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eHam Forums => Computers And Software => Topic started by: VA2PBJ on June 04, 2013, 06:52:27 PM



Title: SDR Software as a Front end
Post by: VA2PBJ on June 04, 2013, 06:52:27 PM
Is it possible to run the SDR software as a front end (just sound processing) to a regular radio?

I would like to be able to compress/clip/filter my audio by the computer and send it up, as well as using some dsp audio scrubbing for listening.

Anything out there already?


Title: RE: SDR Software as a Front end
Post by: K5TED on June 12, 2013, 03:55:27 PM
IF you want a project, there is this:

http://users.skynet.be/myspace/mdsr/

You do have to do some minimal electronics work, and spend a few bucks. The result will be that you can use a "SDR" type DSP to give you the brickwall filtering, NR, etc. It's really pretty easy to implement. Here's the Yahoo group http://groups.yahoo.com/group/mdsradio/

If you are just looking for some audio DSP software, the good old DSP-Filter software by JE3HHT is pretty good. It's very utilitarian.
 There is another one that is interesting, and more elegant, called BR-universal-Filt http://www.dsp4swls.de/dsp/br_uni_filteng.html
It has a fairly steep learning curve.

Then, of course, there's always VA3AGM's DSP Filter http://www.qsl.net/va3agm/index1.htm

And for your microphone, try http://www.dxatlas.com/VShaper/

I have played with all of the above. All require some adeptness at tweaking your soundcard configs.