[amsat-bb] Jack Audio w/FoxTelem

Roy Dean royldean at gmail.com
Sun Nov 12 21:12:18 UTC 2017


Thanks for the advice.   This seems to be working a little bit better, but
I still have no clue how to define the inputs and the outputs via
pavucontrol.   Everything I do that results in audio actually getting to
FoxTelem turns out to be through the laptops internal microphone.   I can
verify this by clapping and seeing the display in FoxTelem change.   What
are the settings in pavucontrol that needed to be made?   Currently I have
the following:

GQRX (audio output on)
Java  (audio stream on)

ALSA plug-in [java]:  ALSA Capture from [built-in blah blah blah] (whole
bunch of options here, including the sink/source)

Output Devices:
Built In Audio Analog Stereo (port speakers)
Uplink Sink loop_sink on Built-in Audio Analog Stereo

Input Devices:
Internal Microphone
Virtual Source loop_source on Built-in Audio Analog Stereo

Profile Analog Stereo Duplex (whole bunch of options here)

Thanks in advance....


On Sun, Nov 12, 2017 at 12:59 PM, Paul Stoetzer <n8hm at arrl.net> wrote:

> You don't need Jack. You can just use PulseAudio with it's virtual
> sink and virtual source.
> The following command should work:
> pacmd load-module module-virtual-source source_name=loop_source
> uplink_sink=loop_sink
> Then you can use pavucontrol to send the audio to loop_sink from Gqrx
> and use loop_source in FoxTelem.
> 73,
> Paul, N8HM
> On Sun, Nov 12, 2017 at 12:47 PM, Roy Dean <royldean at gmail.com> wrote:
> > I know I'm beating a dead horse, but has anybody here had recent success
> > using jack audio (ubuntu/linux) with FoxTelem?
> >
> > I'm trying to pipe audio into FoxTelem with Jack, and I'm simply not
> doing
> > something correctly.   First and most importantly, whatever I am using to
> > generate audio (GQRX or rtl_fm from a terminal prompt) completely freezes
> > as soon as I start the jack server (before I even "connect" the input and
> > output), but resumes as soon as I stop the jack server.   Not sure if
> this
> > will ever work if jack stalls the software generating the audio.
> >
> > Hoping to get something up and running by the Fox launch, but now I am
> > reminded as to why I gave up on this a few months ago.
> >
> > Any tips before I throw in the towel (again)?
> >
> > --Roy
> > K3RLD
> > _______________________________________________
> > Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> > to all interested persons worldwide without requiring membership.
> Opinions expressed
> > are solely those of the author, and do not reflect the official views of
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list