Re: [Discuss-gnuradio] Digital Radio Mundial

[Brett L Trotter]

Eric Blossom wrote:
> On Thu, Apr 27, 2006 at 06:12:58AM -0500, Brett L Trotter wrote:
> 
>>I've been tearing apart and fixing up the DReaM sources in order to
>>reduce it to its core. I've made patches to allow use of FFTW3 instead
>>of FFTW2 and to fix the problems compiling without the QT GUI interface.
> 
> 
> That's great!  Thanks for splitting it up.
> 
> 
>>So I'm at the point where I know how to instantiate a DRM Receiver
>>object and am close to understanding both how to pass in I/Q values and
>>how to dump out audio data to a sound card.
>>
>>What do I need to know in terms of taking that C++ code and making a
>>Python GNURadio/USRP module that can use the DRM library?
> 
> 
> If you can get the interface boiled down to a function call or class
> method or some such, that accepts a block of I/Q values and produces a
> block of audio samples, it's no problem.
> 
> Let me know when you get there and I'll assist with getting it glued
> into a GNU Radio block.
> 
> Eric


I believe I am there already. It seems that all one must do is
instantiate a DRMReceiver object, take I/Q values one at a time and run
through HilbertFilt(r, i) then fill a vector called pvecOutputData with
the results, in increments of the block size, loop through and flip
spectrum if dsired, then do vecrInpData.AddEnd(pvecOutputData) and a
function to update the audio level meter (need to determine if this is
feedback used in some way, or can be neglected as it is GUI only)

So what's next?