Octave seems to be the popular tool for these problems.

https://www.gnu.org/software/octave/

David Rowe, VK5DGR, has been using this for his digital voice development work.

http://www.rowetel.com/blog/?page_id=452

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Dec 17, 2015, at 8:33 AM, Per-Tore Aasestrand <[email protected]> wrote:
> 
> Interesting!
> 
> Will Mathematica be able to handle the data-stream in real-time?
> 
> 73
> 
> P-T / LA7NO
> 
> 
> On 17 December 2015 at 17:29, Phil Hystad <[email protected]> wrote:
> 
>> I thought of doing something with Python and SDR I/Q processing but never
>> got around
>> to doing anything.  But, I decided it would be far easier to use
>> Mathematica (for what I
>> want do to) rather than Python even though I would probably have to cobble
>> together an
>> interface to pull out the I/Q data stream and feed to Mathematica (unless
>> someone has
>> already done this).
>> 
>> 73, phil, K7PEH
>> 
>> 
>>> On Dec 17, 2015, at 8:12 AM, a45wg <[email protected]> wrote:
>>> 
>>> Hi,
>>>   Is anyone doing any SDR I/Q processing using Python with the KX3 ?
>>> 
>>>   I am trying to get some traction with this - but finding little info
>> in terms of Elecraft - plenty in the rtl-sdr however
>>> 
>>>   Thanks for the valuable info contained here
>>> 
>>>     Tim - A45WG
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