[Hackrf-dev] FM Modulating external MPX Signal

[Mitja kocjančič]

Or I could somehow put Audio that comes from Jack into Linux Standart Pipe
and then feed this into GNU Radio
(something like this:
https://github.com/veso266/MPX-Signal-Modulator/blob/master/MPXGenerator.grc)
but it doesn't work

2015-09-04 23:03 GMT+02:00 Chris Kuethe <chris.kuethe at gmail.com>:

> I'll try do up an example later tonight. I have limited Internet right
> now.
>
> For now, I suggest looking for some example flowgraphs of fm stereo
> receivers with rds. That should give you an idea of how to separate the
> subcarriers the main audio, and from there you can work backwards to
> compose a channel with subcarrier...
> On Sep 4, 2015 14:23, "Mitja kocjančič" <veso266 at gmail.com> wrote:
>
>> Hi anyone know How I can FM Modulate External MPX SIgnal?
>>
>> I am using MPY Signal Generator called Stereo Tool:
>> http://www.stereotool.com/
>>
>> the program uses two Jack Audio Cables (left and right) and it outputs
>> 192khz MPX Generated Audio over it. and there where problem starts I know
>> that I need 288k sample rate and WBFM Block needs 288k Quadrature rate and
>> 192 Audio rate but I don't know how to link GNU Radoi with jack
>> Is there any JackAudio to Linux standart Pipe sender or anything like
>> that So I can feed MPX Data from Stereo Tool to it?
>>
>> PS: How would GNU Radio flowgraph look like (I would probably need some
>> Rational Resampler or something like that.
>>
>> I know there is gr-rds Block Package but I would like to use Stereo Tool
>> for RDS because It has even RT+ and it can read RT details from external
>> file
>>
>>
>>
>> Thanks for Anwsering and Best Regards
>>
>> _______________________________________________
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>>
>>
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