[hpsdr] Resampler

[ad0es]

Hi,

The Athena/DFC code pretty much does that now.
Athena sends complexFloatIQ samples to Aether, which sends them to all 
the running Hemeras.
Hemera converts to PCM samples, BUT doesn't send them to the sound 
stack.  It instead sends the PCM samples
directly to flRadio (modified fldigi) via a tcp socket.  I wrote a 
"sdrsound driver" for fldigi that gets its PCM sound samples
from the socket instead of the sound stack.  This both improved latency 
and quality of the decodes.

The final step would be to make fldigi understand IQ data directly, but 
I suspect that would be a major project.

On 06/18/2017 10:51 AM, Warren C. Pratt wrote:
> Yes, it would be nice to have that.  It would require developing some 
> kind of standard for the UDP interchange and getting the digital mode 
> applications on board along with our console applications.  I like the 
> idea; for me at least, time is a little lacking for now.
>
> 73,
>
> Warren  NR0V
>
>
> On 6/11/2017 6:14 AM, john clark wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>> Warren,
>>
>> Good news about your plan for Resampler.
>> Could you look into a total bypass of VAC and have a direct exchange 
>> with some common
>> digital modes? Contacting Joe Taylor, K1JT or Bill Somervill, G4WJS 
>> over in the WSJTgroup at yahoogroups.com may lead to an easy UDP 
>> exchange of the direct IQ values. This could be a big help when we 
>> start running multiple receivers.
>>
>>
>

-- 
Steve AD0ES

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