Hey Henning,
huh! Doesn't putting the same sink name into the upstream GNU Radio audio source do the
same? Asking for a friend who's collecting bugs on the gr-audio blocks [1]…
Best regards,
Marcus
[1] https://github.com/gnuradio/gnuradio/issues/2539#issuecomment-2078130433
On 06.06.24 22:08, Henning Paul wrote:
Hi,
Am 06.06.24 um 14:38 schrieb Marcus Müller:
Indeed, and that's why Henning Paul has his own CAT/hamlib proxy for interfacing with
WSJT-X to emulate his own hardware frontend, see [1] slide 22. Luckily, I don't think
you'll have to go that far, usually. Depends, really, on what you want to control from
WSJT-X; you'd choose CAT as transceiver/rig type, probably.
James Ahlstrom has a skeleton for a script on his page that I used:
http://james.ahlstrom.name/hamlib.html
As a side note, I decided to write native PulseAudio source and sink blocks for GNU
Radio in order to be able to directly select virtual sources or sinks without having to
redirect audio streams with pavucontrol: https://github.com/hennichodernich/gr-hnch
regards,
Henning
However, I'm not deeply into these ham radio applications. If there's demand to talk
about ham affairs like plugging WSJT-X to GNU Radio (and maybe ask whether someone can
talk about their experiences doing something specific), I do recommend heading over to
our Matrix chat room for GNU Radio in amateur radio,
#HamRadio:gnuradio.org
you can easily access that, if you've never used Matrix before, using, for example,
[2]. Note that there's a lot of knowledge out there – and a lot of implementations that
not everyone knows about. For example, I think someone has implemented FT-8 in GNU
Radio (can't find the link right now). And: there's a series of talk recordings,
organized by Barry Duggan himself, which I find worth watching [3].
Best,
Marcus
[1] https://github.com/hennichodernich/talks/blob/main/SDR_Selbstbau.pdf
[2] https://app.element.io/#/room/#HamRadio:gnuradio.org (account necessary for writing
messages, you can sign up for free there, or anywhere else on the matrix network; do
join [2a] while you're there)
[2a] https://app.element.io/#/room/#gnuradio-space:gnuradio.org
[3] https://wiki.gnuradio.org/index.php/Talk:HamRadio
On 05.06.24 23:21, Kevin McQuiggin wrote:
Hi Jakub and Marcus:
On the Mac, use the BlackHole virtual audio driver. It’s at
https://github.com/ExistentialAudio/BlackHole. You can create a virtual audio device
and point WSJT-X at it for input, output, or both. It works well and the developer is
responsive to questions and suggestions.
Kevin
On Jun 5, 2024, at 1:12 PM, Marcus Müller <marcus.muel...@ettus.com> wrote:
Uff, please don't recommend such stunts :) This can be solved easily in software at
zero cost.
If you're on a modern Linux, you use the pipewire audio system. Install `qpwgraph`,
start WSJT-X and just use qwpgraph to connect the output of your GNU Radio flow graph
to the input of your WSJT-X. (or vice versa, really!)
If you're using an older Linux distribution, you might still be using pulseaudio. No
problem, you just 1. create a "black hole" audio sink, then 2. form a virtual
microphone input from that:
1. |pactl load-module module-null-sink sink_name=cable_out
sink_properties=device.description=cable_out|
2. |pactl load-module module-remap-source master=cable_out.monitor
source_name=cable_in source_properties=device.description=cable_in|
You'd then use `cable_out` as device name in your GNU Radio Audio sink. That's
it.
On Windows, I'm no expert, but there's many loopback ways. there's VB-Cable, which
used to be a thing when I used WIndows the last time.
No expertise on Mac OS, but if something is Mac OS's thing, it's multimedia routing,
so that should work. In no case should you spend money on an external sound card, and
live with the quality loss of that!
Best regards,
Marcus
On 05.06.24 14:27, vitt...@pm.me wrote:
Hi Jakub and group!
IMO the simplest way to "redirect" audio sink, and that's the solution I usually use, use
another USB sound card for WSJT-X with an "audio splitter" and “physical crossed cable”.
The audio splitter is only necessary if you want to monitor the audio.
No need for complicated settings, virtual audio cable, etc. etc...... fast and
dirty!!!
Enjoy
Vittorio, I3VFJ
Message: 5
Date: Tue, 28 May 2024 06:58:18 +0000
From: Šerých jakubser...@panska.cz
To:"discuss-gnuradio@gnu.org" discuss-gnuradio@gnu.org
Subject: Audio sink to "wire"
Message-ID:
paxp189mb167934066abe5023cef7e155dd...@paxp189mb1679.eurp189.prod.outlook.com
Content-Type: text/plain; charset="iso-8859-2"
Hi,
is there any simple way to redirect GNU radio Audio sink output to "wire" so
that it can be processed by some other software (e.g. WSJT-X)?
Thanks for any info
Jakub
