlab
anyway
(many bugs, no multithread, always blocking, strange communication
between GUI functions/blocks).
Simulink is missing in Octave, but this is also not included in
standard MATLAB
(have to pay a some $3000’s extra).

If you’re looking for something simulink-like, you could try SciLab
(www.scilab.org), it has SciCos and Xcos. It would be interesting to
introduce USRP into these blocksets. Maybe easy with a function wrapper.
SciLab also has a GUI. I like SciLab, but I prefer Octave because of
it’s
better Matlab-compatibility. The GUI is not very important for me.

Moeller