Locked Re: WebSDR for wsjtx... #GeneralGroupInfo


Bill Somerville
 

Amos,

VAC (Virtual Audio Cable) is a product that allows applications that send and receive audio data to and from physical audio devices to another application instead. The digital equivalent of a second sound card with a looped back audio connection from the first sound card. This is nothing whatsoever to do with CAT control of a rig which is normally done over a serial port. The screen capture I included was from the WSJT-X "Settings->Audio" panel, where audio connections are configured.

73
Bill
G4WJS.

On 08/01/2021 15:03, Amos Sobel 4X4MF wrote:

Bill

 

I am not familiar with the snip you have given below. I expect WSJT-X to accept a VAC as a rig name in it’s  Radio setting as below:

 

73’s

Amos 4X4MF

 

 

From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of Bill Somerville
Sent: Friday, January 8, 2021 4:47 PM
To: main@WSJTX.groups.io
Subject: Re: [WSJTX] WebSDR for wsjtx... #GeneralGroupInfo

 

Hi Amos,

 

both VB Cable and VAC work with MS Windows, I use both daily.

 

 

73
Bill
G4WJS.

 

On 08/01/2021 14:42, Amos Sobel 4X4MF wrote:

Bill

 

I did install VAC 4.64 lite and later VB Cable. None  of which did show up in the rig list of WSJT-X v2.2.2. Which Virtual Audio Cable is compatible with WSJT-X or how do you bypass this problem?

 

73’s

 

Amos 4X4MF

 

From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of Bill Somerville
Sent: Friday, January 8, 2021 3:58 PM
To: main@WSJTX.groups.io
Subject: Re: [WSJTX] WebSDR for wsjtx... #GeneralGroupInfo

 

Hi Jim,

 

where sound card drivers provide a "Stereo Mix" device it can be used but is very limited since all audio sources are mixed together, you cannot easily choose what is looped back to what.

 

On Windows VB Cable is a free option if you only need one loopback. On Linux pulseaudio can easily be configured with a null-sink device and monitors to build loop back devices. On macOS I'm not sure there is currently a free option without limitations but some cheap tools are available.

 

One issue with using webSDR receivers is that web browsers tend to only send audio to the system default audio device, that means that system sounds will have to be disabled otherwise they will be fed through the loopback, and of course will not be audible without the accompanying webSDR audio stream.

 

Another issue is that most webSDRs when listened via a browser will have latency in the audio stream that approaches the point where decoders like the WSJT-X FT8 and FT4 ones are sub-optimal.

 

73
Bill
G4WJS.

 

On 08/01/2021 13:49, Jim Shorney wrote:

There is often a "stereo mix" device available in the hardware. Windows usually disables and hides it by default. Has anyone tried this?
 
https://thegeekpage.com/stereo-mix/
 
Disclaimer: I don't use radio applications in Windows. Please don't yell at me if it doesn't work. :)
 
73
 
-Jim
NU0C
 
 
On Fri, 8 Jan 2021 12:38:03 +0000
"Alan G4ZFQ" <alan4alan@...> wrote:
 
 >Locating the
proper virtual audio cable is difficult.
  
Amos,
 
Various ways here. 
https://sites.google.com/site/g4zfqradio/connecting-soundcard-sdr-to-computer/pipe_sound_between_sdr_and_decoder 
VB Cable is free and should work.
 
73 Alan G4ZFQ


Join {main@WSJTX.groups.io to automatically receive all group messages.