Re: Audio sink to "wire"

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.mueller@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, vittben@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 Jakub Serych@panska.cz    To: "discuss-gnuradio@gnu.org" discuss-gnuradio@gnu.org    Subject: Audio sink to "wire"  Message-ID:  PAXP189MB167934066ABE5023CEF7E155DDF12@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