Re: FM stereo receiver distortion

[Ron Economos]

Is the .grc file available anywhere?

Ron

On 6/19/20 17:29, Barry Duggan wrote:
> Hi James and others,
>
> Success! Using the code from 
> https://github.com/gnuradio/gnuradio/blob/master/gr-analog/python/analog/wfm_rcv_fmdet.py 
> with several modifications, I built a FM stereo receiver using only 
> basic blocks. See the revised 
> https://wiki.gnuradio.org/index.php/File:USRP_FM_stereo_fg.png
>
> Thank you for everyone's help / suggestions.
> ---
> Barry Duggan KV4FV
>
>
> On 2020-06-17 01:11, James Hayek wrote:
> > Evening Barry, I'll put this on my to do list tomorrow morning for the
> > Pluto.
> >
> > On Tue, Jun 16, 2020 at 8:45 PM Barry Duggan <barry@dcsmail.net> wrote:
> >
> > > Hi,
> > >
> > > I have a broadcast FM (mono) receiver which works well, with good audio
> > > and clean traces in the Time Domain. See
> > > https://wiki.gnuradio.org/index.php/File:USRP_FM_fg.png
> > >
> > > Then I made a stereo version. See
> > > https://wiki.gnuradio.org/index.php/File:USRP_FM_stereo_fg.png  Using
> > > it, the sound has a distortion but does not have any audio underruns.
> > > The traces in the Time Domain have a lot of "fuzz" (noise?).
> > >
> > > Do I need a filter? If so, would it come before or after the WBFM
> > > Receive PLL block?
> > >
> > > Once I have a good design, I will use it as an Example Flowgraph.
> > >
> > > Thanks for your help.
> > > --
> > > Barry Duggan KV4FV
> >
> > --
> > Thanks,
> > James G Hayek
> > Youtube.com/JamesHayek