[Hackrf-dev] FM Modulating external MPX Signal

[Chris Kuethe]

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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